Wpf – Drag and drop a file into application window using WPF and data binding

c#-4.0data-bindingdrag and dropwpf

I'd like to be able to drag and drop a file (e.g. from Desktop or Explorer) right into the main window of a WPF application.

I also want no code behind, i.e. I want to use data binding.

So far I tested the "gong-wpf-dragdrop" which doesn't seem to support drag targets outside the application.

I could drop a file to the main window and the drag and drop events fired – but the data was empty (dragged a non-empty text file).

EDIT: gong-wpf-dragdrop works (after a small fix) and the problem also occurred when using code behind.

So the complete solution was to use gong wpf (github) and the solution presented by Omribitan.

Best Answer

have you tried GetFileDropList method? you can retreive it from the e.Data in the Drop event.

Something like:

string filename = (string)((DataObject)e.Data).GetFileDropList()[0];

Related Solutions

C# – Drag and drop to Desktop / Explorer

DragDrop.DoDragDrop can do this as long as you pass it an appropriate DataObject.

First copy the files somewhere. You can use System.IO.Path.GetTempPath() if you don't have anywhere better.

Next create a string array containing the full paths to the files and do the following:

string[] paths = ...;
DragDrop.DoDragDrop(this, new DataObject(DataFormats.FileDrop, paths),
                    DragDropEffects.Copy);

It is actually possible to do this without pre-copying the files but that gets into some complicated IDataObject interactions, so unless your files are potentially very large and aren't already in the filesystem I would try this method first.

C# – Page vs Window in WPF

Pages are intended for use in Navigation applications (usually with Back and Forward buttons, e.g. Internet Explorer). Pages must be hosted in a NavigationWindow or a Frame

Windows are just normal WPF application Windows, but can host Pages via a Frame container

Best Answer

Related Solutions

C# – Drag and drop to Desktop / Explorer

C# – Page vs Window in WPF

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