In my WPF application I have a DataGrid. I have successfully implemented Drag&Drop functionality. I can drop any file into it without any problems. I then created Setup file for my application using Visual Studio Installer. When I install my application (even on the same computer) Drag&Drop no longer works. I found out that PreviewDragOver event is not firing, AllowDrop is set to true.
Do you have any idea why or any suggestion?