We have 2 objects that have circular references.
I know that the garbage collector is supposed to detect circular references,
but I'm not sure it also does that in our situation.

Let me explain our setup:

We have a custom control (A) that creates an DragAndDrop (B) object, and
passes itself with it.

This DragAndDrop object keeps a reference to the control it is bound to.  (B
references A)
It also adds delegates to its own methods to the DragDrop, DragEnter and
DragOver eventhandlers of the control (A references B)

<<example code>>
public class SomeControl : Control
{

 public SomeControl() : base()
 {
    DragAndDrop temp = new DragAndDrop(this);
 }
}

public class DragAndDrop
{
   private Control control;

  public DragAndDrop(Control control)
  {
       this.control = control;
       this.control.DragDrop += new
System.Windows.Forms.DragEventHandler(this.DragDrop);
       this.control.DragEnter += new
System.Windows.Forms.DragEventHandler(this.DragEnter);
       this.control.DragOver += new
System.Windows.Forms.DragEventHandler(this.DragOver);
   }

    private void DragOver(object sender, System.Windows.Forms.DragEventArgs
e)
   {
       //does something usefull
    }

    private void DragEnter(object sender,
System.Windows.Forms.DragEventArgs e)
   {
       //does something usefull
    }

    private void DragDrop(object sender, System.Windows.Forms.DragEventArgs
e)
   {
       //does something usefull
    }
}

I have 2 questions:

1) Will the garbage collector cleanup the SomeControl and DragAndDrop
instances when the form containing the control is closed and destroyed?
2) If it does, is it OK then that the control doesn't keep a reference to
the created DragAndDrop object?  Wouldn't this cause the DragAndDrop object
to be garbage collected immidiately?

Thanks in advance,

Marc Selis
Soft Cell nv