Asp.Net中通过Ajax（post）双向传参实例（aspx经典版，源码实例，已测试！菜鸟必看！）

一、ajax.aspx.cs 后台代码。

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.Script.Services;
using System.Web.Services;


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

    [WebMethod]
    public static string ajax(string aaa, string bbb)     
{
    return aaa+bbb;
}

二、前台JS代码

$.ajax({
                    type: "Post",
                    url: "ajax.aspx/ajax",
                    data: "{'aaa':'电话号码：','bbb':'114'}",
                    contentType: "application/json; charset=utf-8",
                    dataType: "json",
                    success: function (data) {
                        alert(data.d);
                    },
                    error: function (err) {
                        alert(err);
                    }
                });