>>I can't for the life of me see how to start a drag operation in C#. All the Google results I found seem to be for dropping something from Windows into a C# app. What if I just want to drag a user control across the form?
>
>Did you try:
>
>DoDragDrop( myControl, DragDropEffects.Move )
>
>or in control's events:
>
>DoDragDrop( this, DragDropEffects.Move )
>
>Cetin


Ok, so now I have this:

private void XColumnHeader_MouseMove(object sender, MouseEventArgs e)
{
    if (e.Button == MouseButtons.Left)
    {
        DoDragDrop(this, DragDropEffects.Move);
    }
}

As soon as I move the mouse the cursor changes to the no drop icon and the DragDrop event of the target control does not fire.