C# winform, TreeView drag drop control

I have a winform, that has 2 TreeViews, source and Destination, on form load it loads files and folder in tree sctructure (all files/folders of given path - like c:\Tree\sample) , user can drag files from source to Destination tree, (Destination tree also preloaded folder location like D:\Projects\). Now user can drag and drop files/folders (one or multiple files) to destination tree in any of the folder, and he click process. A event should give selected flle's source and detination path in a object. I can share source code that preloads Source treeview, user can drag and drop the file in destination tree with same folder structure. but now we need to have option to copy file above explanined way.