JS调用CS里的方法：PageMethods

最新推荐文章于 2019-07-12 03:54:14 发布

转载最新推荐文章于 2019-07-12 03:54:14 发布 · 564 阅读

文章标签：

#server #javascript #asp.net #button #function #asp

本文介绍如何在JavaScript中调用ASP.NET的后台C#方法。需确保方法为静态且标记@WebMethod特性，同时客户端需定义回调函数处理返回结果，并配置ScriptManager启用页面方法。

http://www.cnblogs.com/juxiaoqi/archive/2008/08/21/1273059.html

举个列子：

Default.aspx 里代码

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

<! 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 >
< script type = " text/javascript " language = " javascript " >

</ script >
</ head >
< body >
     < form id = " form1 " runat = " server " >
     < asp:ScriptManager ID = " ScriptManager1 " runat = " server " EnablePageMethods = " true " >
     </ asp:ScriptManager >
     < div >
     < input type = ' button ' value = ' 删除 ' onclick = ' minbzdm() ' />
     </ div >
     </ form >
</ body >
</ html >

Default.aspx.cs里的代码

public partial class _Default : System.Web.UI.Page
{
     protected void Page_Load( object sender, EventArgs e)
    {
    }

    [System.Web.Services.WebMethod]
     public static string OK()
    {
         return " OK " ;
    }
}

通过PageMethods方法来实现JS调用CS，必须注意一下几点：

【1】静态的方法

public static

【2】需要在cs方法上加上：

[System.Web.Services.WebMethod]

【3】需要自定义一个函数接受结果

        function xxx(result)
        {
        alert(result);
        }

【4】ScriptManager 必须设置成 EnablePageMethods="true"

Tag标签: ASP.NET, PageMethods, JS调CS