title: Passing Objects By Reference or Value in C#
body: <p>In C#, I have always thought that non-primitive variables were passed by reference and primitive values passed by value.</p>
  
  <p>So when passing to a method any non-primitive object, anything done to the object in the method would effect the object being passed. (C# 101 stuff)</p>
  
  <p>However, I have noticed that when I pass a System.Drawing.Image object, that this does not seem to be the case? If I pass a system.drawing.image object to another method, and load an image onto that object, then let that method go out of scope and go back to the calling method, that image is not loaded on the original object?</p>
  
  <p>Why is this?</p>