private const int SW_HIDE = 0; //隐藏任务栏        private const int SW_RESTORE = 9;//显示任务栏        [DllImport("user32.dll")]        public static extern int ShowWindow(int hwnd, int nCmdShow);        [DllImport("user32.dll")]        public static extern int FindWindow(string lpClassName, string lpWindowName);        /// 
        /// 显示任务栏        /// 
        public static void showtask()        {            ShowWindow(FindWindow("Shell_TrayWnd", null), SW_RESTORE);        }        /// 
        /// 隐藏任务栏        /// 
        public static void Hidetask()        {            ShowWindow(FindWindow("Shell_TrayWnd", null), SW_HIDE);        }