On Jan 3, 8:05 am, "Bob Powell [MVP]" <b...@spamkillerbobpowell.net>
wrote:

Thanks for the reply Bob.  I tried removing the asterisks, but the
problem persisted.  I'm certain this has something to do with me
disposing the Image objects incorrectly because it works fine when I
remove my disposing code.  For example, my Image property on the child
control (which derives from Component) is:

public Image Graphic
{
  get
  {
     return _Graphic;
  }
  set
  {
     if (!this.DesignMode)
     {
        // Dispose any previous graphic
        if (null != _Graphic)
        {
           _Graphic.Dispose();
           _Graphic = null;
        }
     }

     _Graphic = value;

     // Notify the container to redraw
     if (null != this.TaskPanel)
     {
        this.TaskPanel.Invalidate();
     }
  }
}

If I comment out the check for DesignMode, the control will start
breaking in the using project when I rebuild the control project.  I
assume this is because I'm disposing resources held by the Resource
Manager in the using app.  I also assume that I should be disposing
the Image objects explicitly at runtime as shown in my code above.

Hopefully this makes sense.  Please let me know if you have any more
insight into this behavior.  Cheers!