How can I amend code in a C# project in VS2010 that I have finalised and placed in the GAC

I have a C# control library built using Visual Studio 2010 that I have finalised and released into my General assembly Cache. I now want to recode the library and don't know how. I can open the project in Visual Studio 2010 but I cannot access the code because the modules presumably have been moved to the GAC and locked. I would be happy to copy the code into a new project if such a 开发者_StackOverflow社区thing is possible but currently I have no access to my code.

This is not the way it works. I'm guessing the source code got checked-in to source control and the files are now read-only. You have to check them out to make them editable. Talk to the members of your team about this.