title: What is the difference between System.Drawing.Image and System.Drawing.Bitmap?
body: <p>I am confused what's the different between <code>System.Drawing.Image</code> and <code>System.Drawing.Bitmap</code></p>
  
  <p>Can someone explain the major difference between those two types ? </p>
  
  <p>And Why to use System.Drawing.Bitmap instead of System.Drawing.Image ?</p>