using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data;

namespace clock { /// <summary> /// Summary description for Form1. /// </summary> public class Form1 : System.Windows.Forms.Form { private System.Timers.Timer Clock; private System.Windows.Forms.Label lbTime; private System.ComponentModel.IContainer components; /// <summary> /// Required designer variable. /// </summary> //private System.ComponentModel.Container components = null;

public Form1() { // // Required for Windows Form Designer support // InitializeComponent();

// // TOD Add any constructor code after InitializeComponent call // }

/// <summary> /// Clean up any resources being used. /// </summary> protected override void Dispose( bool disposing ) { if( disposing ) { if (components != null) { components.Dispose(); } } base.Dispose( disposing ); }

#region Windows Form Designer generated code /// <summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// </summary> private void InitializeComponent() { this.lbTime = new System.Windows.Forms.Label(); this.Clock = new System.Timers.Timer(); ((System.ComponentModel.ISupportInitialize)(this.Clock)).BeginInit(); this.SuspendLayout(); // // lbTime // this.lbTime.Font = new System.Drawing.Font("Arial", 15.75F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0))); this.lbTime.Location = new System.Drawing.Point(8, 8); this.lbTime.Name = "lbTime"; this.lbTime.Size = new System.Drawing.Size(120, 48); this.lbTime.TabIndex = 0; this.lbTime.Text = "dd:dd:dd"; this.lbTime.TextAlign = System.Drawing.ContentAlignment.MiddleCenter; this.lbTime.Click += new System.EventHandler(this.lbTime_Click); // // Clock // this.Clock.Enabled = true; this.Clock.Interval = 1000; this.Clock.SynchronizingObject = this.lbTime; this.Clock.Elapsed += new System.Timers.ElapsedEventHandler(this.Clock_Elapsed); // // Form1 // this.AutoScaleBaseSize = new System.Drawing.Size(6, 14); this.ClientSize = new System.Drawing.Size(126, 60); this.Controls.Add(this.lbTime); this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D; this.MaximizeBox = false; this.Name = "Form1"; this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this.Text = "时钟"; ((System.ComponentModel.ISupportInitialize)(this.Clock)).EndInit(); this.ResumeLayout(false);

} #endregion

/// <summary> /// The main entry point for the application. /// </summary> [STAThread] static void Main() { Application.Run(new Form1()); }

public string GetTime() { string TimeInString=""; int hour=DateTime.Now.Hour; int min=DateTime.Now.Minute; int sec=DateTime.Now.Second;

TimeInString=(hour < 10)?"0" + hour.ToString() :hour.ToString(); TimeInString+=":" + ((min<10)?"0" + min.ToString() :min.ToString()); TimeInString+=":" + ((sec<10)?"0" + sec.ToString() :sec.ToString()); return TimeInString; }

private void Clock_Elapsed(object sender, System.Timers.ElapsedEventArgs e) { if(sender==Clock) { lbTime.Text=GetTime(); } }

private void lbTime_Click(object sender, System.EventArgs e) { } } }

public string GetTime() { string TimeInString=""; int hour=DateTime.Now.Hour; int min=DateTime.Now.Minute; int sec=DateTime.Now.Second;

TimeInString=(hour < 10)?"0" + hour.ToString() :hour.ToString(); TimeInString+=":" + ((min<10)?"0" + min.ToString() :min.ToString()); TimeInString+=":" + ((sec<10)?"0" + sec.ToString() :sec.ToString()); return TimeInString; }

private void Clock_Elapsed(object sender, System.Timers.ElapsedEventArgs e) { if(sender==Clock) { lbTime.Text=GetTime(); } }

private void lbTime_Click(object sender, System.EventArgs e) { } } } 核心代码自己去看