title: Windows forms and XNA - Draw is not realtime
body: <p>I am currently working on a Level Editor for XNA which is built by combining Windows Forms and XNA.
  I am using stuff from the example on App Hub <a href="http://create.msdn.com/en-US/education/catalog/sample/winforms_series_1" rel="nofollow">link text</a>, but I have made some changes, so I have some ViewportController class which manages all the viewport controls, instead of the form manages them directly.
  The problem is that when I need to update the Draw method I have to shake the window.
  Anybody knows how to fix this, so the Draw will update realtime?</p>