title: Save Image from user Drawn PictureBox whose SizeMode=stretch in C# winforms
body: <p>Im drawing an image on picture box which is in stretch mode,I translate the mouse coordinates on  the mouse click event by using a function to obtain the real coordinates and draw the image by overriding the on-paint event and using the paint event Graphics.
  Since the picture box is set to stretch i only obtain a small size image when i try to save the image by using <code>picturebox.DrawtoBitmap</code> Function.The extra parts are padded with Black colour.Please help me out.</p>