Why InvokeRequired property value differed between VS2012 and VS2013?

I am developing UI automation for my control. The below code working fine in VS2012.

MyControl.PointToClient(p);

But this code not working in VS2013. It was throws an following exception 

Also i have used the below code to Invoke the control

public new Point PointToClient(Point p)
{
   if (MyControl.InvokeRequired)
   {
       pointToClientCallBack ptcb = new pointToClientCallBack(PointToClient);
       GetWindow().Invoke(ptcb, new object[] { p });
   }
   return MyControl.PointToClient(p);
}
delegate Point pointToClientCallBack(Point p);

after i invoked my control, InvokeRequired property is in true.

So, can you please suggest me the right way to solve this problem.

Thanks,