-- Updated for ASP.NET AJAX Final Release and for the February WPF/E CTP. Live version now available --
Microsoft just released ASP.NET AJAX version 1.0 at http://ajax.asp.net! Get it while it's hot! :-) If you're new to ASP.NET AJAX and want to get started quickly, Microsoft has published several different videos. I have several here on my blog as well.
It's no secret that events and delegates play a crucial role in the .NET framework. Without them it would be hard to handle user input or notify other objects when an action occurs. I get a lot of questions about events and delegates in classes I teach so I decided to put together a video that outlines the fundamentals of creating a custom class that exposes an event and a delegate. The video also demonstrates how to create a custom EventArgs class and how events can be consumed using C#.