Question

如何通过C#修改计算机系统时间

Answer 1

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;
namespace 获取和设置系统时间
{
	/// <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);
		}
	}
}