I was able to connect to my hierarchical sql data according to demo
Now I need to transfer the items between two TreeViews, similar to the demo below except for the demo is using ListBoxs:
But I need to keep the hierarchy information during transfer. Say, if the item belongs to group1 in TreeView1, it will also be shown as group1 item in TreeView2 after transfered to TreeView2.
TreeView2 is blank at first, after finished selecting data from TreeView1, I would like to write everything in TreeView2 to database with hierarchy info.
How could I accomplish that?