制作服務器控件示例

源代碼：

using System;
using System.Web.UI;
using System.ComponentModel;
namespace TestControlNameSpace
{
 [DefaultProperty("Text"),
 ToolboxData("<{0};TestControl runat = server></{0}:TestControl>")]
 public class TestControl:Control
 {
  private string text;
  private string message;
  [Bindable(true),
  Category("Appearance"),
  DefaultValue("")]
  public string Text
  {
   get {return text;}
   set {text = value;}
  }
  [Bindable(true),Category("Misc")]
  public string ExMessage
  {
   get {return message;}
   set {message = value;}
  }
  protected override void Render(HtmlTextWriter output)
  {
   output.Write(text+message);
  }
       }
}