C#教程之C#实现修改系统时间的方法

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C#教程之C#实现修改系统时间的方法
SetLocalTime(ref systemTime)设置为用户指定的时间。本代码编译后会有一个易于操作的窗体。
完整功能代码如下：
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								using System;

								using System.Drawing;

								using System.Collections;

								using System.ComponentModel;

								using System.Windows.Forms;

								using System.Data;

								using System.Runtime.InteropServices;

								namespace changesystime

								{

								 /// <summary>

								 /// Form1 的摘要说明。

								 /// </summary>

								 public class Form1 : System.Windows.Forms.Form

								 {

								 private System.Windows.Forms.GroupBox groupBox1;

								 private System.Windows.Forms.TextBox textBox1;

								 private System.Windows.Forms.GroupBox groupBox2;

								 private System.Windows.Forms.Button button1;

								 private System.Windows.Forms.Button button2;

								 private System.Timers.Timer timer1;

								 private System.Windows.Forms.DateTimePicker setDate;

								 private System.Windows.Forms.DateTimePicker setTime;

								 private System.ComponentModel.IContainer components;

								 [StructLayout(LayoutKind.Sequential)]

								 public struct SystemTime

								 {

								  public ushort wYear;

								  public ushort wMonth;

								  public ushort wDayOfWeek;

								  public ushort wDay;

								  public ushort wHour;

								  public ushort wMinute;

								  public ushort wSecond;

								  public ushort wMiliseconds;

								 }

								 // 用于设置系统时间

								 [DllImport("Kernel32.dll")]

								 public static extern bool SetLocalTime( ref SystemTime sysTime );

								 // 用于获得系统时间

								 [DllImport("Kernel32.dll")]

								 public static extern void GetLocalTime(ref SystemTime sysTime);

								 public Form1()

								 {

								  //

								  // Windows 窗体设计器支持所必需的

								  //

								  InitializeComponent();

								  //

								  // TODO: 在 InitializeComponent 调用后添加任何构造函数代码

								  //

								 }

								 /// <summary>

								 /// 清理所有正在使用的资源。

								 /// </summary>

								 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

								 /// <summary>

								 /// 设计器支持所需的方法 - 不要使用代码编辑器修改

								 /// 此方法的内容。

								 /// </summary>

								 private void InitializeComponent()

								 {

								  this.groupBox1 = new System.Windows.Forms.GroupBox();

								  this.textBox1 = new System.Windows.Forms.TextBox();

								  this.groupBox2 = new System.Windows.Forms.GroupBox();

								  this.setTime = new System.Windows.Forms.DateTimePicker();

								  this.setDate = new System.Windows.Forms.DateTimePicker();

								  this.button1 = new System.Windows.Forms.Button();

								  this.button2 = new System.Windows.Forms.Button();

								  this.timer1 = new System.Timers.Timer();

								  this.groupBox1.SuspendLayout();

								  this.groupBox2.SuspendLayout();

								  ((System.ComponentModel.ISupportInitialize)(this.timer1)).BeginInit();

								  this.SuspendLayout();

								  // 

								  // groupBox1

								  // 

								  this.groupBox1.Controls.Add(this.textBox1);

								  this.groupBox1.Location = new System.Drawing.Point(32, 24);

								  this.groupBox1.Name = "groupBox1";

								  this.groupBox1.Size = new System.Drawing.Size(216, 64);

								  this.groupBox1.TabIndex = 0;

								  this.groupBox1.TabStop = false;

								  this.groupBox1.Text = "系统当前时间";

								  // 

								  // textBox1

								  // 

								  this.textBox1.Location = new System.Drawing.Point(16, 24);

								  this.textBox1.Name = "textBox1";

								  this.textBox1.ReadOnly = true;

								  this.textBox1.Size = new System.Drawing.Size(184, 21);

								  this.textBox1.TabIndex = 1;

								  this.textBox1.Text = "";

								  // 

								  // groupBox2

								  // 

								  this.groupBox2.Controls.Add(this.setTime);

								  this.groupBox2.Controls.Add(this.setDate);

								  this.groupBox2.Location = new System.Drawing.Point(32, 112);

								  this.groupBox2.Name = "groupBox2";

								  this.groupBox2.Size = new System.Drawing.Size(216, 64);

								  this.groupBox2.TabIndex = 1;

								  this.groupBox2.TabStop = false;

								  this.groupBox2.Text = "时间设置为";

								  // 

								  // setTime

								  // 

								  this.setTime.Format = System.Windows.Forms.DateTimePickerFormat.Time;

								  this.setTime.Location = new System.Drawing.Point(128, 24);

								  this.setTime.Name = "setTime";

								  this.setTime.ShowUpDown = true;

								  this.setTime.Size = new System.Drawing.Size(72, 21);

								  this.setTime.TabIndex = 1;

								  this.setTime.TabStop = false;

								  // 

								  // setDate

								  // 

								  this.setDate.Format = System.Windows.Forms.DateTimePickerFormat.Short;

								  this.setDate.Location = new System.Drawing.Point(8, 24);

								  this.setDate.Name = "setDate";

								  this.setDate.Size = new System.Drawing.Size(104, 21);

								  this.setDate.TabIndex = 0;

								  // 

								  // button1

								  // 

								  this.button1.Location = new System.Drawing.Point(40, 200);

								  this.button1.Name = "button1";

								  this.button1.Size = new System.Drawing.Size(64, 32);

								  this.button1.TabIndex = 2;

								  this.button1.Text = "设置";

								  this.button1.Click += new System.EventHandler(this.button1_Click);

								  // 

								  // button2

								  // 

								  this.button2.Location = new System.Drawing.Point(168, 200);

								  this.button2.Name = "button2";

								  this.button2.Size = new System.Drawing.Size(64, 32);

								  this.button2.TabIndex = 3;

								  this.button2.Text = "退出";

								  this.button2.Click += new System.EventHandler(this.button2_Click);

								  // 

								  // timer1

								  // 

								  this.timer1.Enabled = true;

								  this.timer1.SynchronizingObject = this;

								  this.timer1.Elapsed += new System.Timers.ElapsedEventHandler(this.timer1_Elapsed);

								  // 

								  // Form1

								  // 

								  this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);

								  this.ClientSize = new System.Drawing.Size(280, 261);

								  this.Controls.Add(this.button2);

								  this.Controls.Add(this.button1);

								  this.Controls.Add(this.groupBox2);

								  this.Controls.Add(this.groupBox1);

								  this.Name = "Form1";

								  this.Text = "获取和设置系统时间";

								  this.groupBox1.ResumeLayout(false);

								  this.groupBox2.ResumeLayout(false);

								  ((System.ComponentModel.ISupportInitialize)(this.timer1)).EndInit();

								  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 button2_Click(object sender, System.EventArgs e)

								 {

								  this.Close(); // 关闭当前窗体

								 }

								 private void timer1_Elapsed(object sender, System.Timers.ElapsedEventArgs e)

								 {

								  // 清除textBox1上的字符串

								  textBox1.Clear();

								  // 创建SystemTime结构体，用于接收系统当前时间

								  SystemTime systemTime = new SystemTime();

								  GetLocalTime(ref systemTime); // 获得系统的时间并存在SystemTime结构体中

								  // 将系统的时间从 SystemTime 结构体中中取出，并显示在textBox1上

								  textBox1.Text += systemTime.wYear.ToString() +"-";

								  textBox1.Text += systemTime.wMonth.ToString() + "-";

								  textBox1.Text += systemTime.wDay.ToString() + " ";

								  textBox1.Text += systemTime.wHour.ToString() + ":";

								  textBox1.Text += systemTime.wMinute.ToString() + ":";

								  textBox1.Text += systemTime.wSecond.ToString();

								 // textBox1.Refresh(); 

								 }

								 private void button1_Click(object sender, System.EventArgs e)

								 {

								  // 创建SystemTime结构体，用于接收用户设置的时间

								  SystemTime systemTime = new SystemTime();

								  // 从setDate,setTime控件中获取年，月，日，小时，分钟，秒信息，存入SystemTime结构体中

								      systemTime.wYear = (ushort)setDate.Value.Year;

								  systemTime.wMonth = (ushort)setDate.Value.Month;

								  systemTime.wDay = (ushort)setDate.Value.Day;

								  systemTime.wHour = (ushort)setTime.Value.Hour;

								  systemTime.wMinute = (ushort)setTime.Value.Minute;

								  systemTime.wSecond = (ushort)setTime.Value.Second;

								  // 将系统的时间设置为用户指定的时间

								  SetLocalTime(ref systemTime);

								 }

								 }

								}
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