A Minimalistic Control Extender

Whenever I try to create a control extender with ASP.NET AJAX, I never get it right at first try even if I follow this tutorial to the letter. My script won’t register, or the client-side class would fail to create, etc. Poking around the latest build of the AJAX toolkit, I figured this much gets an extender going:

[assembly: WebResource ("FooBarExtender.js", "text/javascript")]
namespace MyControls
{
 [TargetControlType (typeof (Control))]
 [RequiredScript (typeof (CommonToolkitScripts))]
 [ToolboxItem (false)]
 [ClientScriptResource (
     "FooNamespace.BarClass", "FooBarExtender.js")]
 public class FooBarExtender : ExtenderControlBase
 {
 }
}

The reason I want CommonToolkitScripts is to have access to Common.js where the CommonToolkitScripts class resides. The class comes with a ton of helpful functionality. You can call its methods via the $common alias.

It’s a pity you can’t just copy and link to this file because of the funky way the class is written. It would come awfully handy in projects other than extenders.