在C#中除了调用api和cmd之外还有其它的方法修改系统时间吗
在windows平台上，所有的方法归根结底都是调用api。所谓其它方法，就是把这个调用的过程封装起来，让你不直接去写罢了。
利用WINAPI的public static extern bool SetLocalTime( ref SYSTEMTIME Time)实现public struct SYSTEMTIME{ public ushort wYear; public ushort wMonth; public ushort wDayOfWeek; public......
答案就在这里： C#修改系统时间
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using System;
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using System.Drawing;
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using System.Collections;
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using System.ComponentModel;
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using System.Windows.Forms;
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using System.Data;
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using System.Runtime.InteropServices;
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namespace 获取和设置系统时间
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{
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///
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/// Form1 的摘要说明。
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///
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public class Form1 : System.Windows.Forms.Form
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{
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private System.Windows.Forms.GroupBox groupBox1;
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private System.Windows.Forms.TextBox textBox1;
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private System.Windows.Forms.GroupBox groupBox2;
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private System.Windows.Forms.Button button1;
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private System.Windows.Forms.Button button2;
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private System.Timers.Timer timer1;
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private System.Windows.Forms.DateTimePicker setDate;
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private System.Windows.Forms.DateTimePicker setTime;
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private System.ComponentModel.IContainer components;
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[StructLayout(LayoutKind.Sequential)]
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public struct SystemTime
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{
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public ushort wYear;
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public ushort wMonth;
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public ushort wDayOfWeek;
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public ushort wDay;
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public ushort wHour;
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public ushort wMinute;
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public ushort wSecond;
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public ushort wMiliseconds;
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}
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// 用于设置系统时间
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[DllImport("Kernel32.dll")]
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public static extern bool SetLocalTime( ref SystemTime sysTime );
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// 用于获得系统时间
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[DllImport("Kernel32.dll")]
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public static extern void GetLocalTime(ref SystemTime sysTime);
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public Form1()
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{
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//
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// Windows 窗体设计器支持所必需的
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//
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InitializeComponent();
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//
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// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
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//
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}
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///
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/// 清理所有正在使用的资源。
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///
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protected override void Dispose( bool disposing )
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{
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if( disposing )
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{
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if (components != null)
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{
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components.Dispose();
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}
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}
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base.Dispose( disposing );
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}
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#region Windows 窗体设计器生成的代码
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///
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/// 设计器支持所需的方法 - 不要使用代码编辑器修改
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/// 此方法的内容。
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///
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private void InitializeComponent()
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{
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this.groupBox1 = new System.Windows.Forms.GroupBox();
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this.textBox1 = new System.Windows.Forms.TextBox();
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this.groupBox2 = new System.Windows.Forms.GroupBox();
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this.setTime = new System.Windows.Forms.DateTimePicker();
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this.setDate = new System.Windows.Forms.DateTimePicker();
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this.button1 = new System.Windows.Forms.Button();
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this.button2 = new System.Windows.Forms.Button();
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this.timer1 = new System.Timers.Timer();
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this.groupBox1.SuspendLayout();
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this.groupBox2.SuspendLayout();
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((System.ComponentModel.ISupportInitialize)(this.timer1)).BeginInit();
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this.SuspendLayout();
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//
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// groupBox1
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//
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this.groupBox1.Controls.Add(this.textBox1);
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this.groupBox1.Location = new System.Drawing.Point(32, 24);
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this.groupBox1.Name = "groupBox1";
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this.groupBox1.Size = new System.Drawing.Size(216, 64);
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this.groupBox1.TabIndex = 0;
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this.groupBox1.TabStop = false;
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this.groupBox1.Text = "系统当前时间";
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//
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// textBox1
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//
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this.textBox1.Location = new System.Drawing.Point(16, 24);
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this.textBox1.Name = "textBox1";
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this.textBox1.ReadOnly = true;
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this.textBox1.Size = new System.Drawing.Size(184, 21);
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this.textBox1.TabIndex = 1;
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this.textBox1.Text = "";
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//
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// groupBox2
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//
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this.groupBox2.Controls.Add(this.setTime);
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this.groupBox2.Controls.Add(this.setDate);
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this.groupBox2.Location = new System.Drawing.Point(32, 112);
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this.groupBox2.Name = "groupBox2";
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this.groupBox2.Size = new System.Drawing.Size(216, 64);
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this.groupBox2.TabIndex = 1;
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this.groupBox2.TabStop = false;
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this.groupBox2.Text = "时间设置为";
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//
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// setTime
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//
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this.setTime.Format = System.Windows.Forms.DateTimePickerFormat.Time;
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this.setTime.Location = new System.Drawing.Point(128, 24);
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this.setTime.Name = "setTime";
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this.setTime.ShowUpDown = true;
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this.setTime.Size = new System.Drawing.Size(72, 21);
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this.setTime.TabIndex = 1;
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this.setTime.TabStop = false;
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//
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// setDate
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//
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this.setDate.Format = System.Windows.Forms.DateTimePickerFormat.Short;
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this.setDate.Location = new System.Drawing.Point(8, 24);
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this.setDate.Name = "setDate";
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this.setDate.Size = new System.Drawing.Size(104, 21);
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this.setDate.TabIndex = 0;
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//
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// button1
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//
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this.button1.Location = new System.Drawing.Point(40, 200);
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this.button1.Name = "button1";
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this.button1.Size = new System.Drawing.Size(64, 32);
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this.button1.TabIndex = 2;
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this.button1.Text = "设置";
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this.button1.Click += new System.EventHandler(this.button1_Click);
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//
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// button2
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//
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this.button2.Location = new System.Drawing.Point(168, 200);
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this.button2.Name = "button2";
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this.button2.Size = new System.Drawing.Size(64, 32);
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this.button2.TabIndex = 3;
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this.button2.Text = "退出";
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this.button2.Click += new System.EventHandler(this.button2_Click);
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//
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// timer1
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//
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this.timer1.Enabled = true;
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this.timer1.SynchronizingObject = this;
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this.timer1.Elapsed += new System.Timers.ElapsedEventHandler(this.timer1_Elapsed);
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//
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// Form1
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//
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this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
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this.ClientSize = new System.Drawing.Size(280, 261);
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this.Controls.Add(this.button2);
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this.Controls.Add(this.button1);
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this.Controls.Add(this.groupBox2);
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this.Controls.Add(this.groupBox1);
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this.Name = "Form1";
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this.Text = "获取和设置系统时间";
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this.groupBox1.ResumeLayout(false);
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this.groupBox2.ResumeLayout(false);
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((System.ComponentModel.ISupportInitialize)(this.timer1)).EndInit();
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this.ResumeLayout(false);
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}
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#endregion
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///
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/// 应用程序的主入口点。
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///
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[STAThread]
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static void Main()
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{
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Application.Run(new Form1());
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}
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private void button2_Click(object sender, System.EventArgs e)
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{
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this.Close(); // 关闭当前窗体
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}
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private void timer1_Elapsed(object sender, System.Timers.ElapsedEventArgs e)
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{
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// 清除textBox1上的字符串
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textBox1.Clear();
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// 创建SystemTime结构体，用于接收系统当前时间
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SystemTime systemTime = new SystemTime();
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GetLocalTime(ref systemTime); // 获得系统的时间并存在SystemTime结构体中
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// 将系统的时间从 SystemTime 结构体中中取出，并显示在textBox1上
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textBox1.Text += systemTime.wYear.ToString() +"-";
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textBox1.Text += systemTime.wMonth.ToString() + "-";
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textBox1.Text += systemTime.wDay.ToString() + " ";
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textBox1.Text += systemTime.wHour.ToString() + ":";
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textBox1.Text += systemTime.wMinute.ToString() + ":";
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textBox1.Text += systemTime.wSecond.ToString();
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// textBox1.Refresh();
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}
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private void button1_Click(object sender, System.EventArgs e)
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{
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// 创建SystemTime结构体，用于接收用户设置的时间
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SystemTime systemTime = new SystemTime();
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// 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
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systemTime.wYear = (ushort)setDate.Value.Year;
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systemTime.wMonth = (ushort)setDate.Value.Month;
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systemTime.wDay = (ushort)setDate.Value.Day;
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systemTime.wHour = (ushort)setTime.Value.Hour;
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systemTime.wMinute = (ushort)setTime.Value.Minute;
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systemTime.wSecond = (ushort)setTime.Value.Second;
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// 将系统的时间设置为用户指定的时间
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SetLocalTime(ref systemTime);
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}
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}
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}