Question

I have a c# .NET winforms app making this async call:

simpleDelegate.BeginInvoke(null, null);

My function is being called by the delegate and that all works great. The problem is, after the function finishes on the worker thread, I need the main thread to update some controls on my winform. If the worker thread tries to update these controls, .NET freaks out. But I need the main thread to remain responsive to user actions, and then call my function UpdateFormAfterServerCall() ONLY AFTER the worker thread finishes calling the async function.

I would greatly appreciate if you can give me a concise code sample, rather than abstractly explain how to do this. I’ve read a hundred explanations already, and am just having trouble wiring it together correctly.

Note: Before the BeginInvoke I have:

simpleDelegate = new MethodInvoker(CallServer);

Answer 1

From different thread if you want to update GUI which is owned by another thread use MethodInvoker

if(control.InvokeRequired)
control.Invoke( (MethodInvoker) ( ()=> updating_function() ) );
else
updating_function();