My Timer event crashes because the events are called on a different thread

Question

I get the error \"Cross-thread operation not valid: Control \'label1\' accessed from a thread other than the thread it was created on.\" when I run this code:

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Answer 1

I'm assuming you're talking about a WinForms application.

When trying to update a Form element (which lives on the UI thread) from another thread, you need to use Control.Invoke or Control.BeginInvoke. You pass a delegate to the method you want to invoke (or pass an anonymous method in) and then that delegate gets called on the UI thread rather than the calling thread.