title: control.DrawToBitmap() not working as expected
body: <p>in Winform application, i have a user control; on which shapes like rectangle,circle etc. are drawn. 
  i am trying to take snapshot of the same by using DrawToBitmap() method.
  i have a Bitmap of fixed size(300 x 300) and user control is of size (600 x 800)
  so the taken snapshot contains only part of the user control.</p>
  
  <p>how to get the snapshot of entire user control in the bitmap ? 
  thanks in advance.</p>