ASP.NET编程模型:RegisterStartupScript向页面注册脚本

<% @ Page Language = " C# "  AutoEventWireup = " true "  CodeFile = " Default3.aspx.cs "  Inherits = " WebParts_Default3 "   %>

<% @ Register Src = " SelectPro.ascx "  TagName = " SelectPro "  TagPrefix = " uc1 "   %>
<! DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" >
< html  xmlns ="http://www.w3.org/1999/xhtml" >
< head  runat ="server" >
     < title > 无标题页 </ title >
</ head >
< body >
     < form  id ="form1"  runat ="server" >
     < div  onclick ='test()' >
         < asp:TextBox  ID ="TextBox1"  runat ="server" ></ asp:TextBox >
         < asp:TextBox  ID ="TextBox2"  runat ="server" ></ asp:TextBox >
         < asp:TextBox  ID ="TextBox3"  runat ="server" ></ asp:TextBox >
         < asp:TextBox  ID ="TextBox4"  runat ="server" ></ asp:TextBox >
         < asp:TextBox  ID ="TextBox5"  runat ="server" ></ asp:TextBox >
     </ div >

     < script  type ="text/javascript" >
     function  test()
    {
    alert( ' <%= TextBox1.ClientID %> ' );
    
    }
    
    
     </ script >

     </ form >
</ body >
</ html >

 

using  System;
using  System.Collections;
using  System.Configuration;
using  System.Data;
using  System.Web;
using  System.Web.Security;
using  System.Web.UI;
using  System.Web.UI.HtmlControls;
using  System.Web.UI.WebControls;
using  System.Web.UI.WebControls.WebParts;

public   partial   class  WebParts_Default3 : System.Web.UI.Page
{
     protected   void  Page_Load( object  sender, EventArgs e)
    {
        Set1(); // 或Set2();
    }

     public   void  Set1()
    {
         string  script  =   "" ;
         for  ( int  i  =   0 ; i  <  Page.Form.Controls.Count; i ++ )
        {
             if  (Page.Form.Controls[i]  is  TextBox)
            {
                TextBox txt  =  Page.Form.Controls[i]  as  TextBox;
                txt.Attributes.Add( " onclick " , txt.ClientID  +   " _Show() " );
                txt.Style.Add(HtmlTextWriterStyle.BackgroundColor,  " yellow " );
                script  +=   " function  "   +  txt.ClientID  +   " _Show(){alert(' "   +  txt.ClientID  +   " ');}; " ;
            }
        }
        Page.ClientScript.RegisterStartupScript( this .GetType(),  " script " ,  " <script> "   +  script  +   " </script> " );
    }

     public   void  Set2()
    {
         string  script  =   "" ;
         for  ( int  i  =   0 ; i  <  Page.Form.Controls.Count; i ++ )
        {
             if  (Page.Form.Controls[i]  is  TextBox)
            {
                TextBox txt  =  Page.Form.Controls[i]  as  TextBox;
                txt.Attributes.Add( " onclick " ,  " Show(' "   +  txt.ClientID  +   " ') " );
                txt.Style.Add(HtmlTextWriterStyle.BackgroundColor,  " red " );

                script  =   " function Show(id){alert(id);}; " ;
            }
        }
        Page.ClientScript.RegisterStartupScript( this .GetType(),  " script " ,  " <script> "   +  script  +   " </script> " );
    }
}