Eventwatcher for opening multiple excel file.

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C#3.5

system

EventArgs

We Have created the the eventwatcher functionality which is track the window open event its works when open the any first file with same application but when i open it the second file then that time it will not fire. for e.g. i have two excel file A.xls and B.xls when i open A.xls its works fine and after i open B.xls the it was not work.

<pre lang="c#">public void WatchForProcessStart()
        {
            string queryString =
                "SELECT TargetInstance" +
                "  FROM __InstanceCreationEvent " +
                "WITHIN  .025 " +
                " WHERE TargetInstance ISA 'Win32_Process' "
                + "   AND TargetInstance.Name like '%'";

            // The dot in the scope means use the current machine
            string scope = @"\\.\root\CIMV2";

            // Create a watcher and listen for events
            startProcWatcher = new ManagementEventWatcher(scope, queryString);
            startProcWatcher.EventArrived += ProcessStarted;
            startProcWatcher.Start();            
        }


startProcWatcher.EventArrived += ProcessStarted;

private void ProcessStarted(object sender, EventArrivedEventArgs e)
{
      string eventType = e.NewEvent.ClassPath.ClassName;
      if(eventType=="__InstanceCreationEvent")
      {
         Console.WriteLine("Event arrived");
      }

}


The above code is working when i open first excel file but when i open another excel file then that time this code is not working. 

Thanks in Advance.

What I have tried:

i have tried with __ModifiedCreationEvent but it will occur continues. please suggest what to do for it.