All C# Extension Methods
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OrderBy(string sortExpression)
Orders a list based on a sortexpression. Useful in object databinding scenarios where the objectdatasource generates a dynamic sortexpression (example: "Name desc") that specifies the property of the object sort on.
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WhereIf
When building a LINQ query, you may need to involve optional filtering criteria. Avoids if statements when building predicates & lambdas for a query. Useful when you don't know at compile time whether a filter should apply. Borrowed from Andrew Robinson. http://bit.ly/1V36G9
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String Extensions
String extensions, download CoreSystem Library from codeplex; http://coresystem.codeplex.com
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ToDictionary() - for enumerations of groupings
Converts an IEnumerable<IGrouping<TKey,TValue>> to a Dictionary<TKey,List<TValue>> so that you can easily convert the results of a GroupBy clause to a Dictionary of Groupings. The out-of-the-box ToDictionary() LINQ extension methods require a key and element extractor which are largely redundant when being applied to an enumeration of groupings, so this is a short-cut.
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DataReader to CSV
Export DataReader to CSV (List<String>). Basic example that to export data to csv from a datareader. Handle value if it contains the separator and/or double quotes but can be easily be expended to include culture (date, etc...) , max errors, and more.
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Pivot
Groups the elements of a sequence according to a specified firstKey selector function and rotates the unique values from the secondKey selector function into multiple values in the output, and performs aggregations.
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FormatWithMask
Formats a string with the specified mask
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ForEach
Shortcut for foreach and create new list
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AddRange<T>()
I have created this AddRange<T>() method on ObservableCollection<T> because the LINQ Concat() method didn't trigger the CollectionChanged event. This method does.
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ToPagedList
Paging extension method for NHibernate 3.0 and its new query API QueryOver.
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Encrypt & Decrypt
Encrypt and decrypt a string using the RSACryptoServiceProvider.
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GetCurrentDataRow
The System.Windows.Forms.BindingSource has a property to return the current row as DataRowView object. But most of the time we need this as DataRow to manipulate the data. This extension method checks the Current property of BindingSource for nullity, returns null if it is null and returns the current Row as DataRow object if the Current property is not null.
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Enum<T>.Parse() and Enum<T>.TryParse()
Parses the specified string value into the Enum type passed. Also contains a bool to determine whether or not the case should be ignored.
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ToDataTable
Converts an IEnumerable to DataTable (supports nullable types) adapted from http://www.c-sharpcorner.com/UploadFile/VIMAL.LAKHERA/LINQResultsetToDatatable06242008042629AM/LINQResultsetToDatatable.aspx
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ToJson() and FromJson<T>()
Convert an object to JSON an back
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ToObservableCollection<T>()
Convert a IEnumerable<T> to a ObservableCollection<T> and can be used in XAML (Silverlight and WPF) projects
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Generic Enum to List<T> converter
http://devlicio.us/blogs/joe_niland/archive/2006/10/10/Generic-Enum-to-List_3C00_T_3E00_-converter.aspx
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IList<T> to Excel file
An extension method that produce a excel file of List<T>. This would be useful if you want to automatically generate a Excel out of any other primative data type collection I provided 1 overloads of this method, that accepts a Path as string to save excel file to location on disk.
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IsNumeric
Checks if a string value is numeric according to you system culture.
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UcFirst
Emulation of PHPs ucfirst()
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DataTable to CSV export
Export datatable to CSV file
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Clone<T>()
Makes a copy from the object.
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SafeInvoke
Properly invokes an action if it is required. Best way to handle events and threaded operations on a form.
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Strip Html
Removes any HTML or XML tags from a string. Super simple, but I didn't see anything here like it. I've created similar methods in the past to take into account things like <script> blocks, but I'm not worrying about that here.
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ComputeHash
Computes the hash of a string using one of the following algorithms: HMAC, HMACMD5, HMACSHA1, HMACSHA256, HMACSHA384, HMACSHA512,MACTripleDES, MD5, RIPEMD160, SHA1, SHA256, SHA384, SHA512.
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ToSecureString
Converts a string into a "SecureString"
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IfNotNull<T, TResult>
if the object this method is called on is not null, runs the given function and returns the value. if the object is null, returns default(TResult).
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Randomize
OrderBy() is nice when you want a consistent & predictable ordering. This method is NOT THAT! Randomize() - Use this extension method when you want a different or random order every time! Useful when ordering a list of things for display to give each a fair chance of landing at the top or bottom on each hit. {customers, support techs, or even use as a randomizer for your lottery ;) }
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DateRange
A simple date range
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IsDate
Wraps DateTime.TryParse() and all the other kinds of code you need to determine if a given string holds a value that can be converted into a DateTime object.
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Dump
Dumps the object as a json string. Can be used for logging object contents.
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ForEach
Shortcut for foreach
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IsNotNullOrEmpty
It returns false if given collection is null or empty otherwise it returns true.
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ToCamelCase
Convert a String into CamelCase
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SetSocketKeepAliveValues
Using IOControl code to configue socket KeepAliveValues for line disconnection detection(because default is toooo slow)
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IEnumerable.Chunk
Splits an enumerable into chunks of a specified size.
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IsNull
check value is null
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Deserialize<T>
Deserialize an XDocument to a generic type
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IsValidEmailAddress
Check wheter a string is an valid e-mail address
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Force Download any file!
Forces your browser to download any kind of file instead of trying to open it inside the browser (e.g. pictures, pdf, mp3). Works in Chrome, Opera, Firefox and IE 7 & 8!
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Truncate
Truncate the specified string based on the given length. Replaces the truncated data to "..."
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ToCollection<T>()
Convert a IEnumerable<T> to a Collection<T>
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Transpose
transposes the rows and columns of its argument
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DeepClone
It returns deep copy of the object.
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ToCSV
An extension method that produce a comman separated values of string out of an IEnumerable<T>. This would be useful if you want to automatically generate a CSV out of integer, string, or any other primative data type collection or array. I provided 2 overloads of this method. One of them accepts a separator and the other uses comma "," as default separator. Also I am using another shortcut extension method for foreach loop.
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Get MaxLength attribute from property of an class
Method returns the max length specificed for property
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Distinct
Provides a Distinct method that takes a key selector lambda as parameter. The .net framework only provides a Distinct method that takes an instance of an implementation of IEqualityComparer<T> where the standard parameterless Distinct that uses the default equality comparer doesn't suffice.
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Parse<T>
Parse a string to any other type including nullable types.
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IsValidEmail
Validate Email ID in C#
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Intersects
Returns true if two date ranges intersect.
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IsWeekend
Lets you easily figure out ifdateTime holds a date value that is a weekend.
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HttpUtility Helpers
Make easily accessible some functions available in HttpUtility into an Extension.
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Left
Returns the first few characters of the string with a length specified by the given parameter. If the string's length is less than the given length the complete string is returned. If length is zero or less an empty string is returned
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Age
Get the actual age of a person
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IndexOf<T>()
Returns the index of the first occurrence in a sequence by using the default equality comparer or a specified one.
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Shuffle
Shuffles an IEnumerable list
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Load & Save configuration
Two methods that extends DataGridView control to save and load columns configuration to specified XML file. More informations (in Polish, example in English) at: http://kozub.net.pl/2012/02/22/datagridview-konfiguracja-kolumn-oraz-zapis-i-odczyt-stanu/ http://kozub.net.pl/2012/03/21/c-extension-methods/
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Slice<T>(int start, int end)
Returns the range of elements between the specified start and end indexes. Negative numbers count from the end, rather than the start, of the sequence. Values of 'end' larger than the actual sequence are truncated and do not cause index-out-of-bounds exceptions. Functionally very similar to Python's list[x:y] slices.
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OrderBy
OrderBy is nice, except if you want to sort by multiple properties or want an easy way to distinguish between ascending and descending.
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Simplify usage of XmlSerializer
Extension for simplify usage of XmlSerializer class. Add extension to any object serialize it to xml. Add extension to string and stream to deserialize objects. All extensions with first check about default constructor
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ToList<T>(Func<object, T> func)
Converts an array of any type to List<T> passing a mapping delegate Func<object, T> that returns type T. If T is null, it will not be added to the collection. If the array is null, then a new instance of List<T>() is returned.
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ToHashSet<T>
Takes any IEnumerable<T> and converts it to a HashSet<T>
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IsNullOrEmpty
Determines whether a collection is null or has no elements without having to enumerate the entire collection to get a count.
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SetCookie(), GetCookie(), DeleteCookie()
Extension methods on HtmlDocument used to read, write and delete cookies in Silverlight applications.
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List To DataTable
List To Datatable
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IsPrime
Returns true when a integer is a prime.
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ContainsAny
Checks if a given string contains any of the characters in the passed array of characters.
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ToLogString
Creates a string for logging purposes from an Exception. Includes the InnerException(s), Stacktrace et cetera.
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Each<T>
iterates through an IEnumerable<T> and applies an Action
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Between
c# version of "Between" clause of sql query
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Storyboard.BeginAsync()
Begin an XAML Storyboard using the async/await pattern instead of using the completed event.
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IsGuid
Checks to see if a string represents a valid GUID. Source of the function: Original code at https://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=94072&wa=wsignin1.0#tabs
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IsBetween
Checks if the date is between the two provided dates
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DateTimeFormat
This is extension method for format the data time into the string with pattern specific and current culture. For more information please read at my blog http://weblogs.asp.net/thangchung/archive/2010/11/01/datetime-formating-extension-method.aspx
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IsSubclassOfRawGeneric
Is essentially a modified version of Type.IsSubClassOf that supports checking whether a class derives from a generic base-class without specifying the type parameters. For instance, it supports typeof(List<>) to see if a class derives from the List<T> class. The actual code was borrowed from http://stackoverflow.com/questions/457676/c-reflection-check-if-a-class-is-derived-from-a-generic-class.
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ToPersianNumber
Converts English Numbers to Persian Numbers
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DrawAndFillRoundedRectangle
Draw and fill a rectangle with some (or all) the angles rounded.
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ToJson
Json Conversion, uses DataContractJsonSerializer to deserialize item
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Cache()
Caches the results of an IEnumerable.
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ToException
Turns any object to Exception. Very useful!
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AddWorkdays
A modification to the AddDay function that adds an integer number of weekdays to a date, starting the count at the first weekday after the current day. This is a typical method for calculating B2B service delivery and billing due dates.
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ToProperCase
Converts string to a title case.
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GetAttribute
Gets the first assembly attribute of the specified type from the assembly it is called from.
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DefaultIfEmpty
returns default value if string is null or empty or white spaces string
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IsIsin
Determines if a string is a valid ISIN (International Securities Identification Number) code.
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ToString
Concatenates a specified separator String between each element of a specified enumeration, yielding a single concatenated string.
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Log SharePoint Exception via SPDiagnosticsService
Log SharePoint Exception via SPDiagnosticsService for Debugging (result : 0000 Unexpected My Method Name : Attempted to divide by zero. 220da18b-1517-4230-90ac-91117ceaea33 )
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IsValidNIP, IsValidREGON, IsValidPESEL
Validation algorithms for Polish identification numbers NIP, REGON & PESEL.
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Move FileInfo and automatically rename it
Moves a FileInfo instance to a specified path and rename it when already existing.
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EnumToDictionary
Converts an Enumeration type into a dictionary of its names and values.
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IsString
Checks whether the type is string.
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QueryAsync
Returns a Task<IEnumerable<TResult>> to be used with the new async / await keyword.
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ToXML
Serializes an object to XML
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IsValidUrl
Returns true when a string is a valid url
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CreateDirectory
Recursively create directory based on the given path. If the given path doesn't exist, it will create until all the folders in the path are satisfied.
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IfNotNull
Returns a selected value when the source is not null; null otherwise.
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GetLastDayOfMonth
Gets the last date of the month of the DateTime.
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IsNullable
Returns true if the type it is called upon is a System.Nullable<> wrapped type.
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Equals
Equals method that lets you specify on what property or field value you want to compare an object on. Also compares the object types. Useful to use in an overridden Equals method of an object.
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GetPropertyValue
Gets the value of a property in a object through relection
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Combinations
Returns all combinations of a chosen amount of selected elements in the sequence.
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SerializeToXml
Serializes objects to an xml string. (Does not provide error handling if the object is not serializable.)
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ChangeType
Converts any type to another.
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Filter
Allows you to filter an IEnumerable<T>
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Memoize<T, TResult>
Memoize afunction
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ToPlural
Returns the plural form of the specified word.
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GetAttribute
Makes it easier to retrieve custom attributes of a given type from a reflected type.
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ToUnixTimestamp
Converts a System.DateTime object to Unix timestamp.
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toSlug
Generate slugs for friendly urls.
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ConvertToByteArray
Convert a Stream to an array of bytes.
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IsNotNullOrEmpty
Returns true when a given string is not null or empty
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ToXml
Converts entire DataTabel To XDocument
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Round to Nearest TimeSpan
Rounds a TimeSpan value to the nearest timespan given
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ConvertTo<T>
Converts an Array of arbitrary type to an array of type T. If a suitable converter cannot be found to do the conversion, a NotSupportedException is thrown.
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AppendLineFormat
Appends a formatted string and the default line terminator to to this StringBuilder instance.
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IsNull
Unified advanced generic check for: DbNull.Value, INullable.IsNull, !Nullable<>.HasValue, null reference. Omits boxing for value types.
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Linkify
Takes a string of text and replaces text matching a link pattern to a hyperlink
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TryParse
This method takes away the need for writing two lines for TryParse and gives users an option of returning a default number.
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CreateExcel
Transforms a DataTable in Excel (xls). Requires Excel Library (https://code.google.com/p/excellibrary/)
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Contains
Provides an overload to String.Contains to specify a StringComparison (i.e. allows for case-insensitive searches).
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DateDiff
DateDiff in SQL style. The following DateParts are implemented: - "year" (abbr. "yy", "yyyy") - "quarter" (abbr. "qq", "q") - "month" (abbr. "mm", "m") - "day" (abbr. "dd", "d") - "week" (abbr. "wk", "ww") - "hour" (abbr. "hh") - "minute" (abbr. "mi", "n") - "second" (abbr. "ss", "s") - "millisecond" (abbr. "ms")
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IsBoolean
Checks whether the type is Boolean.
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Aggregate
Since System.Linq.Enumerable.Aggregate throws a System.InvalidOperationException in case the given list is empty you can't use this function in a complex linq expression. This aggregate version simply returns a defaultvalue if the list is empty
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In
C# version of In clause of sql query.
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GetValueOrDefault<T> for DbDataReader
Helper method to retrieve a nullable value of a column from a datareader.
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Split
somtimes one needs to split a larger collection into multiple smaller ones, this one does so use deferred execution
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ToDateTime
Gets a nullable DateTime object from a string input. Good for grabbing datetimes from user inputs, like textboxes and querystrings.
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Replace
This extension method replaces an item in a collection that implements the ilist<t> interface
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GetDisplayName()
Converts the pascal-cased Name property of a type to a displayable name.
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Standard Deviation LINQ extension method
Typical standard deviation formula set in LINQ fluent syntax. For when Average, Min, and Max just aren't enough information.
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IsValidIPAddress
Validates whether a string is a valid IPv4 address.
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Mask
A set of extension methods that make it easy to mask a string (to protect account numbers or other personal data). For example, you could mask a SSN of 123456789 to be ******789.
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IsSet
I did not write this I just found it very useful, check http://stackoverflow.com/questions/7244 for original post.
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ToEnumerable()
Convert an IEnumerator<T> to IEnumerable<T>.
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FirstDayOfMonth / LastDayOfMonth
Simple way to Get the first and last day of the specified date.
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GetBoolean(string fieldName), GetDateTime(string fieldName), etc...
Use the Get[Type] functions that are part of the IDataReader but by passing the field name as a string as opposed to the field ordinal as int. Allows assigning default values for null values returned by the datareader.
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StringBuilder AppendIf
Makes it possible to conditionally append to a StringBuilder while keeping it fluent
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ToEnum
Parse a string value to the given Enum
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Clone<T>
Clones a DataRow - including strongly typed DataRows.
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ToInt
It converts string to integer and assigns a default value if the conversion is not a success
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Validate Email
Validate email id
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int.IsNumber()
Checks if an integer is a number
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AsEnumerable
Allows you to treat an IDataReader from a database query as enumerable so that you can perform LINQ operations on it.
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ToNull
Turns any object to null
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TakeUntil
The opposite of TakeWhile, inverts the expression and passes to TakeWhile so that instead of taking while an expression is true, you take until an expression is true.
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IsNumeric
Checks if a string value is numeric
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ToDecimal
Convert string to decimal
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Async
Starts execution of IQueryable on a ThreadPool thread and returns immediately with a "end" method to call once the result is needed.
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Include
Type-safe Include: a completely type-safe way to include nested objects in scenarios with DomainServices and RIA in, for example, Silverlight applications. Example: Include(x=>x.Parent) instead of Include("Parent"). A more detailed explanation can be found at http://www.chrismeijers.com/post/Type-safe-Include-for-RIA-DomainServices.aspx
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Standard Deviation LINQ extension method (with overloads)
Typical standard deviation formula set in LINQ fluent syntax. For when Average, Min, and Max just aren't enough information. Works with int, double, float.
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DefaultIfNull
return default value if string is null
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TimeSpan ToHumanTimeString
Light-weight extension to output time. If you need additional human readable strings
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KB,MB,GB,TB
Simplest way to get a number of bytes at different measures. KB, MB, GB or TB,
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ScaleImage
Scales a Image to make it fit inside of a Height/Width
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SelectRandom
This method selects a random element from an Enumerable with only one pass (O(N) complexity). It contains optimizations for argumens that implement ICollection<T> by using the Count property and the ElementAt LINQ method. The ElementAt LINQ method itself contains optimizations for IList<T>
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Datatable to List
Datatable to List
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IsInRange
Determines if a date is within a given date range
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FindControl<T>
Generic recursive FindControl.
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IsUnicode
IsUnicode
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IsNullOrEmptyOrWhiteSpace
It returns true if string is null or empty or just a white space otherwise it returns false.
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IsIn
Determines if an instance is contained in a sequence. Is the equivalent of Contains, but allows a more fluent reading "if item is in list", specially useful in LINQ extension methods like Where
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TryDispose
Dispose an object if it implement IDisposable. Especially useful when working with interfaces and object factories, and IDisposable may or may not found on concrete class.
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Nl2Br
Convert a NewLine to a Html break
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Right
Returns the last few characters of the string with a length specified by the given parameter. If the string's length is less than the given length the complete string is returned. If length is zero or less an empty string is returned
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FirstOrNull
Returns the null when there's null first element in the sequence instead of throwing an exception
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Enum Name To Display Name
Convert an CamelCase enum name to displayable string
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EqualsAny
Check that the given string is in a list of potential matches. Inspired by StackOverflow answer http://stackoverflow.com/a/20644611/23199
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ReadToEnd
Returns a string with the content of the input stream
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GetValue
A bunch of extensions that work with SearchResult to retrieve its data.
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GetValueOrDefault
Some time you want to get a nested property but a property in the chain is null then to avoid exception of Null Exception you must check all property in chain opposite of null
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Strongly Typed Databinding
This is an extension that I use for doing strongly typed databinding to controls in a winforms project. I dislike using strings to databind because they do not generate compiler errors when the bound object changes. This extension allows you to, instead of using a string, use an expression to bind to for both the control property and the object property.
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TimeSpan Sum
C# LINQ has no Sum method for TimeSpan. Here it is1
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Reverse
Reverses the order of the list that you wish to enumerate.
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Return<TIn, TOut>
A 'fluent' logic extension method that takes a value (can be anything) and a function that returns another value (can be anything) based on its logic. This is useful for both evaluating and optionally returning a value without declaring a temporary variable for the value.
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FirstOrDefault
First or default extension method for NHibernate 3.0 and its new query API QueryOver.
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Strip
Strip a string of the specified substring or set of characters
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Inject object properties into string
Supplements String.Format by letting you get properties from objects
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GetMD5
Gets the MD5 value of a given file.
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Flatten
Flatten an IEnumerable<string>
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Email
Send an email using the supplied string.
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ToEnum
ToEnum - with nullable type
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IsLeapYear
Returns whether or not a DateTime is during a leap year.
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Replace
Case-insensitive replace method
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ToMd5Hash
Convert a input string to a byte array and compute the hash.
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Popup.ShowAsync()
Show an XAMP Popup using the async/await pattern instead of using the completed event.
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ToInteger
Convert datatable field to int32
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DbConnection.ExecuteNonQuery
Execute a SQL command directly on a DbConnection. Needless to say that the other ExecuteXXX methods can be implemented as well. Implementing the method at DbConnection level makes it available for SQLConnection, OleDbConnection, ...
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Session GetValue
A cleaner way to get values from Session
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ContainsAll
Check whether the specified string contains an array of strings for each.
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IsNumeric
Returns true if the type can be considered numeric
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IsEmpty / IsNotEmpty
Checks if any value type is empty.
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IsDefault
Returns true if the object it is called upon is the default of its type. This will be null for referece types, zero for integer types, and a default-initialized struct for structs.
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GetChildren
This is a recursive function to get all child controls under the target control.
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RemoveAll()
ICollection interface has List type most of time, so this Extension allows to call RemoveAll() method with the same signature like on List
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Format String
Shortcut for System.String.Format
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Extend
An extenssion function to work like the extend method of javascript. It takes the object and merge with oder, but only if the property of the other object has value.
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Clone
Allows you to clone an etire generic list of cloneable items.
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ToFriendlyDateString
The idea behind the ToFriendlyDateString() method is representing dates in a user friendly way. For example, when displaying a news article on a webpage, you might want articles that were published one day ago to have their publish dates represented as "yesterday at 12:30 PM". Or if the article was publish today, show the date as "Today, 3:33 PM".
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Enum HasDescription
Multiple ways to check if an enum has description
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IsStrongPassword
Validates whether a string is compliant with a strong password policy.
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Clamp
Limit a value to a certain range. When the value is smaller/bigger than the range, snap it to the range border.
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CSharpCompile
Compiles a string into an assembly. .NET 4
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With and Without
Fake immutability in an existing list class by adding a "With" and "Without" method
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SelectDistinct
"SELECT DISTINCT" over a DataTable. Handles multiple columns selection.
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Elapsed
Get the elapsed time since the input DateTime
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Remove
Removes items from a list based on a condition you provide. I have a feeling this should exist already but I can't find it. You can get the same results using 'where' but this method operates on the collection itself.
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List AddElement
Make adding to list fluent and conditioned
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ToHashTable
Converts a DataRow into a Hashtable.
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JSON to XML
json to xml
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SelectRows
Wraps the usage of some DataTable.DefaultView properties to return sorted rows filtered on a custom filterexpression. For documentation on what to put in the whereExpression and the orderByExpression, refer to the MSDN documentation of DataTable.DefaultView.RowFilter and DataTable.DefaultView.Sort.
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ToShamsiDate
Convert DateTime to ShamsiDateString
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Concat
Adds an element to an IEnumerable (System.Linq.Concat only adds multiple elements)
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ToBytes
Converts a file on a given path to a byte array.
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FindParent
A simple type safe method to find a parent control
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Evaluate/Calculate
This is submitted as two extension methods as they work together. It is based off of an class designed by sfabriz @ http://www.osix.net/modules/article/?id=761 He has another class that does something a little different but I thought this was a wonderful piece of code so encapsulated it here. I only claim authorship of the conversion and not the underlying logic.
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convert Internet dot address to network address
Csharp equivalent of Linux / Unix Command: inet_aton. The inet_aton() extension method converts the specified ipaddress, in the Internet standard dot notation, to a network address.
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IsBoolean()
Tells whether a value can be coalesced into a boolean
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Add<T>
A generic method to add databinding to a control. This method brings type safety for the sake of better code maintainability.
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NotEmpty
Determines if the object is null or empty. string is evaluated with empty. Collections, Arrays and Dictionaries are evaluated for 0 items (items themselves may be null) All other objects are evaluated as null or not null.
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FixPersianChars
متدی برای حل مشکل وارد کردن ي و ك عربی توسط کاربر و تبدیل به ی و ک فارسی. توسط محمد کمائی
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IsInRange
Finds if the int is the specified range
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EndOfTheMonth
Returns datetime corresponding to last day of the month
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Select
It returns reader lines which can be retrieved from lamba statement
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ToPlural
Returns the plural of a word.
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AddCssClass
Adds a css class to the webcontrol. Instead of having to pass one string to the CssClass property, you can add them one by one with the AddCssClass extension method. This can come in handy when a webcontrol has a default class (from the ASP.NET markup) and then needs additional classes based on a condition (like whether or not a user is logged in).
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CSVSplit
Given a line from a CSV-encoded file, split it into fields.
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XML to Json
XML to Json
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ToMemoryStream
Returns a MemoryStream from a Byte array
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GetSHA1Hash
Calculates the SHA1 hash value of a string and returns it as a base64 string.
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Zip
Merges three sequences by using the specified predicate function.
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ToColor
Convert a (A)RGB string to a Silverlight Color object
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ToEnum
Convert a String Value to Corresponding Enum Value
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IsGuid
Validate if a String contains a GUID in groups of 8, 4, 4, 4, and 12 digits with hyphens between the groups. The entire GUID can optionally be enclosed in matching braces or parentheses.
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Raphe
Compare Strings like in SQL
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Modify Querystring
Modify the querystring of the current URL (or a passed in URL) to either add, update or remove parameters.
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ToCsv
Returns a string that represent a csv representation of the referenced T in the IEnumerable<T>. You can also generate a columns header (the first row) with the name of the serialized properties. You can specify the name of the properties to include in the csv file. If you don't specify anything it will includes all the public properties.
-
NextSunday
Get's the date of the upcoming Sunday.
-
FirstIndex() and LastIndex()
Finds the index of the first of last occurence which matches the predicate.
-
ToStringFormat
StringFormat Extension Style
-
Piero Alvarez Fuentes
Converts any type to another.
-
ToString
returns a formatted string on a nullable date
-
First(), Last(), Any()
Helper methods to simplify development. Prevent common LINQ performance mistakes.
-
ToUrlString
takes a string, replacing special characters and spaces with - (one dash per one or many contiguous special charachters or spaces). makes lower-case and trims. good for seo.
-
GetValue
Get column value bu name from IDataReader.
-
ToInt32
Convert string to int32
-
SetAllValues
Sets all values.
-
Dedup
This method will take any DataTable and remove duplicate rows based on any column.
-
AddJavaScript
Dynamically adds a javascript file (.js) to a page even if using master page.
-
ToHtmlTable
Converts an IEnumberable<T> to an HTML DataTable.
-
ToRFC822DateString
Converts a regular DateTime to a RFC822 date string used for RSS feeds
-
ToUIString
Converts a decimal to a string using the current UI culture
-
RemoveDuplicates
Removes items from a collection based on the condition you provide. This is useful if a query gives you some duplicates that you can't seem to get rid of. Some Linq2Sql queries are an example of this. Use this method afterward to strip things you know are in the list multiple times
-
IsInteger
Checks whether the type is integer.
-
EndOfTheDay
Returns datetime corresponding to day end
-
String format
Extention method to string for String.Format
-
LeftOf
Returns the left of a string, terminated by a certain character. If the character isn't found the whole string is returned. Ex: string s = "ab-23"; s.LeftOf(s, '-') returns "ab"
-
SetInputScope
Set the InputScope of TextBox on a Windows 7 Phone.
-
SplitIntoParts
Splits long string into smaller parts with given length.
-
ToUrlSlug
If you get Turkish inputs you can use this method to create url slugs
-
ToNullableString()
Calling Value.ToString on a System.Nullable<T> type where the value is null will result in an "Nullable object must have a value." exception being thrown. This extension method can be used in place of .ToString to prevent this exception from occurring.
-
IsDateTime
Checks whether the type is DateTime.
-
FormatSize
Nicely formatted file size. This method will return file size with bytes, KB, MB and GB in it. You can use this alongside the Extension method named FileSize.
-
Or
Returns the first string with a non-empty non-null value.
-
ColumnExists
Returns true if the column exists in the DataReader, else returns false
-
AddCSS
Dynamically adds a cascading style sheet (a.k.a. CSS) file to a page even if using master page.
-
WordCount
Count all words in a given string. Excludes whitespaces, tabs and line breaks.
-
IsNullOrEmpty
Check whether a collection is null or doesn't contain any elements.
-
Enum.ParseWithDefault
.NET 4.5 version of Enum.ParseUnstrict
-
AddTime
Adds time to existing DateTime
-
Repeat
Repeat a string N times
-
TimeElapsed
Inspiration for this extension method was another DateTime extension that determines difference in current time and a DateTime object. That one returned a string and it is more useful for my applications to have a TimeSpan reference instead. That is what I did with this extension method.
-
IsNullOrDBNull
We all know that objects can be null, but when dealing with databases, a new null type shows up, the DBNull. This extention method detects it along with the null.
-
Contains
a case-insensitive version of String.Contains()
-
DataGridView columns visibility configuration window
This code allows you to change visibility of columns of any DataGridView component at program runtime. It shows simple window filled with list of columns of DataGridView. You can check columns on the list you want to be visible. Use this code with my other DataGridView extension methods http://extensionmethod.net/csharp/datagridview/load-save-configuration.
-
GetValue
Gets the value of a databinded property-path from an object. The property can have the form "Product.Type.Group".
-
HasItems
Determines whether an IEnumerable contains any items
-
ToNameValueCollection
Splits a string into a NameValueCollection, where each "namevalue" is separated by the "OuterSeparator". The parameter "NameValueSeparator" sets the split between Name and Value.
-
ThisWeekMonday
Returns a DateTime representing the Monday of the current week. Depends on System.Globalization
-
ToString
Returns a formatted string on a nullable double
-
GetQueryStringValue
Gets a query string value from a System.Web.UI.UserControl HTTP Request object.
-
IncrementAt<T>
Increment counter at the key passed as argument. Dictionary is <TKey, Int>
-
CopyAsync
Method for copying a folder to a new location
-
ConvertJsonStringToObject
Converts a JSON string to an object
-
None(), OneOf(), Many(), XOf()
Count-based extensions which make checking the length of something more readable. * Updated on 2010-01-16 following suggestion from @Sane regarding the use of Count() in None(). Switched to Any(). Thanks!
-
IsOdd
Checks whether a number is odd
-
IsInDesign
Provides a mechanism to wrap WPF user control code that causes an exception on the host WPF window. Notes: I use a separate DLL for all of my extensions which can cause additional challenges. Here are some tips; There are 3 assemblies required 2 of which are easy to add unless you know there nuances; "System.Windows.Controls" this requires "PresentationCore" & "PresentationFramework". "System.Windows" was the most interesting. Look for WindowsBase.DLL if you don't find a reference. Be sure it matches the .Net Framework version you are using..
-
AddToEnd
Adds an item to a listbox as the last item, and makes sure it is visible.
-
Shuffle
Shuffle an array in O(n) time (fastest possible way in theory and practice!)
-
IndexOf
Gets the index of the give value in a collection. Is overloaded to take a start parameter as well.
-
ContainsAny
Checks if a given string contains any of the string array.
-
SplitTo
Splits a string into an enumerable collection of the specified type containing the substrings in this instance that are delimited by elements of a specified Char array
-
EqualsByContent
Checks if two DataTable objects have the same content.
-
Chooser.ShowAsync()
Show Windows Phone Choosers using the async/await pattern instead of using the completed event.
-
ToNull
Turns any object to null
-
GetScreenSize
Calculates the visual size of a string if it would be displayed on the screen, i.e. as the text of a TextBlock.
-
Chain
Allows chaining together actions to be taken place on the fly. It works with any object. Its a simple concept but I couldn't find any examples that does the same.
-
IDictionary.GetValue
Better way to read a C# Dictionary
-
DeleteFiles
Deletes the files in a certain directory that comply to the searchpattern. The searchpattern can contain * and ? (the normal wildcard characters). The function can also search in the subdirectories.
-
ToStream
Converts a String to a MemoryStream
-
If
Executes a function if a given predicate is true
-
Convert
Converts from one type to another.
-
Call Action / Func
Allows user to call an action / func delegate without having to check for null delegate
-
GetPermutations
GetPermutations
-
RewindAndPlay
When a silverlight MediaElement finishes playing, it does not rewind automatically. This extension method sets the MediaElement position at Zero and starts playing.
-
Pipe
It is like pipe operator in F# and is useful for chaining function calls especially in expressions. (More in http://foop.codeplex.com/)
-
Enum.PaseUnstrict
Permit Enum Parse everytime with valid values using a defaultValue param
-
TimeSpan Average
C# LINQ has no Average method for TimeSpan. Here it is!
-
ElapsedSeconds
Gest the elapsed seconds since the input DateTime
-
Resize
takes a byte[], and ints for width/height. returns a byte[] for the new image. keeps a static copy of previously provided sizes to reduce GC activity.
-
ToDataTable
Used with IDataReader to return a DataTable from the reader.
-
NullDateToString
Prints out a nullable datetime's value (if its not null) in the string format specified as a parameter. A final parameter is specified for what to print if the nullable datetime was, in fact, null.
-
Generates a Hyper Link to redirect user to Authentication form
this method generates a Hyper Link to redirect user to Authentication form . gets Titla attribute of tag and inner Text of Tag and generate tag A . then returns user to referrer page .
-
Object properties to dictionary converter
Takes all public properties of any object and inserts then into a dictionary
-
ToDictionary()
Converts an IEnumerable<IGrouping<TKey,TValue>> from a GroupBy() clause to a Dictionary<TKey, List<TValue>>.
-
ThrowIf
Throw's a given exception is a given predicate is True
-
IsNullOrEmpty
This extension increase the readability of your code.
-
WriteToConsole
Write all elements in the Enumeration to the Console
-
GetMostInner
Gets the most inner (deepest) exception of a given Exception object
-
ToDelimitedString<T>(char delimiter, Func<T, PropertyInfo, string> func)
Map any object T to a delimited string and control how that string is formatted.
-
Fill
Different way to use String.Format
-
Sort algorithms
This is a set of extesion methods that sort a given list more about that on codeplex
-
IsPalindrome
Checks to see if the given text is a valid palindrome or not.
-
IsLeapDay
Checks if the current day is a leap day
-
GetValue
Simply returns the value property from an XmlNode whether it's null or not. Simplifies using XmlDocuments.
-
Strip
Strips unwanted characters on the specified string.
-
Identity
Returns the identity of a value
-
ToBytes
Convert image to byte array
-
ToOracleSqlDate
Converts a Timestamp to a String which can be used in a Oracle SQL Query
-
In
Allows you to compare a value to a list of values analogous to the 'In' statement in sql. This makes for a very friendly syntax that is (IMHO) superior to a list of 'or' clauses. Instead of : if (s=="John" || s=="Peter" or s=="Paul") one can write if (s.In("John","Paul","Peter"))
-
IsNullOrEmpty
Checks if the collection is null or empty
-
CopyTo
Copies a stream to another stream using a passed buffer. it also has an overload to pass a buffer length.
-
ClearControls
clean the controls on a form. Please send suggestions.
-
IndexOfOccurence
Finds the index of the nth occurrence of a string in a string
-
TryGetAttribute
Try/Get pattern for XDocument attributes
-
Thread safe event raising
Allows thread-safely raise any event.
-
ForEach
Foreach inline for the IEnumerable<T>.
-
BeginningOfTheMonth
Returns datetime corresponding to first day of the month
-
GetParentDirectoryPath
On the layers of the directory path of a directory
-
LCM
Uses the Euclidean Algorithm to determine the Least Common Multiplier for an array of integers
-
ItemArrayString
combin datarow's field value to string
-
FileSize
Get the file size of a given filename.
-
Like SQL on C#
An C# extension method based on "LIKE" operator of T-SQL.
-
DefaultIfEmpty
The provided DefaultIfEmpty will only accept an instance of T as the default value. Sometimes you need the default to be an IEnumerable<T>.
-
Fill/Draw RoundedRectangle
C# extension to Fill and or Draw RoundedRectangle
-
IsNull
Essentially the implementation of the sql 'isnull' function, allowing the string type (when null) to be replaced with another value.
-
GetAttributes
Gets an enumeration of assembly attributes of the specified type from the assembly it is called from.
-
SpinThread
Spins up and executes the action within a thread. Basically fire and forget. Real big question here. Does anybody see any issues with thread management? I would like to update this with any code necessary to manage thread cleanup if necessary. I realize that this has the ability to create unsafe thread referencing if not written such that the contents of the action are exclusive to the scope of the action, but that is outside the purview of this extension
-
FindChildByName
Uses the VisualTreeHelper in a WPF application to find a child of the type FrameworkElement by its name recursively.
-
Paul Kemper
DoubleBuffer any control
-
ForEachControl
Runs action delegate for all controls and subcontrols in ControlCollection.
-
Squared
Returns the squared value
-
Repeat
Repeats a character a given number of times, a little cleaner shortcut than using the string constructor.
-
CloneExplicit<T>
Creates an explicit copy of the given enumerable where the only values copied are the ones you designate.
-
ConvertTo
Método de Extensión para convertir un String a cualquier tipo de Dato
-
DeleteChars
Remove from the given string, all characters provided in a params array of chars.
-
GetSize
This method extends the DirectoryInfo class to return the size in bytes of the directory represented by the DirectoryInfo instance.
-
ToSentence
Creates a sentence from a variable name.
-
TakeFirst
Returns the first X characters from a string.
-
Reverse
Reverse a string
-
FindControlR
Recursive find control method used for finding controls within templates.
-
BeginningOfTheDay
Returns datetime corresponding to day beginning
-
UcWords
Emulates PHPs ucwords - capitalize each word
-
GetStrMoney
this method is convert integer or float money data to separated comma string that is simple to read
-
To
Creates a range of integers as an IEnumerable<Int32>.
-
کد کردن و دی کد کردن رشته در C#
mrchsoft.com
-
Tail
Set the stream position to the place where for example 10 lines will be returned when read to end.
-
RemoveAtFast
Fast version of the RemoveAt function. Overwrites the element at the specified index with the last element in the list, then removes the last element, thus lowering the inherent O(n) cost to O(1). IMPORTANT: Intended to be used on *unordered* lists only.
-
AsBoolean
Converts a string to a boolean value if possible or throws an exception
-
ThisWeekFriday
Returns a DateTime representing the Friday of the current week. Depends on System.Globalization.
-
ToSolidColorBrush
Converts a uint (0xFFb2b2b2) to a Silverlight SolidColorBrush object.
-
Shuffle
Shuffle an ArrayList in O(n) time (fastest possible way in theory and practice!)
-
CSVQuoted
If a string contains a space or a comma or a newline, quotes it, suitable for a field in a CSV file.
-
Sort (Comparison<T> comparison)
stable, in-place sort (mergesort) of a LinkedList<T>. LinkedList<T> has O(1) insertion, great for large lists. this lets you sort it.
-
Load & Save form configuration
This extension methods allows you to load/save location, size and window state (normal, maximized, minimized) of any form to single XML file at program runtime.
-
AnySafe
Determines if the collection contains any elements. If the argument is null, false will be returned. This is useful when you don't know in advance whether the collection will be null or not.
-
ToStringReccurent
Sometimes it is required to collect exception information in textual format. This method serializes general info about exception and all included exceptions reccursively. I'm using this for sending email error reports.
-
Add
Add an string array to ListControl ( dropdown, listbox, radiobuttonlist, checkbox).
-
GzipString
if you want to lost wight of string , you can use gzip
-
SelectItem
Select a item in a DropDownList by value.
-
Is
simple fluent assert for MSTest
-
PathCombine
Combines an IEnumerable<string> using Path.Combine(), which will use the separator character that is correct for the platform used. It is a shorter and more correct way to combine paths than just using + "\\" + . Requires "using System.IO;" at the top of your extension method class.
-
TrimDuplicates
Trims or removes duplicate delimited characters and leave only one instance of that character. If you like to have a comma delimited value and you like to remove excess commas, this extension method is for you. Other characters are supported too, this includes pipe and colon.
-
LengthOfTime
return the length of time between the start and current date
-
ToInt
tries to parse a string to an int, returns zero if it is unable to parse
-
IsSingle
Determines whether the collection has exactly one element
-
IsEqualMoney
Compares two money (decimal) variables ignoring differences above 0.01. Useful for comparing two calculated decimals. 73,414.IsEqualMoney(73,41) returns true.
-
SetInitialFocus
Set the initial focus for a Silverlight ChildWindow.
-
GetOrThrow(string connectionStringName)
By default, ConfigurationManager.ConnectionStrings returns null if the requested connection string doesn't exist. Use this extension method if you want something a bit more snappy - an exception.
-
Paramaters
This extension method will return all the parameters of an Uri in a Dictionary<string, string>. In case the uri doesn't contain any parameters a empty dictionary will be returned. Somehow I can't believe there is no standard method to do this though... Any additions and/or comments are quite welcome :)
-
IfType
Execute code only on certain types
-
Persian DateTime
Convert DateTime To PersianDate
-
ToImage
Create a new Image from a byte array
-
Resize To Text Width
Resizes width of a Windows control to the text that contains.
-
IsNullOrEmptyThenValue
برای حل مشکل مقدار پیشفرض وقتی مقداری وجود ندارد
-
DataBind
Bind to a ListControl (Dropdownlist, listbox, checkboxlist, radiobutton) in minimal amounts of code. Also returns true false if items are in the control after binding and sets the selected index to first value.
-
To
converts one type to another
-
IsLastDayOfTheMonth
Returns whether the given date is the last day of the month.
-
Times
Repeats an action a number of times.
-
Upgrade
Upgrades an ArrayList to a generic List
-
Apply a function
applies a function to the given value - best used with static methods
-
ExpandoObject Print
Dynamic Print method for ExpandoObject
-
join
--
-
IntToGuid
Converts an integer to a Guid. This could be used within a unit test to mock objects.
-
ToArray
Returns an array of int containing all caracters that compose the number.
-
ToView
Extend collections implementing IList to return a DataView. In cases where filters need to be applied to data, this extension will prove handy.
-
IsNull
This method returns true if the value is null otherwise it returns false
-
ListFiles
List/Get all files in a specified folder using LINQ. Doesn't include sub-directory files.
-
IsNull
A better IsNull() implementation. Returns true if object value is null or DBNull
-
SecondsToString
Converts the number of seconds to a string displaying hours and minutes
-
CopyToFile
Writes the specified StringBuilder to the file using the specified path. If the file already exists, it is overwritten.
-
CountOf
Returns whether the sequence contains a certain amount of elements, without having to traverse the entire collection.
-
IsDerived
Checks whether the type is derived from specified type or implemented of specified interface.
-
AppendLine (overrride)
Adds an override to the System.Text.StringBuilder AppendLine method which takes a second parameter so can be used like AppendFormat but also creates a new line.
-
DoesNotEndWith
It returns true if string does not end with the character otherwise returns false. If you pass null or empty string, false will be returned.
-
RemoveCssClass
Removes a css class from the webcontrol. Let's say you have a webcontrol (a label for example) with more than one css class: "defaultClass loggedIn". With the RemoveCssClass extension method, you can easily remove one of them.
-
RemoveSelectedRows
Removes all selected rows from datagridview and returns the response on success
-
IfIs<T>
optionally executes an Action if the object is of the given type.
-
SplitUp()
This SplitUp() extension method takes a sequence and splits it up into subsequences that each have a maximum length. See http://peshir.blogspot.nl/2011/02/example-of-c-lazy-functional.html for more information.
-
InvokeAction
A set of Dispatcher extenstions that make it easy to cleanly queue lambdas on the Dispatcher.
-
CombineWith()
Combines two strings (potentially each of them can be null) with an optional given separator the way you expect. Default separator is a single space.
-
ToObservableCollection<T>()
Convert a IEnumerable<T> to a ObservableCollection<T> and can be used in XAML (WPF, Silverlight, Windows Phone & Windows Store) projects
-
Combine
Combines parts of 2 byte arrays
-
RightOf
Return the remainder of a string s after a separator c.
-
Multiply
Multiplies a TimeSpan by a number (int)
-
AddWorkDays (fixed version)
Fixed version of AddWorkDays
-
GetRandomItem
Return's a random item from a IList<T>
-
DeleteFiles
Delete all files found on the specified folder with a given file extension.
-
ToException
Conveniently produces a exception from a given string.
-
FindControlByType
Used in conjunction with GetChildren(), it will return a T from a list of children of a control. If you are looking to return a list of T, use FindControlsByType() at http://www.extensionmethod.net/Details.aspx?ID=310 Get Children is located at: http://www.extensionmethod.net/Details.aspx?ID=309
-
Upgrade
Upgrades a hashtable to a generic dictionary
-
CacheGeneratedResults
Caches the results of generator methods so that expensive enumerations are not repeated if they are enumerated multiple times. Yet it caches the results lazily, allowing for memory efficiency where possible.
-
CleanBRTags
Remove HTML <br \> tags from the string
-
EnqueueAll
Enqueues all objects from an IEnumerable<T> to the specified queue.
-
RenameColumn
Rename a code that allows only stating the current name column and a new name.
-
Limit<>
Limits a value to a maximum. For example this is usefull if you want to feed a progressBar with values from a source which eventually might exceed an expected maximum. This is a generic extension method with IComparable<T> constraint. So every type which implements the IComparable interface benefits from this extension.
-
ToString(NullOptions)
This ToString() version is null aware. That means it has different behaviors if the object's value is null or DBNull according to the NullOptions enum.
-
ToBytes
Convert a string to a byte array
-
IsEven
Checks whether a number is even
-
DoubleBuffered
DoubleBuffer any control
-
ToObservableCollection
Copies elements from IEnumerable<T> into ObservableCollection<T>. Handy for converting LINQ results into a list appropriate for WPF databinding.
-
FolderSize
Using LINQ, gets the total size of a specified folder. It can also check sizes of subdirectory under it as a parameter.
-
AsDoesntThrow
Wraps an action with a try...catch of a specific exception
-
HandleOnce
Creates a wrapper for the given event handler which unsubscribes from the event source immediately prior to calling the given event handler.
-
FromAppSettings
Get a value from AppSettings section of Web.Config and change its type to the correct one or return a default value in case the key doesn't exists.
-
EnsureFileNameIsUnique
Ensures given file name will return a unique file name, using the format Filename - Copy, or Filename - Copy (n) where n > 1
-
Find Sharepoint List Anyway
this method find your list without any Exception by List Name , Title and ListID
-
Increment
Increments a integer number by one
-
DoesNotStartWith
It returns true if string does not start with the character otherwise returns false if you pass null or empty string, false will be returned.
-
UpdateCollection
Updates items from the collection using a modified version of this collection. Useful in MVVM scenarios needing cancellable edition and delayed persistence.
-
ToLocalCurrencyString
Convert a double to a string formatted using the local currency settings.
-
ConcatTo
Adds a single element at the beginning of an enumerator
-
bool IsSorted (Comparison<T> comparison)
returns true if a sequence is sorted
-
In
Returns true if this string is any of the provided strings. Equivalent to IN operator in SQL. It eliminates the need to write something like 'if (foo == "foo1" || foo == "foo2" || foo == "foo3")'
-
ContainsNumericChars
returns true if string contains numeric chars
-
FormatSafe
Formats a string safely, without throwing any exceptions. Adds an exception message to the resulting string instead.
-
DefaultValue
Returns a the value of a Nullable type if it has a value or it will return a default value
-
KB
Simplest way to get a number of kilobytes.
-
IsNullOrEmpty
Determines whether a collection is null or has no elements without having to enumerate the entire collection to get a count.
-
IsTrue
Returns 'true' if a Boolean value is true.
-
GetImageCodecInfo
Gets the ImageCodecInfo that corresponds to a ImageFormat.
-
SkipLast
take all but the last item from an IEnumerable<T>
-
Convert
Converts all elements in an enumerable list from the its to a destination type by calling a provided conversion function
-
ToSpecificCurrencyString
Convert a double to a string formatted using the culture settings (string representation) passed into the procedure.
-
TimesSelector
Inspired from ye good old ruby on rails, provides you with new DateTime instances based on an integer you provide. Look at realfiction.net -> extension methods for more detail
-
FindControlsByType
Used in conjunction with GetChildren(), it will return a list of T from a list of children of a control. Get Children is located at: http://www.extensionmethod.net/Details.aspx?ID=309
-
GetPropertyValue<T>
Get the base value of CrmProperty object. This is used for interacting with DynamicEntity on Microsoft CRM.
-
ResizeAndFit
This method resizes a System.Drawing.Image and tries to fit it in the destination Size. The source image size may be smaller or bigger then the target size. Source and target layout orientation can be different. ResizeAndFit tries to fit it the best it can.
-
REExtract
Extracts all fields from a string that match a certain regex. Will convert to desired type through a standard TypeConverter.
-
IsNullThenEmpty
A handy extension method for System.String that eliminates this pattern when trying to avoid null reference exceptions. if (someString==null) someString=string.Empty;
-
GetUri
Get the uri to an file
-
Length
Determines how many numbers compose the integer if it was represented as a string.
-
ToTiny
Converts a given URI to a TinyUrl.com address. Utilises the TinyUrl.com website so requires that the application can access the server
-
MultiplyBy
A simple multiplication extension. Backing idea is to overcome the ridiculous flaw in the Int32 value type when a regular multiplication overflows the Int32 value range. Along these lines it would also be possible to gracefully return larger values as e.g. longs, or as BigInt (when the BCL team gets around to implementing it ;-). But the example here sticks to the bounds of the Int32 range.
-
Extended Extension
Beukes
-
MB
Simplest way to get a number of megabytes.
-
ScrollToBottom
Scrolls to the bottom of a Textbox.
-
WriteXMLForReport
Many times you need an XSD file for a report. I have created this extension to write the xsd based on the data table I feed it into the directory I set.
-
Slice of IEnumerable
Returns count elements, beginning from the specified
-
WPF Controls Lists
Using extensions to provide a similar "Winforms.Controls" collection functionality. When implementing generics with System.Windows.Window extensions the VS2013 compiler starts throwing random exceptions, so following is using a static wrapper and each control type has to separated. On tested using VS2013..
-
Accept
Provides a generic visitor Method Extension for more information, please have a look at my blog post : http://www.dotnetguru2.org/nicolaspenin/index.php?title=generic_visitor_implementation_thanks_to_0&more=1&c=1&tb=1&pb=1
-
EnqueueWithCapacity
Sometimes you may need a Queue<T> that, once it hits a capacity, dequeues items automatically to maintain a certain maximum. While it may be best to derive a new type from Queue<T>, this will get it done much more quickly. This is very useful for maintaining a rolling average or a "history" feature.
-
Randomize
Randomize the Items in the list
-
In
Determines whether a IEnumerable<T> contains a specific value
-
RemoveSpecialCharacters
Sometimes it is required to remove some special characters like carriage return, or new line which can be considered as invalid characters, especially while file processing. This method removes any special characters in the input string which is not included in the allowed special character list.
-
IndicesOf
Finds all the indexes of the give value or values in an enumerable list
-
IsDefaultForType
Returns true or false depending on if the given object is equal to the default(T) value of the type.
-
RemoveClickEvent
Remove click event from given button.
-
LessThan
Returns a boolean value of true if the item being compared is less than the value of the parameter.
-
IsStatic
Determines if a type is static by checking if it's abstract, sealed, and has no public constructors.
-
GetDate
Return the current date and time
-
LoadBitmapFromResource
Create new Bitmap from resource image
-
Product
Computes a product of all elements in the sequence.
-
RemoveColumn
Code that allows deleting a column stating the name
-
GetStringInBetween
Get string in between two seprators
-
WrapEachWithTag
Creates a string that is each the elements' ToString() values wrapped in the 'tag' that is passed as a param. Good for converting an IEnum<T> into a block of HTML/XML.
-
IsNotNull
This method returns true if the value if not null otherwise it returns false.
-
WriteTo
Writes the entire contents of this stream to another stream using a buffer.
-
IsMobileValid
For Philippine mobile code but can also be adjusted based on your mobile network code. Check if the given number is a valid formatted international number.
-
ContainsAll
Check if the string contains all the elements in the array.
-
RandomElements
Returns a number of random elements from a collection
-
Repeat
for Repeat String .
-
Join
This extension method joins the StringBuilder values
-
In
Returns true when a number is included in the specified collection.
-
ReverseString
for reverse string
-
IsNotHidden
Filters out directories that are hidden
-
Clear
clear the contents of a StringBuilder object
-
IsNullOrEmpty
Indicates whether the specified IEnumerable collection is null or empty
-
ContainsAny
Returns if a given string contains any of the characters provided in a params array of strings.
-
In
Filters a list based on a comma-separated list of allowed values. This is a lot more concise than using a number of 'or' clauses
-
ThrowIfDefault
Throws a given Exception if the given object is equal to the default value for the type
-
ThrowIfAny
Throws a given exception is any value in a set passes a given predicate
-
SplitCamelCase
Split any string using camel case pattern.
-
ExcelColumnName
Returns the excel column name from a column index
-
ContainsSameKeys<>
Checks if the two dictionaries have the same keys
-
IsValidCodeMelli
صحت کد ملی
-
Cycle
Repeats a sequence forever.
-
toggle for bool
Toggle to bool
-
IsNullOrEmpty
Check either IList object is null or empty.
-
MaxObject
Selects the object in a list with the maximum value on a particular property
-
ToDistinctDictionary
Creates an IDictionary<TKey, TValue> from the IEnumerable<TSource> instance based on the key selector and element selector. This is distinct by using the built-in index of the dictionary instance for either adding or updating a keys corresponding value.
-
ShowWebPage
This extension method trigers the default navigator with the address pointed by the string
-
GetMessages
Return all messages after call Validate method on Microsoft EnterpriseLibrary Validation Block
-
TimesOrUntil
Attempts to retrieve a valid a result from your function one or more times with an optional 'in between' step (i.e. delay). Replaces a common code pattern with a more readable, shared pattern.
-
HasValueAndEquals
Substitutes this: int? index = GetIndex(); if (index.HasValue && index.Value == 10) ...
-
GetFirst
get fist n charactor in string
-
ToException
String Typed Exception Extension
-
GetChoiceFieldValues
this method find items of a Choice Field in a Sharepoint List
-
ExcelColumnIndex
Returns the excel column index from a column name
-
Each
Iterates over all the elements in a collection and performs the given action, usually given as a lambda.
-
To
Allows enumaration of sets of characters by expressing them as a range, for example all the lowercase characters. Allows reverse order as well.
-
ToReversedDateTime
Takes a DateTime object and reverses it to an SQL type string (yyyy-mm-dd hh:MM:ss)
-
Split
Split by expression
-
Formating
formating the string with a custom user-defined format. # sign is input characters.
-
Between
Works on Comparables to check whether the checked value is between two other values. Check relaifciotn.net -> extension methods for more details.
-
In
Checks if object is any of provided values separated by comma
-
Randomize
Randomizes am IEnumerable<T>
-
Uppercase with null check
Converts a string to upper-case but checks for null strings first
-
GetNestedXml
This one allows you to get nested XML from within a node. Let's say you're parsing an HTML file using the XDocument class and you want to pull out the nested code including tags. This is what you can use!
-
ToSortedString
Returns an alphabetically sorted list for all public and instance properties, along with its associated values.
-
GetResponseWithoutException
Allow to get the HttpWebResponse event if the request wasn't successful, in order, for example, to know what went wrong
-
IsMatch
Matches yourFace to myButt
-
GetData<T>
Get a saved value from the app domain and convert it back to its original type
-
Get Percentage
Gets the specified percentage of the given value.
-
Say
Speaks any object using the speech synthesis API
-
ImplementsInterfaces(List<Type> types)
Determines if a class object implements an interface type and returns a list of types it actually implements. If no matching type is found an empty list will be returned.
-
GetMonthDiff
Compute dateTime difference
-
EF IQueryable OrderBy string Extension
EF 에서 문자열로 정렬 컬럼 지정하고 싶을때 사용하면 됩니다.
-
FormatIf
Conditionally formats any value type based on a Lambda Expression
-
InnerTruncate
Truncates the given string by stripping out the center and replacing it with an elipsis so that the beginning and end of the string are retained. For example, "This string has too many characters for its own good."InnerTruncate(32) yields "This string has...its own good."
-
WithVar
Improve readability of string.Format
-
ToMouseInfo
Converts a complex multitouch, pressure sensitive silverlight stylus object to a simple MouseInfo object.
-
GetSelectedValue
Get the selected value of a DropDownList by returning the value stored in the forms collection. This allows you to turn EnableViewState off on a DropDownList and still easily retrieve the selected value
-
DataTable to List
Datatable to List
-
LastChar
Select Last character in string .
-
NullStringToEmptyString
If input is null, returns empty string. Otherwise returns original input. After using this method, you can use all string methods without the danger of null exception.
-
HasMultipleInstancesOf
Determines whether a string has multiple occurrences of a particular character. May be helpful when parsing file names, or ensuring a particular string has already contains a given character. This may be extended to use strings, rather than a char.
-
ConstrainToRange
Many times you may wish to impose boundaries on what a certain variable can be. This is especially useful for validating user input. For any comparable, it simply returns the value, truncated by a minimum or maximum
-
In
Determines whether a variable of type T is contained in the supplied list of arguments of type T, allowing for more concise code.
-
FristChar
Select Frist character in string .
-
IndicesOf
Gets all the indexes in which a certain substring appears within the string.
-
ForDatabase
For use with old school ado.net database command parameters. This basically converts the string to System.DBNull.Value if the string is null else it returns the string.
-
DataTableToList
Convert DataTable To List
-
AsNullSafeEnumerable
You don't need check whether the collection is null.
-
Intuitive date creation
Allows you to create date very easily, like 19.June(1970)
-
ThrowIf
Just throw if you can
-
BinarySerializer
BinarySerialize a List<T>
-
ContainsNoSpaces
Checks if a string contains no spaces
-
ConvertDataTableToHTML
Extension Method which converts Datatable to HTML table
-
FindImmediateParentOfType<T>
An extension method to find the parent control of a specific type in asp.net
-
DeleteWithPrejudice and Purge
These 2 extension method allows you to delete a folder or just purge all the folder content even if there are Readonly, System, and/or Hidden attributes files in it. The default Delete method doesn't work if there are files with Readonly, System, and/or Hidden attributes.
-
CamelCaseToHumanCase
Turn any string formed with camel case into a human cased string.
-
Append() and Prepend()
Append() adds a value to the end of the sequence. Prepend() adds a value to the beginning of the sequence. This is usefull if you are not using .NET Core or .NET Framework 4.7.
-
Quick writeline
Write a variable to System.Diagnostics.Debug.WriteLine() (Or other output method)
-
NextDayOfWeek
Will return the next occurring day of week
-
Slice()
Takes a section of a string given the start and end index within the string.
-
StartOfWeek
TakeStartOfWeek
-
Add Data to Dropdownlist,Radiobutton List etc.
Add Data to Dropdownlist,Radiobutton List etc
-
AppendNode
Append new child XmlElement to base XmlElement.
-
BinaryDeserializer
Deserializa um arquivo binario em uma lista generica
-
TakeFrom
Returns the remaining characters in a target string, starting from a search string. If the search string is not found in the target, it returns the full target string.
-
Pleuralise
A simple method that adds 's' onto words. used when you return x record(s)
-
RemoveRightIfPresent
Removes end of string if it equals to parameter, otherwise returns origin string
-
FindCommonAncestor
Finds the nearest common ancestor for type based on the inheritance hierarchy.
-
UppercaseFirstLetter
Upper case first letter
-
DateTime Use in Library SystemManagement
this extension method is Used in Library System Management for return Recive book Date if you use this method this add to Date.Now 14 Days with change the Year and Month Day
-
GetAttribute
get custom attribute helper
-
Split
Extension method to split string by number of characters.
-
LimitTextLength
Limits a piece of text to a certain maximum length for the purpose of showing it to the user as part of some (G)UI or report that has limited space.
-
Merge
Merges two dictionaries
-
ToStringLimit(limit)
Save values checking length
-
IEnumerable(string).Join
Joins a series of strings connected by a separator.
-
GetFilesInVirtualDirectory
This extension method acts similarly to Directory.GetFiles except that the directory path is expressed as a virtual directory.
-
SetLiteralText
Often you have to set the text of lots of literal when databinding a ListView control in ASP.Net. This method lets you write that in one line.
-
Shorthand Task.Factory.FromAsync (for .NET 4.0)
This extension method series represent shorthand version of Task.Factory.FromAsync (for .NET 4.0)
-
ToNullable
Converts a string to a primitive type or an enum type. Faster than tryparse blocks. Easier to use, too. Very efficient.
-
GetValue
Retrieve Querystring,Params or Namevalue Collection with default values
-
RemoveTicks
Legible way to remove ticks from a datetime. Use instead Add negative days
-
Claim Value
C# with get claim value
-
decimalToTime
Convert decimal in string Timeformat (hh:mm)
-
EqualsByValue
Determines whether two String objects have the same value. Null and String.Empty are considered equal values.
-
String write/save in file
String save/write in file
-
String.IsNotNullThenTrim
Perform a Trim() when the string is not null. If the string is null the method will return null.
-
Format
Formats any value type
-
IsVowel
Recognizes vowels in European languages #i18n
-
RandomString
Return a random string of a chosen length
-
Id
Identity function
-
RemoveTraillingZeros
Remove trailling zeros from a decimal value
-
GetTotalMonthDiff
Compute dateTime difference precisely
-
ToFirstAll
This method makes the caps for all words in a string
-
Kerollos Adel
insert item in the top of list
-
GetMatchValue
Returns a collection of string that matched on the pattern.
-
CheckSheba
چک کردن شماره شبا وارد شده جهت درست بودن فرمت و الگوریتم آن
-
ToDictionary<>
Converts any object to a dictionary
-
EntryEquals
Extension method for comparing dictionaries by elements (key pair values)
-
RequireOrPermanentRedirect<T>
Use this method to easily check that a required querystring both exists and is of a certain type. This lets you fire off a few checks in your page_load and then write the rest of the code on the page safe in the knowledge that the querystring exists, has a value and can be parsed as the intended data type. If the querystring is not present or is an invalid type the user is sent to the RedirectUrl. Urls starting with a tilde (~) are also supported. This url is normally the next logical level up the tree such as an admin manaagement page, a product index page or if there isn't an appropriate page then you can send the user back to the homepage.
-
Nullable Coalesce
Coalesce any like nullable types.
-
WherePrevious
Compare Through a predicate every element of a list with the previous one
-
ValidateNumber
Validates that input text is a number
-
WriteToXML
Serializes objects into and from XML documents
-
NumericUpDown SafeValue()
http://peshir.blogspot.nl/2011/02/safely-set-numericupdown-control-value.html
-
ToNullable<> Generic String Extension
Converts a string to a primitive type T, or an enum type T. Faster than tryparse blocks. Easier to use, too. Very efficient. Uses generics so the code is cleaner and more robust than doing a separate convert method for each primitive type.
-
XML TO Class
Parse XML String to Class
-
timeToDecimal
Convert string time(hh:mm) in decimal
-
ToList(capacity)
LINQ ToList() extension method with an extra capacity argument. This can boost the speed of creating the list.
-
IntegerToTimeSpan
Converts an integer to a timespan
-
TimeSpanToString
Converts a timespan to a string displaying hours and minutes
-
StringToTimeSpan
Converts a string to a timespan
-
Stuart Sillitoe
Emulation of PHPs ucfirst()
-
GetSaturday
This code will provide the Sunday DateTime from the week of DateTime object the extension method is called from.
-
ToDouble
Converts a string to a double
-
SplitNext
Split the next part of this span with the given separator
-
CompressAndEncrypt
Compresses and Encrypts Data
-
EnqueueAll
Enqueues an aray of items to a Queue rather than having to loop and call Enqueue for each item.
-
Nullable Coalesce
Coalesce any like nullable types.
-
FindMin() and FindMax()
Selects the object in a list with the minimum or maximum value on a particular property
-
IsNullThen
Replaces NULL with the specified replacement value.
-
IEnumerable.None
The opposite of Any(). Returns true if the collection is empty, or if no item matches the predicate.
-
All
yield all child controls recursivly
-
ApplicationBuilderExtensions
.Net Core use package.json files
-
Shorthand Task.Factory.FromAsync (for .NET 4.5)
This extension method series represent shorthand version of Task.Factory.FromAsync (for .NET 4.5)
-
Delegate Type Casting Extension Methods
These extension methods enable type casting between generic Action, generic Func, EventHandler, generic EventHandler and non-generic Action, non-generic Func, non-generic EventHandler as well as generic EventHandler and non generic EventHandler delegates in mscorlib and System.dll assembly.
-
DateTimeFloor;DateTimeCeiling
Floor, Ceiling, Midpoint and Rounding calculations for various time intervals.
-
BooleanExt
Extension Method to Execute Delegate Based on Boolean Value
-
CountNonEmptyItemsInStringArray
Method returns the number of non-null or non-empty items wihtin a string array of length n.
-
Or
Returns the object if it's not null or the first object which is not null.
-
Anjum Riwi
Parse the string in exact data format with null check
-
ReplaceIgnoreCase
ReplaceIgnoreCase
-
Check Opened Port
بررسی باز بودن پورت
-
Arithmetic Expression Validate
Validate a string arithemetic expression
-
Convert a Rectangular to a Jagged Array
Converts a T[,] (rectangular array) to a T[][] (jagged array).
-
Ori Samara
Extracts the underylying SQL query from an IQueryable datatype
-
Perason Correlation Coefficient for a datatable
An extension method that add the possibility calculate the Pearson correlation coefficient using the names of two columns of the data table in question.
-
Replace
Use this extention method with a lambda expression to replace the first item that satisfies the condition
-
big number library
enables calculation of big number
-
GetBoolString
If you need to show "Yes" or "No" depending on some bool property
-
IsNotIn
Determines if an instance is not contained in a sequence. Is the equivalent of Contains == false, but allows a more fluent reading "if item is not in list", specially useful in LINQ extension methods like Where.
-
IsMatchRegex
Check if a string is match with given regular expression pattern
-
Follow
Follows sequence with new element
-
AddOrdinal
Add an ordinal to a number,
-
DrawCircle
Draw circles on Unity GameObjects
-
ExceptWithDuplicates
Returns a List of T except what's in a second list, without doing a distinct
-
FindParent(string parentName) - For XElement
Find parent XElement from a provided name. Returns null if no match
-
NextEnum
Generates random enumeration value
-
NextAnniversary
Calculates the next anniversary of an event after the initial date on the Gregorian calendar. Use the original event date or the event month/event day as a parameters. The optional parameter, preserveMonth will determine how to handle an event date of 2/29. Set to true will use February 28 for a standard year anniversary and set to false will use March 1 for a standard year anniversary.
-
IfNullElse
Check if string is null or white spaces and return null alternate value
-
Extract
Extract a string from an other string between 2 char
-
Get
IDataReader extension to get values
-
IsBetween
Checks whether the given integer value is between the start and end value.
-
DisplayDouble
Converts a Double to a String with precision
-
Between
c# version of "Between" clause of sql query with including option
-
Duplicates within an IEnumerable
Duplicates within an IEnumerable
-
Class to XML
Parse Class to XML
-
GetSunday
This code will provide the Sunday DateTime from the week of DateTime object the extension method is called from.
-
Chainable List.Add / typesafe
Allows you to chain .Add method
-
SplitPascalCase
Splits the given string by pascal case.
-
CurrentLocalTimeForTimeZone
Returns the current local time for the specified time zone.
-
GetContrastingColor
Gets a contrasting color based on the current color
-
Or (with explicit reference for strings)
Returns the object if it's not null or the first object which is not null, With explicit reference for strings
-
isRandomSecure
blowdart random test
-
AwaitableTaskEnumerableExtensions
Awaitable fluent extensions for enumerables of task
-
Aspose.Word
Is a Extension for the ASPOS Word API.
-
ReverseWords
Reverse Words
-
EnqueueRange
Enqueues a generic collection of items
-
Cached
Cache result of IEnumerable iteration. Similar to other implemetations with two advantages: 1 - Not flawed (Dispose of IEnumerator done by compiler) 2- Simplier
-
AsSequenceTo
Creates a numeric list of integers starting at the current instance and ending at the maximum value.
-
Shorthand ReferenceEquals
This extension method represents shorthand version of ReferenceEquals method.
-
WhereStringIsNotNullOrEmpty
Where string is not null or empty extension method for NHibernate 3.0 and its new query API QueryOver.
-
CreateSelectList
Convert any list of objects to a select list
-
ToObservableCollection
Return observable collection for IList object.
-
FirstChildOrDefault
Finds first occurrence of a Unity Transform that satisfies the predicate
-
SelectionValue
Returns Dropdownlist Selected Value as Integer
-
CurrentDateTimeInAmsterdam
Get the current date time in Amsterdam
-
ConcatItem / ConcatTo
Concats a single item to an IEnumerable
-
IsDate
Determines if specified string is DateTime. Its an improvement on Phil Campbell's version
-
WeekOfYearISO8601
Gets the number of the week according to the definition of the ISO 8601
-
ReaderWriterLockSlim
Simplified and elegant usage of ReaderWriterLockSlim that
-
NullableSum
Takes an array of nullable values and sums them up. Can be easily replaced with int?
-
ConvertToDateTimeNullable
ConvertToDateTimeNullable
-
et
et
-
FirstMondayOfYear
FirstMondayOfYear
-
To<> Convert
To<> Convert
-
Read And Write Settings Application
You can mangement Properties Settings.
-
ValidateAndConvertDictionaryData
Dictionary Extension
-
HashBy
Implict hashing
-
Parse XML Physical Path to Class
Get XML from Physical Path and Parse into Class
-
FromIso8601WeekNumber / ToIso8601WeekNumber
Converts to and from ISO 8601 Week numbers
-
IsValidIranianSocialCode
بررسی اعتبار کد ملی
-
toDecimal
Object to decimal?
-
InsertSorted
Insert an item to a sorted List
-
Format
string formator,replece string.Format
-
Zero Index CopyTo
CopyTo without the second parameter, for when you just want to copy array A to array B verbatim and size is not a concern.
-
StackToSide
if you Enter Some numbers in the Stack one number has inserted in Left Side and another one has inserted in Right Side.Ebrahim5132@gmail.com
-
WriteToFileUtf8
Write File in UTF8 from MemoryStream