public Process MyProcess()
{
    Process currProc = Process.GetCurrentProcess();
    Process[] procs = Process.GetProcessesByName(currProc.ProcessName);
    foreach (Process p in procs)
    {
        if (p.Id != currProc.Id && p.MainModule.FileName == currProc.MainModule.FileName && p.SessionId == currProc.SessionId)
            return p;
    }
    return null;
}