There is a folder "Recycle Bin". I want that noboday can delete this folder.

Thanks

Check out isolated storage

http://msdn2.microsoft.com/en-us/library/system.io.isolatedstorage.aspx

We are changing the issue type to “Comment�because you have not followed up with the necessary information. If you have more time to look at the issue and provide more information, please feel free to change the issue type back to “Question�by editing your initial post and changing the radio button at the top of the post editor window. If the issue is resolved, we will appreciate it if you can share the solution so that the answer can be found and used by other community members having similar questions.
Thank you!