ASP.NET复合控件开发

  
    

   
     using
   
      System;

   
     using
   
      System.Collections.Generic;

   
     using
   
      System.ComponentModel;

   
     using
   
      System.Linq;

   
     using
   
      System.Text;

   
     using
   
      System.Web;

   
     using
   
      System.Web.UI;

   
     using
   
      System.Web.UI.WebControls;


   
     namespace
   
      ServerControl1
{
 [DefaultProperty(
   
     "
   
     Text
   
     "
   
     )]
 [ToolboxData(
   
     "
   
     <{0}:ServerControl1 runat=server></{0}:ServerControl1>
   
     "
   
     )]
 
   
     public
   
      
   
     class
   
      ServerControl1 : CompositeControl,INamingContainer
 {
 [Bindable(
   
     true
   
     )]
 [Category(
   
     "
   
     Appearance
   
     "
   
     )]
 [DefaultValue(
   
     ""
   
     )]
 [Localizable(
   
     true
   
     )]
 
   
     public
   
      
   
     string
   
      Text
 {
 
   
     get
   
     
 {
 String s 
   
     =
   
      (String)ViewState[
   
     "
   
     Text
   
     "
   
     ];
 
   
     return
   
      ((s 
   
     ==
   
      
   
     null
   
     ) 
   
     ?
   
      
   
     "
   
     [
   
     "
   
      
   
     +
   
      
   
     this
   
     .ID 
   
     +
   
      
   
     "
   
     ]
   
     "
   
      : s);
 }

 
   
     set
   
     
 {
 ViewState[
   
     "
   
     Text
   
     "
   
     ] 
   
     =
   
      value;
 }
 }
 
 
   
     public
   
      
   
     string
   
      Tip 
 {
 
   
     get
   
      { 
   
     return
   
      ViewState[
   
     "
   
     aa
   
     "
   
     ].ToString(); }
 
   
     set
   
     {ViewState[
   
     "
   
     aa
   
     "
   
     ]
   
     =
   
     value;}
 }
 TextBox tb1;
 Button btn;
 Label lb;
 
   
     protected
   
      
   
     override
   
      
   
     void
   
      CreateChildControls()
 {
 Controls.Add(
   
     new
   
      LiteralControl(
   
     "
   
     <h3>第一个数
   
     "
   
     ));
 tb1 
   
     =
   
      
   
     new
   
      TextBox();
 tb1.Text 
   
     =
   
      
   
     "
   
     0
   
     "
   
     ;
 Controls.Add(tb1);
 btn 
   
     =
   
      
   
     new
   
      Button();
 btn.Text 
   
     =
   
      
   
     "
   
     登录
   
     "
   
     ;
 btn.CommandName 
   
     =
   
      
   
     "
   
     login
   
     "
   
     ;
 
   
     //
   
      btn.Click += new EventHandler(btn_Click);
   
     

   
      Controls.Add(btn);
 lb 
   
     =
   
      
   
     new
   
      Label();
 lb.Text 
   
     =
   
      
   
     "
   
     aaaaaaaaa
   
     "
   
     ;
 Controls.Add(lb);
 }

   
     
//点击复合控件中的子控件的事件时触发，事件冒泡出来


   
     

   
      
   
     protected
   
      
   
     override
   
      
   
     bool
   
      OnBubbleEvent(
   
     object
   
      source, EventArgs e)

 {
 
   
     bool
   
      handed 
   
     =
   
      
   
     false
   
     ;
 
   
     if
   
      (e 
   
     is
   
      CommandEventArgs )
 {
 CommandEventArgs ce 
   
     =
   
      (CommandEventArgs)e;
 
   
     if
   
      (ce.CommandName
   
     ==
   
     "
   
     login
   
     "
   
     )
 {
 lb.Text 
   
     =
   
      
   
     "
   
     aaaaaaaa
   
     "
   
     ;
 handed 
   
     =
   
      
   
     true
   
     ;
 }
 }
 
   
     return
   
      handed;
 }

 
   
     public
   
      
   
     class
   
      CheckEventArgs : EventArgs
 {
 
   
     private
   
      
   
     bool
   
      match 
   
     =
   
      
   
     false
   
     ;

 
   
     public
   
      CheckEventArgs(
   
     int
   
      difference)
 {
 
   
     if
   
      (difference 
   
     ==
   
      
   
     0
   
     )
 {
 match 
   
     =
   
      
   
     true
   
     ;
 }
 }
 
   
     public
   
      
   
     bool
   
      Match
 {
 
   
     get
   
     
 {
 
   
     return
   
      match;
 }
 }
 }
 
   
     public
   
      
   
     event
   
      CheckEventHandler Check;
 
   
     public
   
      
   
     delegate
   
      
   
     void
   
      CheckEventHandler(
   
     object
   
      sender, CheckEventArgs ce);
 }
}