Ajax级联菜单实例代码

1.Ajax.html
复制代码 代码如下:

   

AJAX
   
        请选择省份
        江苏
        上海
   
      
        请选择城市
   

2.getdata.aspx.cs
复制代码 代码如下:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

public partial class ajax_getdata: System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string[] js=new string[]{"南京",  "苏州",  "常州" , "无锡" ,  "镇江"};
        string pro=Request.QueryString["pro"];
        if (pro == "1")
        {
            string temp = "";
            for (int i = 0; i < js.Length; i++)
            {
                temp = temp + js[i];

                temp = temp + ",";

            }
            Response.Write(temp);
        }
        else
            Response.Write("");
    }
}