I just need a file (picture, pdf or other type file for printing) of the framework structure. It is very usefull while learning .Net framework.
You didn't specify which version of the .NET Framework, and it's a little unclear if you mean a map of each class or a map of all classes. Anyhow, here's for .NET 3.5:
http://download.microsoft.com/download/4/a/3/4a3c7c55-84ab-4588-84a4-f96424a7d82d/NET35_Namespaces_Poster_LORES.pdf