I don't think this is a trivial task but i have a basic idea what my approach would be.
You really need to tell us where your problem is.
1. You need to be able to connect two nodes.
2. You need to drag and drop those nodes.
3. you need to draw a line.
Which of those steps is giving you headaches?
Joined: Jan 15, 2013
I am able to create a treeview with tree items.
Now i am facing difficulty in capturing the drop event on the tree item. In the below snippet not able to capture the drop event