winevents.cs

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

public class MyForm : Form 
{  
   private TextBox box;
   private Button button;
   
   public MyForm() : base() 
   {  
      box = new TextBox();
      box.BackColor = System.Drawing.Color.Cyan;
      box.Size = new Size(100,100);
      box.Location = new Point(50,50);
      box.Text = "Hello";
      
      button = new Button();
      button.Location = new Point(50,100);
      button.Text = "Click Me";
      
      // To wire the event, create
      // a delegate instance and add it to the Click event.
      button.Click += new EventHandler(this.Button_Clicked);
      Controls.Add(box);
      Controls.Add(button);   
   }
   // The event handler.
   private void Button_Clicked(object sender, EventArgs e) 
   {
      box.BackColor = System.Drawing.Color.Green;
   }
   // STAThreadAttribute indicates that Windows Forms uses the
   // single-threaded apartment model.
   [STAThreadAttribute]
   public static void Main(string[] args) 
   {
      Application.Run(new MyForm());
   }  
}