C# WinForms - Drag Drop TreeView in VS 2013 Update 3 not work

Question

I Have Winforms and crate drag drop for my tree view using Drag Drop Sample in code project.
this worked before I upgrade my project to VS 2013 update 3 but when project upgrade to VS 2013 I can not start drag in tree view.
I so confused for this complicated problem
Please help me.

Answer 1

Please check this steps:

1. You must first set AllowDrop=true;
2. Set Event ItemDrag
3. Set Event DragDrop
4. Set Event DragEnter
5. Set Event DragOver

If your tree drag drop worked before and now not work I think it must be for your data structure that checked in DragDrop Event or some other event of drag drop