Is that possible to extract C# source code from Winforms application exe file

Question

Can someone tell me if it is possible to view source code only using exe file. For example I have made project and in debug there is exe file so if I'll send this to someone he will be able to view it's source code(Using hacking tolls or by something)?

Answer 1

The answer is Yes

Your code can be de-compiled and can be seen.

I personally use this one for .net:

http://www.jetbrains.com/decompiler/

But it is not the only one, there are many decompilers exist.

Answer 2

Yep, there's Resharper or ILSpy

Answer 3

Certainly he/she can see your IL code, the code that has been constructed by your compiler. For instance, a tool for doing this is the MSIL Disassembler http://msdn.microsoft.com/en-us/library/f7dy01k1(v=vs.110).aspx. I suppose having the IL language it wouldn't be difficult to get the C# code.