Watch who is using a shared file

When you have a slow desktop and someone is using your shared files then your pc will slow down. This is very disturbing and to close this you have to find which file is being used by whom.In order see who is using your shared file
1.Go to start > Run
2.Type compmgmt.msc
3.Computer Management window will open
Or you can find "Computer Management" in Control panel>adminidtrative tools
4.Under 'System Tools' expand 'Shared Folders'
5. Go to 'Open Files' That lists all the files in use by network users, right click on them and click 'Close Open File' to close it! Please leave a comment.