这是第一使用Jquery实现城市三级数据联动的实例!之前本人没有使用过Jquery,在WebForm的开发过程中,很多时候用的是ASP.NET Ajax,ajaxPro +JavaScript,从未使用过JS框架,最近在学习ASP.NET MVC,在最新的发布版本中,已经集成了Jquery 1.3.1,自然,也要学一学!发现使用Jquery代码果然写得比原始JS优雅!只是语法和方法太多,现在还没弄熟,还需要时间来学习.....这次是第一次使用Jquery写客户端脚本,如果大家发现更好的实现方法,请给我留言!谢谢!
注明:ASP.NET MVC 1.0 ,作者:0x001;
View:
<script type="text/javascript"> $(document).ready(function() { GetByJquery(); $("#ddlProvince").change(function() { GetCity() }); $("#ddlCity").change(function() { GetDistrict() }); }); function GetByJquery() {
$("#ddlProvince").empty(); //清空省份SELECT控件
$.getJSON("/ajax/GetProvinceList", function(data) { $.each(data, function(i, item) { $("<option></option>") .val(item["ProvinceID"]) .text(item["ProvinceName"]) .appendTo($("#ddlProvince")); }); GetCity(); });
}
function GetCity() {
$("#ddlCity").empty(); //清空城市SELECT控件 var url ="/ajax/GetCityList/" + $("#ddlProvince").val(); $.getJSON(url, function(data) { $.each(data, function(i, item) { $("<option></option>") .val(item["CityID"]) .text(item["CityName"]) .appendTo($("#ddlCity")); }); GetDistrict(); }); }
function GetDistrict() { $("#ddlDistrict").empty(); //清空市区SELECT控件 var url = "/ajax/GetDistrictList/" + $("#ddlCity").val(); $.getJSON(url, function(data) { $.each(data, function(i, item) { $("<option></option>") .val(item["DistrictID"]) .text(item["DistrictName"]) .appendTo($("#ddlDistrict")); }); }); }
</script> <table><tr><td><select /></td></tr></table>
Controller :
using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Mvc.Ajax;
namespace MvcBBS.Controllers { public class AjaxController : Controller { // // GET: /Ajax/
/// <summary> /// 获取所有[省份]数据 /// </summary> public ActionResult GetProvinceList() { if (!Request.IsAjaxRequest()) { return Content("请不要非法方法,这是不道德的行为!"); }
BLL.Province bll = new MvcBBS.BLL.Province(); List<MvcBBS.Model.S_Province> modellist = bll.GetProvinceList();
return Json(modellist); }
/// <summary> /// 获取某[省份]的所有[城市]数据 /// </summary> public ActionResult GetCityList(int id) { if (!Request.IsAjaxRequest()) { return Content("请不要非法方法,这是不道德的行为!"); } BLL.Province bll = new MvcBBS.BLL.Province(); List<MvcBBS.Model.S_City> modellist = bll.GetCityList(id); return Json(modellist); }
/// <summary> /// 获取某[城市]的所有[市区]数据 /// </summary> public ActionResult GetDistrictList(int id) { if (!Request.IsAjaxRequest()) { return Content("请不要非法方法,这是不道德的行为!"); }
BLL.Province bll = new MvcBBS.BLL.Province(); List<MvcBBS.Model.S_District> modellist = bll.GetDistrict(id);
return Json(modellist); }
} }
我比较喜欢使用三层+工厂模式来读写数据,O/R Mapping不太适合我的要求!我们写的项目经常不是为了方便移植,而是选择明确的数据库,需要更高的性能,更强的业务逻辑!大家看到上面的代码,应该很熟悉,从数据库读数据到List<>中返回,并使有ASP.NET MVC内置的Json方法转换数据并Response.
DAL:
// BLL,Model就不贴出来了!
using System; using System.Data; using System.Text; using System.Data.SqlClient; using System.Collections.Generic; using DBUtility;//请先添加引用
namespace MvcBBS.DAL { public class Province { public Province() {}
/// <summary> /// 获取所有省份数据 /// </summary> /// <returns></returns> public List<Model.S_Province> GetProvinceList() { StringBuilder strSql = new StringBuilder(); strSql.Append("SELECT ProvinceID,ProvinceName "); strSql.Append(" FROM S_Province "); List<Model.S_Province> modelList = new List<MvcBBS.Model.S_Province>(); SqlDataReader dr = DbHelperSQL.ExecuteReader(strSql.ToString()); while (dr.Read()) { Model.S_Province _model = new MvcBBS.Model.S_Province(); _model.ProvinceID = int.Parse(dr["ProvinceID"].ToString()); _model.ProvinceName = dr.GetString(1); modelList.Add(_model); } dr.Close(); return modelList; }
/// <summary> /// 获取某省份的所有城市数据 /// </summary> /// <param name="ProvinceID"></param> /// <returns></returns> public List<Model.S_City> GetCityList(int ProvinceID) { StringBuilder strSql = new StringBuilder(); strSql.Append("SELECT CityID,CityName,ZipCode"); strSql.Append(" FROM S_City "); strSql.Append(" WHERE ProvinceID="); strSql.Append(ProvinceID.ToString());
List<Model.S_City> modelList = new List<MvcBBS.Model.S_City>(); SqlDataReader dr = DbHelperSQL.ExecuteReader(strSql.ToString()); while (dr.Read()) { Model.S_City _model = new MvcBBS.Model.S_City(); _model.CityID = int.Parse(dr["CityID"].ToString()); _model.CityName = dr.GetString(1); _model.ZipCode = dr.GetString(2); _model.ProvinceID = ProvinceID; modelList.Add(_model); } dr.Close(); return modelList; }
/// <summary> /// 获取某城市的所有市区 /// </summary> /// <param name="CityID"></param> /// <returns></returns> public List<Model.S_District> GetDistrict(int CityID) { StringBuilder strSql = new StringBuilder(); strSql.Append("SELECT DistrictID,DistrictName"); strSql.Append(" FROM S_District "); strSql.Append(" WHERE CityID="); strSql.Append(CityID.ToString());
List<Model.S_District> modelList = new List<MvcBBS.Model.S_District>(); SqlDataReader dr = DbHelperSQL.ExecuteReader(strSql.ToString()); while (dr.Read()) { Model.S_District _model = new MvcBBS.Model.S_District(); _model.DistrictID = int.Parse(dr["DistrictID"].ToString()); _model.DistrictName = dr.GetString(1); _model.CityID = CityID; modelList.Add(_model); } dr.Close(); return modelList; } } }
转载请注明: 0x001.com ,谢谢!大家多多提点建议!本人需要学习和改进的动力!
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