Hi there,
I have not been posting for a long time, and sorry for every MyExposé users, I am not releasing a new version of it (as I am very busy at this moment, and I will be also the next few months).
Nikhil Kothari has recently published a new version of Script# (a tool that works like GWT that generates JavaScript client-scripts from C# code). The greatest new feature is the support of ASP.NET AJAX. So I wrote a tutorial to discover Script# by creating ASP.NET AJAX components. In this article you will create an IP v4 calculator that can compute Network IPs from an host IP and a subnet mask. All the behavior will be executed client-side and will be generated by Script# from C# code (you will enjoy IntelliSense, refactoring, class diagrams etc. in your client code).
Here is the english version (thanks to Mauricio for the help on translation): ScriptSharp and ASP.Net Ajax[en].pdf
And here is the french version: ScriptSharp et ASP.Net Ajax[fr].pdf
Update:
There was a mistake in the presentation of Script# (I wrote that Script# was inspired from GWT, and that is not true). This has been repaired.
I released a Visual Add-in allowing to use Script# to call Web Services.