Question

In my WPF application I have created a window and show it as a dialog by calling it by the method ShowDialog(). But when I close the window by Close() method the Unloaded event is not fired for this dialog window.

MyWindow obj = new MyWindow(); 
obj.ShowDialog();
obj.Close();

Answer 1

That’s a known issue.

Use this instead

   yourWindow.Dispatcher.ShutdownStarted += Dispatcher_ShutdownStarted;

   private void Dispatcher_ShutdownStarted( object sender, EventArgs e )
   {
       //do what you want to do on closing
   }

Read this for more details

Edit

If above is not working try this

yourWindow.Closing += new CancelEventHandler(YourWindow_Closing);

void YourWindow_Closing(object sender, CancelEventArgs e)
{

}