C#簡單實現關閉計算機、注銷和重啟電腦的代碼

C#演示如何關閉電腦、重啟電腦、注銷計算機的代碼，此前記得發過類似的代碼，這一個代碼里包括了豐富的注釋，或許是C#新手比較喜歡的：

namespace LCRComputer
{
    public partial class Frm_Main : Form
    {
        public Frm_Main()
        {
            InitializeComponent();
        }
        [DllImport("user32.dll", EntryPoint = "ExitWindowsEx", CharSet = CharSet.Ansi)]
        //code www.codesc.net
        private static extern int ExitWindowsEx(int uFlags, int dwReserved);
        private void button1_Click(object sender, EventArgs e)
        {
            ExitWindowsEx(0, 0);//注銷計算機
        }
        private void button2_Click(object sender, EventArgs e)
        {
            System.Diagnostics.Process myProcess = new System.Diagnostics.Process();
            myProcess.StartInfo.FileName = "cmd.exe";//啟動cmd命令
            myProcess.StartInfo.UseShellExecute = false;//是否使用系統外殼程序啟動進程
            myProcess.StartInfo.RedirectStandardInput = true;//是否從流中讀取
            myProcess.StartInfo.RedirectStandardOutput = true;//是否寫入流
            myProcess.StartInfo.RedirectStandardError = true;//是否將錯誤信息寫入流
            myProcess.StartInfo.CreateNoWindow = true;//是否在新窗口中啟動進程
            myProcess.Start();//啟動進程
            myProcess.StandardInput.WriteLine("shutdown -s -t 0");//執行關機命令
        }
        private void button3_Click(object sender, EventArgs e)
        {
            System.Diagnostics.Process myProcess = new System.Diagnostics.Process();
            myProcess.StartInfo.FileName = "cmd.exe";//啟動cmd命令
            myProcess.StartInfo.UseShellExecute = false;//是否使用系統外殼程序啟動進程
            myProcess.StartInfo.RedirectStandardInput = true;//是否從流中讀取
            myProcess.StartInfo.RedirectStandardOutput = true;//是否寫入流
            myProcess.StartInfo.RedirectStandardError = true;//是否將錯誤信息寫入流
            myProcess.StartInfo.CreateNoWindow = true;//是否在新窗口中啟動進程
            myProcess.Start();//啟動進程
            myProcess.StandardInput.WriteLine("shutdown -r -t 0");//執行重啟計算機命令
        }
    }
}

完整的源碼例子：C# 注銷、關閉和重啟計算機的簡單完整實例及源碼