C#显示与隐藏系统任务栏和开始菜单栏

       private const int SW_HIDE = 0;
       private const int SW_SHOW = 5;

       [DllImportAttribute("user32.dll")]
       private static extern int FindWindow(string ClassName,string WindowName);
       [DllImport("user32.dll")]
       private static extern int ShowWindow(int handle,int cmdShow);

//显示
        private void button3_Click(object sender, EventArgs e)
        {
            ShowWindow(FindWindow("Shell_TrayWnd", null), SW_SHOW);
            ShowWindow(FindWindow("Button", null), SW_SHOW);
        }
//全屏
        private void button2_Click(object sender, EventArgs e)
        {
            ShowWindow(FindWindow("Shell_TrayWnd", null), SW_HIDE);
            ShowWindow(FindWindow("Button", null), SW_HIDE);
        }

说明：

（1）引用了系统API函数，需要引用命名空间
using System.Runtime.InteropServices;

（2）ShowWindow（）参数类型是一些int类型，可以查看MDNS

也可以写成

  ShowWindow(FindWindow("Shell_TrayWnd", null), 0);