Is only the UI-thread able to display to the screen, or can other threads do this as well?
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FYI: You can have more than one UI thread in a process. – Brian Rasmussen May 19 '11 at 18:20
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@Brian: Where can I learn about this? I didn't know there was more than one UI thread . . . – richard May 19 '11 at 18:23
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1.NET restricts access to GUI controls to the STA thread that created them. You can create other STA threads with their own set of controls. – Brian Rasmussen May 19 '11 at 18:27
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No you can only access to UI directly from the UI thread but you can marshal the results from other threads, such as using the Control.Invoke or control.BegineInvoke/EndInvoke
Check this out
Phil Murray
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You can use the BeginInvoke() member of all GUI controls to change the values of their properties from background threads.
If you are using a backgroundworker you could use the ReportProgress event, which is even easier.
Mr47
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also Depends if you are using WinForms or WPF, in Winforms you use Control.Invoke and in WPF you use Dispatcher class. WPF has more sophisticated thread UI dispatcher
Bek Raupov
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