This little Drag & Drop Demo shows how you can modify the DataObject during a Drag & Drop operation. This is very useful if you want to provide a user interaction before you do the final drop into the destination. A good use for this would be the creation of a toolbox to add items to a destination (form, listbox, grid, etc.) where you want to customize (give a name, additional configurations, etc.) before you drop them.
Modifying DataObject During Drag & Drop Operation - CodeProject
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