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Drag&Drop File Copy

Posted on 2005-04-14
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Last Modified: 2010-04-16
Hello,

I want to copy or move files with dragging list entry items or icons to Windows Explorer window. Most of the tutorials and code examples show how to accept dropped items, not how to drop them to the other application windows.

I have found several C++ & Win32 api examples (for an example visit http://www.codeproject.com/shell/explorerdragdrop.asp) but I couldn't succeeded to make a working translation yet.

Can you help me with this?

Thanking in advance...
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Question by:smalkim
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Ceiled earned 900 total points
ID: 13782932
Dragging files onto Explorer is indeed quite complicated, especially in .NET, where objects are somewhat more complicated than simply a structured memory layout. Fortunately, System.Windows.Forms.DataObject has functionality built in especially for this:

string[] fileNames = GetFileNamesToDrag();
DataObject obj = new DataObject(DataFormats.FileDrop, strings);
DoDragDrop(obj, DragDropEffects.Copy);

Obviously, you can use DragDropEffects.Move to move instead of copy. If you specify both (DragDropEffects.Copy | DragDropEffects.Move), then Explorer will automatically determine whether it should move or copy it based on the modifier keys you're holding down (ctrl to copy, shift to move). Hope this helps.
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