[Flags]
        public enum ThreadAccess : int
        {
            TERMINATE = (0x0001),
            SUSPEND_RESUME = (0x0002),
            GET_CONTEXT = (0x0008),
            SET_CONTEXT = (0x0010),
            SET_INFORMATION = (0x0020),
            QUERY_INFORMATION = (0x0040),
            SET_THREAD_TOKEN = (0x0080),
            IMPERSONATE = (0x0100),
            DIRECT_IMPERSONATION = (0x0200)
        }
        [DllImport("kernel32.dll", SetLastError = true)]
        static extern IntPtr OpenThread(ThreadAccess dwDesiredAccess, bool bInheritHandle,
        uint dwThreadId);
        [DllImport("kernel32.dll")]
        static extern bool TerminateThread(IntPtr hThread, uint dwExitCode);

        private static void TerminateThreadByName(string name, int UserProcessorTimeMinutes)
        {
            Process[] ps = Process.GetProcessesByName(name);
            foreach (Process process in ps)
            {
                foreach (ProcessThread thread in process.Threads)
                {
                    if (thread.UserProcessorTime > TimeSpan.FromMinutes(UserProcessorTimeMinutes))
                    {
                        IntPtr handle =
                             OpenThread(
                           ThreadAccess.TERMINATE,
                           false,
                           (uint)thread.Id);
                        TerminateThread(handle, 0);
                    }
                }
            }
        }