前台html代码
<html xmlns="http://www.w3.org/1999/xhtml"> <head> <title></title> <style type="text/css"> select { width:150px; } </style> <script src="Jquery1.7.js" type="text/javascript"></script> <script type="text/javascript"> $(function () { $.ajax({ type: "post", contentType: "application/json", url: "WebService2.asmx/Loadprovince", data: "{}", success: function (result) { for (var i = 0; i < result.d.length; i++) { var 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(); $.ajax ({ type: "post", url: "WebService2.asmx/Getcity", data: "{provinceid:'" + $(this).val() + "'}", success: function (result) { var strcity = ''; for (var i = 0; i < result.d.length; i++) { strcity += '<option value=' + result.d[i].cityID + '>'; strcity += result.d[i].cityname; strcity += '</option>'; } $('#secity').append(strcity); } }) })
$('#secity').change(function () { $('#searea option:gt(0)').remove(); $.ajax({ type: "post", url: "WebService2.asmx/Getarea", data: "{cityid:'" + $(this).val() + "'}", success: function (result) { var strarea = ''; for (var i = 0; i < result.d.length; i++) { strarea += '<option value=' + result.d[i].areaID + '>'; strarea += result.d[i].areaname; strarea += '</option>'; } $('#searea').append(strarea); } })
}) }) </script> </head> <body> <div> <table> <tr> <td>省</td> <td> <select id="seprovince"> <option>--请选择--</option> </select> </td> </tr> <tr> <td>市</td> <td> <select id="secity"> <option>--请选择--</option> </select> </td> </tr> <tr> <td>县</td> <td> <select id="searea"> <option>--请选择--</option> </select> </td> </tr> </table> </div> </body> </html>
WebService页面代码
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Services;
namespace 三联动 { /// <summary> /// WebService2 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 WebService2 : System.Web.Services.WebService {
[WebMethod] public string HelloWorld() { return "Hello World"; } [WebMethod] public List<WebAJAX.Model.province> Loadprovince() { WebAJAX.BLL.province bprovince = new WebAJAX.BLL.province(); List<WebAJAX.Model.province> list = bprovince.GetListModel(); return list; } [WebMethod] public List<WebAJAX.Model.city> Getcity(string provinceid) { WebAJAX.BLL.city bcity = new WebAJAX.BLL.city(); List<WebAJAX.Model.city> list = bcity.GetListModel("father='"+provinceid+"'"); return list; } [WebMethod] public List<WebAJAX.Model.area> Getarea(string cityid) { WebAJAX.BLL.area bllarea = new WebAJAX.BLL.area(); List<WebAJAX.Model.area> list= bllarea.GetListModel("father='" + cityid + "'"); return list; } } }
三层BLL代码
省
public List<Model.province> GetListModel() { return dal.GetListModel(); }
市
public List<Model.city> GetListModel(string strsql) { return dal.GetListModel(strsql); }
县
public List<Model.area> GetListModel(string strsql) { return dal.GetListModel(strsql); }
三层DAL代码
省
public System.Collections.Generic.List<Model.province> GetListModel() { System.Collections.Generic.List<Model.province> list = new System.Collections.Generic.List<Model.province>(); DataTable dt= GetList("").Tables[0]; foreach (DataRow row in dt.Rows) { Model.province mpro = new Model.province(); mpro.id = Convert.ToInt32(row["id"]); mpro.provinceID = row["provinceID"].ToString(); mpro.provincename = row["provincename"].ToString(); list.Add(mpro); } return list; }
市
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; }
县
public System.Collections.Generic.List<Model.area> GetListModer(string strsql) { System.Collections.Generic.List<Model.area> list = new System.Collections.Generic.List<Model.area>(); DataTable dt= GetList(strsql).Tables[0]; foreach (DataRow row in dt.Rows) { Model.area marea = new Model.area(); marea.id = Convert.ToInt32(row["id"]); marea.areaID = row["areaID"].ToString(); marea.areaname = row["areaname"].ToString(); list.Add(marea); } return list; } (编辑:李大同)
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