Use Label and Timer to create a Clock

   
 

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

public class Form1 : System.Windows.Forms.Form {
    public System.Timers.Timer timer1;
    private System.Windows.Forms.Label label1;
    public Form1() {
        this.timer1 = new System.Timers.Timer();
        this.label1 = new System.Windows.Forms.Label();
        ((System.ComponentModel.ISupportInitialize)(this.timer1)).BeginInit();
        this.SuspendLayout();
        // 
        // timer1
        // 
        this.timer1.Enabled = true;
        this.timer1.SynchronizingObject = this;
        this.timer1.Elapsed += new System.Timers.ElapsedEventHandler(this.OnTimerElapsed);
        // 
        // label1
        // 
        this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
        this.label1.ForeColor = System.Drawing.SystemColors.Highlight;
        this.label1.Location = new System.Drawing.Point(24, 8);
        this.label1.Name = "label1";
        this.label1.Size = new System.Drawing.Size(224, 48);
        this.label1.TabIndex = 0;
        this.label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;
        // 
        // Form1
        // 
        this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
        this.ClientSize = new System.Drawing.Size(292, 69);
        this.Controls.AddRange(new System.Windows.Forms.Control[] {
                                                                      this.label1});
        this.Text = "My Clock";
        this.Load += new System.EventHandler(this.Form1_Load);
        ((System.ComponentModel.ISupportInitialize)(this.timer1)).EndInit();
        this.ResumeLayout(false);

    }
    [STAThread]
    static void Main() {
        Application.Run(new Form1());
    }

    private void Form1_Load(object sender, System.EventArgs e) {
        timer1.Interval = 1000;
        timer1.Start();
        timer1.Enabled = true;
    }

    private void OnTimerElapsed(object sender, System.Timers.ElapsedEventArgs e) {
        label1.Text = DateTime.Now.ToString();
    }
}