When you "switch" from C++ to C# and want to use "switch" statement, do not forget on of the major differences between switch in C++ and switch in C#:
Unlike the C++ switch statement, C# does not support an explicit fall through from one case label to another. (here)
Even default must have it's own break now - otherwise you'll get a following message from compiler:
Control cannot fall through from one case label ('default:') to another.
So, do not forget break for default
break; // !!!