C#顯示及隱藏任務欄

private const int SW_HIDE = 0; //隱藏任務欄
        private const int SW_RESTORE = 9;//顯示任務欄

        [DllImport("user32.dll")]
        public static extern int ShowWindow(int hwnd, int nCmdShow);
        [DllImport("user32.dll")]
        public static extern int FindWindow(string lpClassName, string lpWindowName);

        /// <summary>
        /// 顯示任務欄
        /// </summary>
        public static void showtask()
        {
            ShowWindow(FindWindow("Shell_TrayWnd", null), SW_RESTORE);
        }
        /// <summary>
        /// 隱藏任務欄
        /// </summary>
        public static void Hidetask()
        {
            ShowWindow(FindWindow("Shell_TrayWnd", null), SW_HIDE);
        }