How to debug Visual Studio extensions

Question

I\'m just writing a VSIX extension for Visual Studio 2010 and can\'t figure out how to debug it.

One obvious method is to output messages. Extension template uses

Answer 1

If you try to debug a UnitTestExtension, you should also attach the debugger to the vstest.*.exe processes like descibed here. Otherwise you might see the activate breakpoint but the debugger will never hit it.