ASP.NET AJAX 实现-优快云博客

本文链接：https://blog.youkuaiyun.com/Matrix_Designer/article/details/5923989

一种异步调用方式，AJAX的一种实现方式,示例如下:
页面代码如下:

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Test2.aspx.cs" Inherits="Test2" %>
<!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">
    function CallServer()
    {
        var arg=document.all.DataInput.value;
        
        <%=ClientScript.GetCallbackEventReference(this, "arg", "GetCallbackData", null) %>
    }
    function GetCallbackData(result,context)
    {
        alert("服务器返回:/n" + result);
    }
    </script>
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <input id="DataInput" />
        <button type="button" language="javascript" onclick="CallServer();">异步调用</button>
    </div>
    </form>
</body>
</html>

后台代码如下:

using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
public partial class Test2 : System.Web.UI.Page, ICallbackEventHandler
{
    string backString;
    protected void Page_Load(object sender, EventArgs e)
    {
    }
    public void RaiseCallbackEvent(string eventArgument)
    {
        backString = "Time:" + DateTime.Now.ToString() + "/nUpperData is:" + eventArgument.ToUpper();
    }
    public string GetCallbackResult()
    {
        return backString;
    }
}

异步调用一