显示和隐藏系统任务栏的类

 public static class WinTask
    {
        private const int SW_HIDE = 0;//API参数表示隐藏窗口 
        private const int SW_SHOW = 5;//API参数表示用当前的大小和位置显示窗口

        [DllImport("user32.dll")]
        private static extern int FindWindow(string ClassName, string WindowName);
        [DllImport("user32.dll")]
        private static extern int ShowWindow(int handle, int cmdShow);
       /// <summary>
       /// 显示
       /// </summary>
        public static void ShowTaskBar()
        {
            ShowWindow(FindWindow("Shell_TrayWnd", null), SW_SHOW);
        }
       /// <summary>
       /// 隐藏
       /// </summary>
        public static void HideTaskBar()
        {
            ShowWindow(FindWindow("Shell_TrayWnd", null), SW_HIDE);
        }
    }

 这样写完后任务栏是隐藏了，但是开始按钮还在，解决方案把任务栏设为自动隐藏就可以啦