Modal Dialog not showing on top of other windows

Question

I am using Window.ShowDialog() to open a modal window in my WPF (MVVM) application, but it lets me navigate to other windows using the Windows taskbar (Windows

Answer 1

Just set the owner property of the Window to the calling window. Then the activation of the WPF application in taskbar not just activates the MainWindow but also the modal child window and brings it to the front.

ChildWindow C = new ChildWindow();
C.Owner = this;
C.ShowDialog();