How do i prevent this Window from showing if Program crash

Question

Hello everybody, i'm having a hard time finding out how to prevent the window that comes up if my program crashed. It is programmed with C# - Windows Forms Application.

Down below is a picture of the Window that pops up if it crashes, i don't want this to come up if i get an unexpected crash :P

http://i.imgur.com/xiZGGsp.png

//Gert