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);