SharePoint Content type folder tree

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Hi all,

I have a single custom list and two content type with some fields.Dynamically how can I add child node in a selected treeview parent node.

Update
Hi Manas,
I have a single ManageGroup list with two folder content type.I have added three site column in each folder content type.Suppose, i have selected parent folder content type or child folder content type, that value is going to add in ManageGroup list. I am able to populate list item in a treeview.

Parent Node - Banglore Group
Child Node - Banglore SubGroup
Now, my question , suppose i have seleted Banglore Group, then Banglore SubGroup should be add under the Banglore Group.

Any solution plz?