主要介绍如下三种方式，分别表现在3个Button的Click事件中，代码如下：

前台：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="RunJSFunctionAfterPostBack.aspx.cs" Inherits="EricSunWebAppProject.RunJSFunctionAfterPostBack" %>            
     
        
              
      
            
                   
                   
               
      
    
     

【注：要能够执行Button1中的Click方法，前台的<asp:ScriptManager ID="Scriptmanager1" runat="server" />必须加上。】

后台：

using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;namespace EricSunWebAppProject{    public partial class RunJSFunctionAfterPostBack : System.Web.UI.Page    {        protected void Page_Load(object sender, EventArgs e)        {        }        protected void Button1_Click(object sender, EventArgs e)        {            string callbackJSFunction = "";            Page.ClientScript.RegisterStartupScript(this.GetType(), "HelloKey", callbackJSFunction);         }        protected void Button2_Click(object sender, EventArgs e)        {            Response.Write("");         }        protected void Button3_Click(object sender, EventArgs e)        {            string s = "";            Page.ClientScript.RegisterStartupScript(this.GetType(), "HelloKey", s);         }    }}

 相关知识请看：

 

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