Help with designing a form

I want to use a开发者_开发百科 TreeView and design a form similar to the following image:

Details:

• user select item group from treeview (treeview content checkbox).
• After check each group from treeview items in this group fetch from SqlServer DB and show in the ListBox and when unchecked remove items from ListBox.

What is the best way to design this form?

Do you have hierarchy in the data?

If not it would be better to have both listboxes one listbox displaying the all available data and the other displaying the subscribed / added data.

You could also put two buttons one "Add" and another "Remove" at the center (between the listboxes). "Add" would move the data from "Available List" to "Added List" and "Remove" would remove the data from "Added List" and add it to the "Available List".