Extension Methods from Graham Peel
Gets a nullable DateTime object from a string input. Good for grabbing datetimes from user inputs, like textboxes and querystrings.
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.
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.