WinForms thread safe control access

Question

I get error Control accessed from a thread other than the thread it was created on when I try to access WinForms control. I know that all modifications of contr

Answer 1

You must use BeginInvoke. If you need to get a value back (eg, the Text contents of the control), you may use EndInvoke to wait for completion.

That said, you may want to consider doing things the other way; have the GUI thread 'push' data over to background worker threads. This helps reduce the chance of racing against user input, and leads to a cleaner design with a clear separation of GUI and core logic.