Deadlock?

[Guest]

Hi!
I have a serious problem with what appears to be a deadlock in .NET cf. It
occures when I invoke Invalidate on a control from a thread other than the
main thread when the main thread is busy (i.e. displaying a form).

I have a situation similiar to this:

public class MyForm : System.Windows.Forms.Form
{

// ...

private void MyThreadedMethod()
{
while(true)
{
myLabel.Text = "..."; // This hangs the application if the main
thread is busy.
System.Threading.Thread.Sleep(1000);
}
}

// ...

}

How can I avoid this?

Thanks in advance!
Nille

 

[Peter Foot [MVP]]

You should always use Control.Invoke to update UI elements from a worker
thread. There are some limitations in the Compact Framework's Control.Invoke
method but these are not impossible to workaround - See an example here on
Daniel's blog:-
http://www.danielmoth.com/Blog/2004/10/invoke-cf-and-full-fx.html

Peter

 

[Daniel Moth]

http://www.danielmoth.com/Blog/2004/10/invoke-cf-and-full-fx.html

Cheers
Daniel

 

[Guest]

Thank you very, very much for responding! I hope this will solve my problem
(haven't been able to try it yet)!

Nille