Is it possible to get the source code of a Sharepoint 2010 webpart from just its wsp file?

If I have just a wsp file of a Sharepoint 2010 webpart, is it possible getting its source code, in a way I can open it in Visual Studio 2010?

Solution

A .wsp is actually a .cab file. Inside the cab file you should find the .dll you want to decompile as well as any .ascx files. Using ILSpy you might be able to decompile the .dll file.

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