前后台相互调用

来源：互联网发布：网络买车编辑：程序博客网时间：2024/04/29 07:00

HTML code

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="JavaScript get Net Function.aspx.cs" Inherits="JavaScript_get_Net_Function" %><!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>前臺與后臺方法護調總結</title>    <%--        JavaScript異步調用定義在ASP.Net頁面中的方法, 我們需要:            1.將該方法聲明為公有(public);            2.將該方法聲明為類方法(C#中的static,VB.NET中的Shared),而不是實例方法;            3.將該方法添加【WebMethod】屬性            4.將頁面中ScriptManager控件的EnablePageMethods屬性設置為true;            5.在客戶端使用如下JavaScript語法調用該頁面方法                PageMethods.[MethodName](param1,param2,...,callbackFunction);            6.為客戶端異步調用指定回調函數,在回調函數中接受返回值并進一步處理;            7.添加 using System.Web.Services;    --%>        <%--        ASP.Net后臺調用JavaScript function的方法,我們要注意:            1.盡量少用Response.Write(<script></script>);這種方法,它會影響CSS導致頁面效果偏差            2.C#中使用ScriptManager.RegisterStartupScript(this, this.GetType(), "edit", "JS('"+param1+"','"+param2+"')", true);            3.添加 using System.Web.UI;    --%>       <script type="text/javascript">   /*-------------JavaScript調用.Net后臺Start----------------------------------*/        function JsCallCSharp(param1)        {            PageMethods.SayHelloFromPage(param1,onSayHelloSucceeded);        }                function onSayHelloSucceeded(result)        {            alert(result);        }/*-------------JavaScript調用.Net后臺End----------------------------------*/        /*-------------.Net調用JavaScript Start-----------------------------------*/        function CSharpCallJs(param1,param2)        {            alert(param1 + param2);        }/*-------------.Net調用JavaScript Start-----------------------------------*/    </script>    </head><body>    <form id="form1" runat="server">    <div>        <asp:ScriptManager ID="ScriptManager1" EnablePageMethods="true" runat="server" />    </div>        <asp:Button ID="Button1" onclick="Button1_Click" OnClientClick="JsCallCSharp('takako');" runat="server" Text="Button1" />        </form></body></html>

C# code

using System;using System.Web.Services;using System.Web.UI;public partial class JavaScript_get_Net_Function : System.Web.UI.Page{    protected void Page_Load(object sender, EventArgs e)    {    }    protected void Button1_Click(object sender, EventArgs e)    {        string param1 = "你好:";        string param2 = "takako_mu";        ScriptManager.RegisterStartupScript(this, this.GetType(), "edit", "CSharpCallJs('" + param1 + "','" + param2 + "');", true);    }    [WebMethod]    public static string SayHelloFromPage(string name)    {        return string.Format("Hello {0}!", name);