In the earlier question OP has created a situation where a BCL method was preferred to his extension method. OP could not verify the method to be called. How can I do with with Visual Studio debugger?
Note: I am aware that you could press F12 or you could fire up the Reflector.
Right-click the line in the debugger and look at the
Step into specificmenu, which will show you the full name of the method it’s executing.