Question

This is how I do it at the moment. I try to open the file with the FileShare set to none. So I want exclusive accesss to the file. If I can’t get that then its a good bet somebody else has the file locked.

There’s got to be a better and faster way. Any ideas?

            try             {                 using (FileStream fs = File.Open(GetLockFilename(), FileMode.Open, FileAccess.ReadWrite, FileShare.None))                 {                     fs.Close();                 }                 // The file is not locked             }             catch (Exception)             {                 // The file is locked             } 

Answer 1

There is no need first to check if the file is locked and then access it, as between the check and the access some other process may still get a lock on the file. So, what you do is correct, if you succeed, do your work with the file.