本文所述的C#實(shí)例代碼是一個(gè)基于Visual C#2010編寫(xiě)的關(guān)機(jī)、重啟、注銷(xiāo)程序,類(lèi)似的C#程序網(wǎng)上還有不少,每個(gè)人的寫(xiě)法都各有不同,這段程序供新手參考下。本代碼中還用到了一個(gè)計(jì)時(shí)器,用來(lái)顯示系統(tǒng)運(yùn)行的時(shí)間,以下為完整實(shí)例代碼:
using System;using System.Drawing;using System.Collections;using System.ComponentModel;using System.Windows.Forms;using System.Data;using System.Runtime.InteropServices;using System.Threading;namespace shutdowncodes{ public class Form1 : System.Windows.Forms.Form { private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Button button2; private System.Windows.Forms.Button button3; private System.ComponentModel.IContainer components; [StructLayout(LayoutKind.Sequential, Pack=1)] public struct TokPriv1Luid { public int Count; public long Luid; public int Attr; } [DllImport("kernel32.dll", ExactSpelling=true)] // GetCurrentProcess函數(shù)返回當(dāng)前進(jìn)程的一個(gè)句柄 public static extern IntPtr GetCurrentProcess(); [DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true)] // OpenProcessToken函數(shù)打開(kāi)一個(gè)進(jìn)程的訪問(wèn)代號(hào) public static extern bool OpenProcessToken(IntPtr ProcessHandles, int DesiredAccess, ref IntPtr TokenHandle); [DllImport("advapi32.dll", SetLastError=true)] // LookupPrivilegeValue函數(shù)獲得本地唯一的標(biāo)示符(LUID),用于在特定的系統(tǒng)中 // 表示特定的優(yōu)先權(quán)。 public static extern bool LookupPrivilegeValue(string lpSystemName, string lpName, ref long lpLuid); // AdjustTokenPrivileges函數(shù)允許或者禁用指定訪問(wèn)記號(hào)的優(yōu)先權(quán)。 // 允許或者禁用優(yōu)先權(quán)需要TOKEN_ADJUST_PRIVILEGES訪問(wèn)權(quán)限。 [DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true)] public static extern bool AdjustTokenPrivileges(IntPtr TokenHandle, bool DisableAllPrivileges, ref TokPriv1Luid NewState, int BufferLength, IntPtr PreviousState,IntPtr ReturnLength); // ExitWindowsEx函數(shù)可以注銷(xiāo),關(guān)機(jī)或者重新啟動(dòng)系統(tǒng) [DllImport("user32.dll", ExactSpelling=true, SetLastError=true)] public static extern bool ExitWindowsEx(int flg, int rea); private System.Threading.Timer timer; private const int SE_PRIVILEGE_ENABLED = 0x00000002; private const int TOKEN_QUERY = 0x00000008; private const int TOKEN_ADJUST_PRIVILEGES = 0x00000020; private const string SE_SHUTDOWN_NAME = "SeShutdownPrivilege"; private const int EWX_LOGOFF = 0x00000000; // 注銷(xiāo) private const int EWX_SHUTDOWN = 0x00000001; // 關(guān)機(jī) private const int EWX_REBOOT = 0x00000002; // 重啟 private const int EWX_FORCE = 0x00000004; private static void RebootCommand(int flg) { bool ok; TokPriv1Luid tp; IntPtr hproc = GetCurrentProcess(); // 得到當(dāng)前的進(jìn)程 IntPtr htok = IntPtr.Zero; ok = OpenProcessToken(hproc, TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, ref htok); tp.Count = 1; tp.Luid = 0; tp.Attr = SE_PRIVILEGE_ENABLED; ok = LookupPrivilegeValue(null, SE_SHUTDOWN_NAME, ref tp.Luid); ok = AdjustTokenPrivileges(htok, false, ref tp, 0, IntPtr.Zero, IntPtr.Zero); ok = ExitWindowsEx(flg, 0); } public Form1() { InitializeComponent(); } protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); } #region Windows 窗體設(shè)計(jì)器生成的代碼 private void InitializeComponent() { this.groupBox1 = new System.Windows.Forms.GroupBox(); this.textBox1 = new System.Windows.Forms.TextBox(); this.button1 = new System.Windows.Forms.Button(); this.button2 = new System.Windows.Forms.Button(); this.button3 = new System.Windows.Forms.Button(); this.groupBox1.SuspendLayout(); this.SuspendLayout(); // // groupBox1 // this.groupBox1.Controls.Add(this.textBox1); this.groupBox1.Location = new System.Drawing.Point(48, 24); this.groupBox1.Name = "groupBox1"; this.groupBox1.Size = new System.Drawing.Size(192, 56); this.groupBox1.TabIndex = 0; this.groupBox1.TabStop = false; this.groupBox1.Text = "系統(tǒng)已運(yùn)行時(shí)間"; // // textBox1 // this.textBox1.Location = new System.Drawing.Point(24, 24); this.textBox1.Name = "textBox1"; this.textBox1.ReadOnly = true; this.textBox1.Size = new System.Drawing.Size(152, 21); this.textBox1.TabIndex = 1; this.textBox1.Text = ""; // // button1 // this.button1.Location = new System.Drawing.Point(16, 112); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(64, 32); this.button1.TabIndex = 1; this.button1.Text = "關(guān)閉系統(tǒng)"; this.button1.Click += new System.EventHandler(this.button1_Click); // // button2 // this.button2.Location = new System.Drawing.Point(112, 112); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(64, 32); this.button2.TabIndex = 2; this.button2.Text = "注銷(xiāo)系統(tǒng)"; this.button2.Click += new System.EventHandler(this.button2_Click); // // button3 // this.button3.Location = new System.Drawing.Point(208, 112); this.button3.Name = "button3"; this.button3.Size = new System.Drawing.Size(64, 32); this.button3.TabIndex = 3; this.button3.Text = "重啟系統(tǒng)"; this.button3.Click += new System.EventHandler(this.button3_Click); // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(296, 173); this.Controls.Add(this.button3); this.Controls.Add(this.button2); this.Controls.Add(this.button1); this.Controls.Add(this.groupBox1); this.Name = "Form1"; this.Text = "簡(jiǎn)單的關(guān)機(jī)程序"; this.Load += new System.EventHandler(this.Form1_Load); this.groupBox1.ResumeLayout(false); this.ResumeLayout(false); } #endregion /// <summary> /// 應(yīng)用程序的主入口點(diǎn)。 /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); } private void button1_Click(object sender, System.EventArgs e) { RebootCommand(EWX_SHUTDOWN + EWX_FORCE); } private void button2_Click(object sender, System.EventArgs e) { RebootCommand(EWX_LOGOFF + EWX_FORCE); } private void button3_Click(object sender, System.EventArgs e) { RebootCommand(EWX_REBOOT + EWX_FORCE); } private void Form1_Load(object sender, System.EventArgs e) { textBox1.Text = (Environment.TickCount / (1000 * 60)).ToString() + "分鐘"; // 每1秒鐘更新一次TextBox上顯示的系統(tǒng)運(yùn)行時(shí)間 timer = new System.Threading.Timer(new TimerCallback(OnTimer), null, 0, 1000); } // 獲得系統(tǒng)已運(yùn)行的時(shí)間 private void OnTimer(object state) { textBox1.Text = (Environment.TickCount / (1000 * 60)).ToString() + "分鐘"; textBox1.Refresh(); } }}
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