title: C# extensions for asp.net, what is the standard practice for placing the extensions file?
body: <p>1) for asp.net (web forms), where do the extensions methods in c# go? in the web folder? </p>
  
  <p>2) If the method is meant to be used in both a library and the web code behind pages, what is the correct way to allow the extensions to be used in both projects (the asp.net solution references the library project)? </p>
  
  <p>3) For extensions pertaining to different types (ie. extensions for datatable, and extensions for strings), is it the standard practice to put all of them in one Extensions.cs file?</p>