9.17. Use a Drag-and-Drop Operation
Problem
You need to use the drag-and-drop feature to exchange information between two controls (possibly in separate windows or in separate applications).
Solution
Start a drag-and-drop operation using the DoDragDrop method of the Control class, and then respond to the DragEnter and DragDrop events.
How It Works
A drag-and-drop operation allows the user to transfer information from one place to another by clicking an item and dragging it to another location. A drag-and-drop operation consists of the following three basic steps:
The user clicks a control, holds down the mouse button, and begins dragging. If the control supports the drag-and-drop feature, it sets aside some information.
The user drags the mouse ...
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