title: Is there a Form.Showdialog equivalent for Gtk# Windows?
body: <p>Using Windows Forms or WPF I can open a dialog window by calling ShowDialog. How can I do that using Gtk#?</p>
  
  <p>I tried just making the Window modal, but although it prevents the user from interacting with the calling window it does not wait for the user to close the dialog before running the code after ShowAll().</p>