I'm not experienced at all with VB but I'm using it on my Senior Design project and I'm kind of stumped. I just want to be able to start a loop with a start button and end it with a stop button. I'm fine with starting the loop - It's just that while the loop is executing, the cmdStop_Click() event cannot occur because the loop is executing. Can someone tell me a)if using a command button click event to stop a loop is possible and b)how would I go about it or where can I see an example of this in action?