TemplateControl, classe

public abstract class TemplateControl : Control, INamingContainer, IFilterResolutionService

public abstract class TemplateControl extends Control implements INamingContainer, IFilterResolutionService

public abstract class TemplateControl extends Control implements INamingContainer, IFilterResolutionService

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Security.Permissions;


 // The custom user control class.
 [AspNetHostingPermission(SecurityAction.Demand, 
   Level=AspNetHostingPermissionLevel.Minimal)]
 public class MyControl:UserControl
 {
   // Create a Message property and accessors.
   private string _message = null;
   public string Message
   {
      get
      {
         return _message;
      }
      set
      {
         _message = value;
      }
   }

   // Create an event for this user control and
   // name it myControl.
   public event System.EventHandler myControl;

   // Override the default constructor.
   protected override void Construct()
   {
      // Specify the handler, MyInit, to be called when the myControl event
      // is raised by the OnInit method.
      this.myControl += new System.EventHandler(MyInit);    
   }

   protected override void OnInit( EventArgs e)
   {
      myControl(this ,e);
      Response.Write("The OnInit() method is used to raise the Init event.");
   }

   // Use the MyInit handler to set the Message property value
   // when this method is called.
   void MyInit(object sender,System.EventArgs e)
   {
      _message = "Hello World!";
   }

   // Write the value of the Message property when the control
   // is rendered.
   protected override void Render(HtmlTextWriter output) 
   {
      output.Write("<br>Message :" + _message);
   }
 }