How to get sharepoint document library folder and files in treeview with checkbox

Hi,

Actually my requirement is, I Should create a Custom web part. I have two filters in it which is 1) Sites 2) Document Library. Based on the filter selection i would like to get a Folders and files from the document library and assign in to Tree View Control with checkbox.

I may select the entire folder or specific selected files to update some values to the corresponding files column.

How should i do it and get a files and folders from doc library to tree view with check box.

Thanks & Regards

Poomani Sankaran