C# InvalidOperationException with backgroundWorker

Question

I have this line in my backgroundWorker thread:

Dispatcher.CurrentDispatcher.BeginInvoke((Action)(() => this.Network.Nodes.Add(node))).Wait();

I'm getting an exception InvalidOperationException from it.

I need to update a UI component, WPF MVVM, so i need to access the ui thread for update — Yogevnn, May 10 '14 at 12:04
I tried working with the report progress and that didn't go well.. — Yogevnn, May 10 '14 at 12:10
Add the context and full error message. Right now it's not answerable. — H H, May 10 '14 at 12:11

score 0 · Answer 1 · answered May 10 '14 at 12:16

0

I would imagine that

BeginInvoke(...).Wait()

would deadlock if you are currently on the UI thread. Try using Invoke instead.

answered May 10 '14 at 12:16

Ventsyslav Raikov

But how can i wait for the action to finish? – Yogevnn May 10 '14 at 12:51
Invoke is synchronous, it will return when the action is finished. Just replace BeginInvoke with Invoke and remove the .Wait() at the end. – Ventsyslav Raikov May 10 '14 at 12:52

1 Answers1