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ajax省市县三级联动 ajax实现无刷新省市县三级联动

wangjingjing1014 人气:0
想了解ajax实现无刷新省市县三级联动的相关内容吗,wangjingjing1014在本文为您仔细讲解ajax省市县三级联动的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:ajax无刷新省市县三级联动,ajax无刷新三级联动,ajax三级联动,下面大家一起来学习吧。

效果图:

实现代码:

1、html:

<html>
<head>
 <title></title>
  <style type="text/css">
  select
  {
   width: 150px;
  }
 </style>
 <script src="js/Jquery1.7.js" type="text/javascript"></script>
 <script type="text/javascript">
  $(function () {
   $.ajax({
    type: "post",
    contentType: "application/json",
    url: "WebService1.asmx/GetProvince",
    data: "{}",
    success: function (result) {
     var stroption = '';
     for (var i = 0; i < result.d.length; i++) {
      stroption += '<option value=' + result.d[i].provinceID + '>';
      stroption += result.d[i].provincename;
      stroption += '</option>';
     }
     $('#seprovince').append(stroption);
    }
   })


   $('#seprovince').change(function () {
    $('#secity option:gt(0)').remove();
    $('#searea option:gt(0)').remove();

    $.ajax({
     type: "post",
     contentType: "application/json",
     url: "WebService1.asmx/GetCItyByPro",
     data: "{proid:'" + $(this).val() + "'}",
     success: function (result) {
      var strocity = '';
      for (var i = 0; i < result.d.length; i++) {
       strocity += '<option value=' + result.d[i].cityID + '>';
       strocity += result.d[i].cityname;
       strocity += '</option>';
      }
      $('#secity').append(strocity);
     }
    })
   })


   $('#secity').change(function () {
    $('#searea option:gt(0)').remove();
    $.ajax({
     type: "post",
     contentType: "application/json",
     url: "WebService1.asmx/GetAreaByCity",
     data: "{cityid:'" + $(this).val() + "'}",
     success: function (result) {
      var stroarea = '';
      for (var i = 0; i < result.d.length; i++) {
       stroarea += '<option value=' + result.d[i].areaID + '>';
       stroarea += result.d[i].areaname;
       stroarea += '</option>';
      }
      $('#searea').append(stroarea);
     }
    })
   })
  })
 </script>
</head>
<body>
 <table>
  <tr>
   <td>
    用户名
   </td>
   <td>
    <input id="Text1" type="text" />
   </td>
  </tr>
  <tr>
   <td>
    密码
   </td>
   <td>
    <input id="Text2" type="text" />
   </td>
  </tr>
  <tr>
   <td>
    确认密码
   </td>
   <td>
    <input id="Text3" type="text" />
   </td>
  </tr>
  <tr>
   <td>
    邮箱
   </td>
   <td>
    <input id="Text4" type="text" />
   </td>
  </tr>
  <tr>
   <td>
    地址
   </td>
   <td>
    <select id="seprovince">
     <option>--请选择--</option>
    </select>
    省
    <select id="secity">
     <option>--请选择--</option>
    </select>市
    <select id="searea">
     <option>--请选择--</option>
    </select>县
   </td>
  </tr>
 </table>
</body>
</html>

2、WebService1.asmx

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;


namespace 省市县三级联动
{
 /// <summary>
 /// WebService1 的摘要说明
 /// </summary>
 [WebService(Namespace = "http://tempuri.org/")]
 [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
 [System.ComponentModel.ToolboxItem(false)]
 // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务,请取消对下行的注释。
  [System.Web.Script.Services.ScriptService]
 public class WebService1 : System.Web.Services.WebService
 {


  [WebMethod]
  public string HelloWorld()
  {
   return "Hello World";
  }
  [WebMethod]
  public List<Model.province> GetProvince()
  {
   BLL.province bpro = new BLL.province();
   List<Model.province> list = bpro.GetListModel();
   return list;
  }
  [WebMethod]
  public List<Model.city> GetCItyByPro(string proid)
  {
   BLL.city bcity = new BLL.city();
   List<Model.city> list = bcity.GetListModel("father='" + proid + "'");
   return list;
  }
  [WebMethod]
  public List<Model.area> GetAreaByCity(string cityid)
  {
   BLL.area barea = new BLL.area();
   List<Model.area> list = barea.GetListModel("father='" + cityid + "'");
   return list;
  }
 }
}

在三层的Bll层中的city.cs和area.cs中分别添加以下属性

//city.cs:
 public List<Model.city> GetListModel(string strsql)
  {
   return dal.GetListModel(strsql);
  }
//area.cs:
  public List<Model.area> GetListModel(string strsql)
  {
   return dal.GetListModel(strsql);
  }

在三层的DAL层中的city.cs和area.cs中分别添加以下方法

//city.cs:
public System.Collections.Generic.List<Model.city> GetListModel(string strsql)
  {
   System.Collections.Generic.List<Model.city> list = new System.Collections.Generic.List<Model.city>();
   DataTable dt = GetList(strsql).Tables[0];
   foreach (DataRow row in dt.Rows)
   {
    Model.city mcity = new Model.city();
    mcity.id = Convert.ToInt32(row["id"]);
    mcity.cityID = row["cityID"].ToString();
    mcity.cityname = row["cityname"].ToString();
    list.Add(mcity);
   }
   return list;
  }
//area.cs:
 public System.Collections.Generic.List<Model.area> GetListModel(string strsql)
  {
   DataTable dt = GetList(strsql).Tables[0];
   System.Collections.Generic.List<Model.area> list = new System.Collections.Generic.List<Model.area>();
   foreach (DataRow row in dt.Rows)
   {
    Model.area marea = new Model.area()
    {
     id = Convert.ToInt32(row["id"]),
     areaID = row["areaID"].ToString(),
     areaname = row["areaname"].ToString()
    };
    list.Add(marea);
   }
   return list;
  }

以上就是本文的全部内容,希望对大家的学习有所帮助。

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