Hello,

for your information in case you didn't yet notice the news: Microsoft has
announced plans to give developers the ability to view .NET class library
source code. This is announced here:

http://weblogs.asp.net/scottgu/archive/2007/10/03/releasing-the-source-code-for-
the-net-framework-libraries.aspx

Says the blog:

----------------
"...the ability for .NET developers to download and browse the source code
of the .NET Framework libraries, and to easily enable debugging support in
them. [...]

We'll begin by offering the source code (with source file comments included)
for the .NET Base Class Libraries (System, System.IO, System.Collections,
System.Configuration, System.Threading, System.Net, System.Security,
System.Runtime, System.Text, etc), ASP.NET (System.Web), Windows Forms
(System.Windows.Forms), ADO.NET (System.Data), XML (System.Xml), and WPF
(System.Windows). [...]

The source code will be released under the Microsoft Reference License
(MS-RL).

You'll be able to download the .NET Framework source libraries via a
standalone install (allowing you to use any text editor to browse it
locally).  We will also provide integrated debugging support of it within VS
2008."
----------------

Sounds great to me!

Other posts related to this:

http://www.eweek.com/article2/0,1759,2191696,00.asp

http://www.regdeveloper.co.uk/2007/10/04/microsoft_dot_net_opensource_license/