Sometimes when performing ajax databinding with the MVC grid you may end up with unexpected result: server error 500. What is even stranger is that server-side binding works as expected with the same data binding code. Let’s demystify this problem: The problem You will see the following if you use FireBug or Fiddler to inspect the response: The error message is “A circular reference was detected while serializing an object of type” followed by some type. If you google this up you will find out that this exception is thrown by the JavaScriptSerializer class because of circular references detected. “What the heck is a...