how to get list of all directories and folders from local system and from n/w system

 Hi all
I have three  things

1)how to get list of all directories  and folders  , relates subfolders from local system
2)I have a textbox and a treeview control
when i enter a  N/w system path ex: \\SystemName\C:\
and press a button i want to  load treeview with   all folders and  sub folders in C: drive

3) how to copy  a local system folder to   N/w system
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