VB.net 2010 视频教程 VB.net 2010 视频教程 VB.net 2010 视频教程
当前位置:
> 编程开发 > c#教程 >
  • C#教程之C#实现关机重启及注销实例代码

  • 2018-06-04 09:42 来源:未知

本文所述的C#实例代码是一个基于Visual C#2010编写的关机、重启、注销程序,类似的C#程序网上还有不少,每个人的写法都各有不同,这段程序供新手参考下。本代码中还用到了一个计时器,用来显示系统运行的时间,以下为完整实例代码:

?
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
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函数返回当前进程的一个句柄
 public static extern IntPtr GetCurrentProcess();
 [DllImport("advapi32.dll", ExactSpelling=true, SetLastError=true)]
  // OpenProcessToken函数打开一个进程的访问代号
 public static extern bool OpenProcessToken(IntPtr ProcessHandles, int DesiredAccess, ref IntPtr TokenHandle);
 [DllImport("advapi32.dll", SetLastError=true)]
  // LookupPrivilegeValue函数获得本地唯一的标示符(LUID),用于在特定的系统中
  // 表示特定的优先权。
 public static extern bool LookupPrivilegeValue(string lpSystemName, string lpName, ref long lpLuid);
 // AdjustTokenPrivileges函数允许或者禁用指定访问记号的优先权。
 // 允许或者禁用优先权需要TOKEN_ADJUST_PRIVILEGES访问权限。
 [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函数可以注销,关机或者重新启动系统
 [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;   // 注销
 private const int EWX_SHUTDOWN = 0x00000001;  // 关机
 private const int EWX_REBOOT = 0x00000002;   // 重启
 private const int EWX_FORCE = 0x00000004;
 private static void RebootCommand(int flg)
 {
  bool ok;
  TokPriv1Luid tp;
  IntPtr hproc = GetCurrentProcess(); // 得到当前的进程
  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 窗体设计器生成的代码
 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 = "系统已运行时间";
  //
  // 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 = "关闭系统";
  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 = "注销系统";
  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 = "重启系统";
  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 = "简单的关机程序";
  this.Load += new System.EventHandler(this.Form1_Load);
  this.groupBox1.ResumeLayout(false);
  this.ResumeLayout(false);
 }
 #endregion
 /// <summary>
 /// 应用程序的主入口点。
 /// </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() + "分钟";
  // 每1秒钟更新一次TextBox上显示的系统运行时间
  timer = new System.Threading.Timer(new TimerCallback(OnTimer), null, 0, 1000);
 }
 // 获得系统已运行的时间
 private void OnTimer(object state)
 {
  textBox1.Text = (Environment.TickCount / (1000 * 60)).ToString() + "分钟";
  textBox1.Refresh();
 }
 }
}

相关教程
关于我们--广告服务--免责声明--本站帮助-友情链接--版权声明--联系我们       黑ICP备07002182号