Wpf Dispatcher.BeginInvoke delegate issue

Question

In my WP SignalR application I'm using this code:

_dataHub.Subscribe("ReceiveMessage").Received += list => App.RootFrame.Dispatcher.BeginInvoke(() => Messages.Add(list[0].ToString()));

But I have to use similar code to subscribe to my SignalR server application.

I tried this one:

 _dataHub.Subscribe("ReceiveMessage").Received += list => Dispatcher.CurrentDispatcher.BeginInvoke(() => Messages.Add(list[0].ToString()));

I'm having delegate issue with that. Any help?

cannot convert lambda expression to type system.delegate because it is not a delegate type — Mustafa Özgüner, Aug 28 '14 at 17:29
http://stackoverflow.com/questions/14380996/cannot-convert-lambda-expression-to-type-system-delegate-because-it-is-not-a-d — yo chauhan, Aug 28 '14 at 17:33

score 0 · Accepted Answer · answered Aug 28 '14 at 17:32

0

As described in error you are providing lambda expression instead of delegate. Use Action like this:

_dataHub.Subscribe("ReceiveMessage").Received += list => 
             Dispatcher.CurrentDispatcher.BeginInvoke((Action)(() => 
                                         Messages.Add(list[0].ToString())));

answered Aug 28 '14 at 17:32

Rohit Vats

79,502
12
161
185

1

I tried something like that but i must missed something :/ It solved my issue. Thanks! – Mustafa Özgüner Aug 28 '14 at 17:48

Wpf Dispatcher.BeginInvoke delegate issue

1 Answers1