where is csharp source code is used sharepoint

Question

please provide the csharp area in sharepoint. what are the part csharp source is used. how can be document loaded in the sharepoint. whether it can be done through by c sharp.

Answer 1

Almost everything on SP is built into assemblies, so you can't see the C# source. You can use a tool like Reflector to disassemble these assemblies (but they could be obfuscated).

If you want to upload documents through C# have a look at the WebServices. Here's a pretty good tutorial.