详解如何利用C#实现设置系统时间
目录
- 实践过程
- 效果
- 代码
实践过程
效果
代码
public partial class Form1 : Form { public Form1() { InitializeComponent(); } //api函数声明 [DllImport("kernel32.dll", CharSet = CharSet.Ansi)] public extern static bool SetSystemTime(ref SYSTEMTIME time); [StructLayout(LayoutKind.Sequential)] public struct SYSTEMTIME { public short Year; public short Month; public short DayOfWeek; public short Day; public short Hour; public short Minute; public short Second; public short Miliseconds; } private void timer1_Tick(object sender, EventArgs e) { lblNowTime.Text = DateTime.Now.ToString(); } private void Form1_Load(object sender, EventArgs e) { lblNowTime.Text = DateTime.Now.ToString(); Microsoft.Win32.SystemEvents.TimeChanged+=new EventHandler(SystemEvents_TimeChanged); } private void SystemEvents_TimeChanged(object sender, EventArgs e) { MessageBox.Show("系统日期修改成功!","提示",MessageBoxButtons.OK,MessageBoxIcon.Information); } private void button1_Click(object sender, EventArgs e) { mYear = monthCalendar1.SelectionRange.Start.Year; mMonth = monthCalendar1.SelectionRange.Start.Month; mDay = monthCalendar1.SelectionRange.Start.Day; //调用代码 SYSTEMTIME t = new SYSTEMTIME(); t.Year = (short)mYear; t.Month = (short)mMonth; t.Day = (short)mDay; t.Hour = (short)(dateTimePicker1.Value.Hour - 8);//这个函数使用的是0时区的时间,例如,要设12点,则为12-8 t.Minute = (short)dateTimePicker1.Value.Minute; t.Second = (short)dateTimePicker1.Value.Second; bool v = SetSystemTime(ref t); } int mYear; int mDay; int mMonth; private void monthCalendar1_DateSelected(object sender, DateRangeEventArgs e) { mYear = e.Start.Year; mMonth = e.Start.Month; mDay =e.Start.Day; } private void button2_Click(object sender, EventArgs e) { Application.Exit(); } }
partial class Form1 { /// <summary> /// 必需的设计器变量。 /// </summary> private System.ComponentModel.IContainer components = null; /// <summary> /// 清理所有正在使用的资源。 /// </summary> /// <param name="disposing">如果应释放托管资源,为 true;否则为 false。</param> protected override void Dispose(bool disposing) { if (disposing && (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.components = new System.ComponentModel.Container(); this.monthCalendar1 = new System.Windows.Forms.MonthCalendar(); this.tabControl1 = new System.Windows.Forms.TabControl(); this.tabPage1 = new System.Windows.Forms.TabPage(); this.button2 = new System.Windows.Forms.Button(); this.button1 = new System.Windows.Forms.Button(); this.groupBox2 = new System.Windows.Forms.GroupBox(); this.dateTimePicker1 = new System.Windows.Forms.DateTimePicker(); this.label2 = new System.Windows.Forms.Label(); this.lblNowTime = new System.Windows.Forms.Label(); this.label1 = new System.Windows.Forms.Label(); this.groupBox1 = new System.Windows.Forms.GroupBox(); this.timer1 = new System.Windows.Forms.Timer(this.components); this.tabControl1.SuspendLayout(); this.tabPage1.SuspendLayout(); this.groupBox2.SuspendLayout(); this.groupBox1.SuspendLayout(); this.SuspendLayout(); // // monthCalendar1 // this.monthCalendar1.Location = new System.Drawing.Point(4, 15); this.monthCalendar1.Name = "monthCalendar1"; this.monthCalendar1.ShowToday = false; this.monthCalendar1.ShowTodayCircle = false; this.monthCalendar1.TabIndex = 0; this.monthCalendar1.TitleBackColor = System.Drawing.Color.LightSkyBlue; this.monthCalendar1.TitleForeColor = System.Drawing.Color.Black; this.monthCalendar1.TrailingForeColor = System.Drawing.Color.White; this.monthCalendar1.DateSelected += new System.Windows.Forms.DateRangeEventHandler(this.monthCalendar1_DateSelected); // // tabControl1 // this.tabControl1.Controls.Add(this.tabPage1); this.tabControl1.Location = new Syste开发者_JAVA开发m.Drawing.Point(4, 编程客栈4); this.tabControl1.Name = "tabControl1"; this.tabControl1.SelectedIndex = 0; this.tabControl1.Size = new Sjsystem.Drawing.Size(300, 335); this.tabControl1.TabIndex = 1; // // tabPage1 // thisjs.tabPage1.Controls.Add(this.button2); this.tabPage1.Controls.Add(this.button1); this.tabPage1.Controls.Add(this.groupBox2); this.tabPage1.Controls.Add(this.groupBox1); this.tabPage1.Location = new System.Drawing.Point(4, 21); this.tabPage1.Name = "tabPage1"; this.tabPage1.Padding = new System.Windows.Forms.Padding(3); this.tabPage1.Size = new System.Drawing.Size(292, 310); this.tabPage1.TabIndex = 0; this.tabPage1.Text = "时间和日期"; this.tabPage1.UseVisualStyleBackColor = true; // // button2 // this.button2.Location = new System.Drawing.Point(163, 279); this.button2.Name = "button2"; this.button2.Size = new System.Drawing.Size(75, 23); this.button2.TabIndex = 4; this.button2.Text = "取消"; this.button2.UseVisualStyleBackColor = true; this.button2.Click += new System.EventHandler(this.button2_Click); // // button1 // this.button1.Location = new System.Drawing.Point(56, 279); this.button1.Name = "button1"; this.button1.Size = new System.Drawing.Size(75, 23); this.button1.TabIndex = 3; this.button1.Text = "确定"; this.button1.UseVisualStyleBackColor = true; this.button1.Click += new System.EventHandler(this.button1_Click); // // groupBox2 // this.groupBox2.Controls.Add(this.dateTimePicker1); this.groupBox2.Controls.Add(this.label2); this.groupBox2.Controls.Add(this.lblNowTime); this.groupBox2.Controls.Add(this.label1); this.groupBox2.Location = new System.Drawing.Point(9, 182); this.groupBox2.Name = "groupBox2"; this.groupBox2.Size = new System.Drawing.Size(277, 91); this.groupBox2.TabIndex = 2; this.groupBox2.TabStop = false; this.groupBox2.Text = "设置时间"; // // dateTimePicker1 // this.dateTimePicker1.Format = System.Windows.Forms.DateTimePickerFormat.Time; this.dateTimePicker1.Location = new System.Drawing.Point(80, 55); this.dateTimePicker1.Name = "dateTimePicker1"; this.dateTimePicker1.ShowUpDown = true; this.dateTimePicker1.Size = new System.Drawing.Size(90, 21); this.dateTimePicker1.TabIndex = 3; // // label2 // this.label2.AutoSize = true; this.label2.Location = new System.Drawing.Point(9, 59); this.label2.Name = "label2"; this.label2.Size = new System.Drawing.Size(65, 12); this.label2.TabIndex = 2; this.label2.Text = "设置时间:"; // // lblNowTime // this.lblNowTime.AutoSize = true; this.lblNowTime.Location = new System.Drawing.Point(81, 29); this.lblNowTime.Name = "lblNowTime"; this.lblNowTime.Size = new System.Drawing.Size(0, 12); this.lblNowTime.TabIndex = 1; // // label1 // this.label1.AutoSize = true; this.label1.Location = new System.Drawing.Point(9, 29); this.label1.Name = "label1"; this.label1.Size = new System.Drawing.Size(65, 12); js this.label1.TabIndex = 0; this.label1.Text = "当前时间:"; // // groupBox1 // this.groupBox1.Controls.Add(this.monthCalendar1); this.groupBox1.FlatStyle = System.Windows.Forms.FlatStyle.Flat; this.groupBox1.Location = new System.Drawing.Point(8, 5); this.groupBox1.Name = "groupBox1"; this.groupBox1.Size = new System.Drawing.Size(278, 169); this.groupBox1.TabIndex = 1; this.groupBox1.TabStop = false; this.groupBox1.Text = "选择日期"; // // timer1 // this.timer1.Enabled = true; this.timer1.Interval = 1000; this.timer1.Tick += new System.EventHandler(this.timer1_Tick); // // Form1 // this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this.ClientSize = new System.Drawing.Size(306, 341); this.Controls.Add(this.tabControl1); this.FormBorderStyle = System.Windows.Forms.FormBorderStjsyle.FixedSingle; this.MaximizeBox = false; this.MinimizeBox = false; this.Name = "Form1"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "设置任务栏时间"; this.Load += new System.EventHandler(this.Form1_Load); this.tabControl1.ResumeLayout(false); this.tabPage1.ResumeLayout(false); this.groupBox2.ResumeLayout(false); this.groupBox2.PerformLayout(); this.groupBox1.ResumeLayout(false); this.ResumeLayout(false); } #endregion private System.Windows.Forms.MonthCalendar monthCalendar1; private System.Windows.Forms.TabControl tabControl1; private System.Windows.Forms.TabPage tabPage1; private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.GroupBox groupBox2; private System.Windows.Forms.DateTimePicker dateTimePicker1; private System.Windows.Forms.Label label2; private System.Windows.Forms.Label lblNowTime; private System.Windows.Forms.Label label1; private System.Windows.Forms.Button button2; private System.Windows.Forms.Button button1; private System.Windows.Forms.Timer timer1; }
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