Detect File Read in C#

Question

I\'m using FileSystemWatcher to check when a file is modified or deleted, but I\'m wondering if there is any way to check when a file is read by another application.

Answer 1

A little snippet that I found useful for detecting when another process has a lock:

 static bool IsFileUsedbyAnotherProcess(string filename) 
        { 
            try 
            { 
                using(var file = File.Open(filename, FileMode.Open, FileAccess.Read, FileShare.None))
                {
                }
            } 
            catch (System.IO.IOException exp) 
            { 
                return true; 
            } 
            return false; 
        }