Programatically close current window and open new window

Question

hi,
I am in a click event of a button and want to close the current window and open a new window if a condition is met.
else if(MyText.Content=="OpenNew")
newwindow sw = new newwindow();
sw.Dispatcher.Invoke(new Action(() => sw.Show()));
this.Dispatcher.Invoke(new Action(() => this.Close()));
But I always get the System.InvalidOperationException.
Pls help me with this.
Thanks,
Shaleen
TheHexLord

Answer 1

If you are trying to create the window on a new thread, you must set the  ApartmentState of the window to STA as described here:
http://reedcopsey.com/2011/11/28/launching-a-wpf-window-in-a-separate-thread-part-1/
But you should probably just move the creation of the thread and the call to its Show() method on to the UI thread:
else if(MyText.Content=="OpenNew")
this.Dispatcher.Invoke(new Action(() =>
InfoPanel sw = new InfoPanel();
sw.Show();
this.Close();
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