Comments by Zubin 2 (Top 2 by date)

No, i am not accepting the solution based on Shell Context Menu because context menu will not provide me the prevention of cutting and copying a file of particular type(also you have told me in your valuable reply--thanking you for that).

Thus, I focused on
1> Manipulating clipboard for when user select cut/copy from context menu
2> Manipulating IDataObject object for dragged scenario.

I have implemented manipulation of clipboard successfully.
I have almost done to cover up dragged scenario with little problem as i documented at codeproject with subject:"Is there any documented way to filter dragged data?"

kindly read it.

Thanking you for your interest in solving my problem.