Uninstall C# .NET

I have really messed up an uninstall of C# .Net and then reinstalled. Now I can't start C# and I can't uninstall it cleanly.

Does anyone have any suggestions as to how I can remove /get both it and the Net Framework completely off my machine.

The uninstall option of setup will not work............I can't ask Microsoft because I can't get the product to work and therefore I
can't get the product ID number from the IDE/Help.

Any suggestions would be appreciated.

If the uninstaller in the setup program doesn't work , then it doesn't work as you said . So reinstall windows again :confused: