C # create controls that can be dragged at will, and drag any controls on the form to the specified position

The main code is as follows:

Point mouse_offset = new point ();

Public mypicture ()
{
This. mousemove + = new mouseeventhandler (common_mousemove );
This. mousedown + = new mouseeventhandler (common_mousedown );
}

Private void common_mousemove (Object sender, mouseeventargs E)
{
Control control = (Control) sender;
// (Control) sender). cursor = cursors. Arrow;
If (E. Button = mousebuttons. Left)
{
// Point mousepos = control. mouseposition;
// Mousepos. offset (mouse_offset.x, mouse_offset.y );
// (Control) sender). Location = (Control) sender). Parent. pointtoclient (mousepos );

Control. Left = control. Left + E. X-mouse_offset.x;
Control. Top = control. Top + E. Y-mouse_offset.y;

}
}
Private void common_mousedown (Object sender, mouseeventargs E)
{
Mouse_offset = new point (E. X, E. y );
}
This code is used.