The read-only property control.
using System;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
public class TimerCounter : System.Windows.Forms.UserControl {
private System.Windows.Forms.Timer timer1;
private System.ComponentModel.IContainer components;
private int fCounter = 0;
public int Counter {
get {
return fCounter;
}
}
public TimerCounter() {
this.components = new System.ComponentModel.Container();
this.timer1 = new System.Windows.Forms.Timer(this.components);
this.timer1.Enabled = true;
this.timer1.Interval = 1000;
this.timer1.Tick += new System.EventHandler(this.OnTick);
this.Name = "TimerCounter";
}
private void OnTick(object sender, System.EventArgs e) {
fCounter++;
}
}
public class Form1 : System.Windows.Forms.Form {
private System.Windows.Forms.Label label1 = new System.Windows.Forms.Label();
private System.Windows.Forms.Label CounterLabel;
private System.Windows.Forms.Button Update;
private System.ComponentModel.Container components = null;
private TimerCounter counter;
public Form1() {
counter = new TimerCounter();
this.CounterLabel = new System.Windows.Forms.Label();
this.Update = new System.Windows.Forms.Button();
this.SuspendLayout();
this.label1.Location = new System.Drawing.Point(32, 24);
this.label1.Size = new System.Drawing.Size(48, 23);
this.label1.Text = "Counter: ";
this.CounterLabel.Location = new System.Drawing.Point(96, 24);
this.CounterLabel.Size = new System.Drawing.Size(32, 23);
this.Update.Location = new System.Drawing.Point(80, 72);
this.Update.Text = "Update";
this.Update.Click += new System.EventHandler(this.Update_Click);
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(224, 133);
this.Controls.AddRange(new System.Windows.Forms.Control[] {this.Update,this.CounterLabel,this.label1});
this.ResumeLayout(false);
}
[STAThread]
static void Main() {
Application.Run(new Form1());
}
private void Update_Click(object sender, System.EventArgs e) {
CounterLabel.Text = counter.Counter.ToString();
}
}
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