Form created by thread inaccessible

[RJGCarey]

I have created a new instance of a form from a thread that responds to incoming UDP packets from another computer. This form shows up in the screen but the user cannot use it’s command buttons. Other threads cannot manipulate it’s variables or cause a paint event on it’s picture box. How does one accomplish these things? Thanks. RCarey

[Joshua Quick]

Forms are not thread safe. Because of this, I highly recommend that you display all of your forms on the same thread. If you need a separate thread to manipulate a form's contents, then look into using the BeginInvoke() method. See the below link for more details. http://www.codeproject.com/csharp/begininvoke.asp[^]