ExtensionMethod.NET is a database of C# 3.0 and Visual Basic 2008 extension methods. It contains many user-rated extension methods that will expand your code library immediately.

Over 100 Extension Methods

Extension methods add functionality to existing classes and allow you to expand the .NET framework. This way your favorite functions integrate seamlessly into the framework. For more information about extension methods visit the C# 3.0 and Visual Basic 2008 MSDN Library pages.

We invite you to submit your favorite extension methods and download and use others.

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TOP 3 Extension Methods

OrderBy(string sortExpression)  Submitted by C.F.Meijers on 2008/4/25 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.Language C# Type System.Collections.Generic.IEnumerable<T> Downloads 263
Encrypt & Decrypt  Submitted by Mark de Rover on 2008/1/02 Encrypt and decrypt a string using the RSACryptoServiceProvider.Language C# Type System.String Downloads 246
Pivot  Submitted by Fons Sonnemans on 2009/1/21 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. Language C# Type System.Collections.Generic.IEnumerable<T> Downloads 166

Recently added

Validate Email  Submitted by john on 2010/1/29 Validate email idLanguage C# Type system.mail Downloads 0
DataTable to CSV export  Submitted by John on 2010/1/29 Export datatable to CSV fileLanguage C# Type System.Data Downloads 0
FindCommonAncestor  Submitted by David Hanson on 2010/1/14 Finds the nearest common ancestor for type based on the inheritance hierarchy. Language C# Type System.Type Downloads 0