Drag & Drop in WPF

Drag & Drop can greatly improve the usability of software. Yet only a few developers add this functionality to their applications, because they think it's harder than it really is. This article shows how easy it is to implement Drag & Drop in WPF. Drag & Drop in 6 steps:

1. detect the start of a drag with the MouseMove and MouseLeftButtonDown events;
2. determine the data you want to "drag" and create a DataObject that holds the format and the data;
3. start the drag by calling DoDragDrop();
4. set AllowDrop=true on the elements that will accept the data;
5. add a DragEnter event handler to detect that something is being "dragged" over the "drop target". If the data can be accepted, set the Effect property of the event handler's argument;
6. when the user releases the mouse button, the Drop event fires. You can get the data with the e.Data.GetData() method

That's all the magic there is.