asynch call back and adding controls

[Lance Johnson]

I have an asynch call setup and a callback for it. During the callback I
want to be able to add controls to my form. However, it appears it's
working in the context of the asynchronous thread. Has anybody had this
problem and what can I do so I can add controls to my form after this
occurs.

Lance Johnson

 

[Joshua Flanagan]

You need to call the Invoke() method on the Form you want to add
controls to, within your callback method.

Within your callback, have something like this:
(assumes callback is defined in the form class)


private void MyCallBack(){
if (this.InvokeRequred){
// running on a different thread, need to invoke on form's thread
this.Invoke(myCallBackDelegate);
}
// this part is guaranteed to run in the form's thread
// do work to add controls to form
}