1、添加省份和城市类
//省份
public class Province
{
public int Id { get; set; }
public string Name { get; set; }
}
//城市
public class City
{
public int Id { get; set; }
public string Name { get;set;}
public int ProvinceId { get; set; }
}
2、添加控制器
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using SupermarketManagement.Models;
namespace SupermarketManagement.Controllers
{
public class LinkageController : Controller
{
List<Province> provinceList = new List<Province>();
List<City> cityList = new List<City>();
//初始化城市数据
private void InitProvince()
{
provinceList.Add(new Province { Id = 1, Name = "河北省" });
provinceList.Add(new Province { Id = 2, Name = "河南省" });
provinceList.Add(new Province { Id = 3, Name = "广东省" });
cityList.Add(new City { Id = 4, Name = "石家庄", ProvinceId = 1 });
cityList.Add(new City { Id = 5, Name = "邢台", ProvinceId = 1 });
cityList.Add(new City { Id = 6, Name = "保定", ProvinceId = 1 });
cityList.Add(new City { Id = 7, Name = "郑州", ProvinceId = 2 });
cityList.Add(new City { Id = 8, Name = "安阳", ProvinceId = 2 });
cityList.Add(new City { Id = 9, Name = "洛阳", ProvinceId = 2 });
cityList.Add(new City { Id = 10, Name = "广州", ProvinceId = 3 });
cityList.Add(new City { Id = 11, Name = "中山", ProvinceId = 3 });
cityList.Add(new City { Id = 12, Name = "佛山", ProvinceId = 3 });
}
//绑定省份
public ActionResult Index()
{
InitProvince();
var pEnumrable = provinceList.Select(p => new SelectListItem { Value = p.Id.ToString(), Text = p.Name });
ViewBag.Province = pEnumrable;
return View();
}
//获取城市
public ActionResult ShowCity(int provinceId)
{
InitProvince();
List<City> cList = new List<City>();
cList = cityList.Where(c => c.ProvinceId == provinceId).ToList();
return Json(cList, JsonRequestBehavior.AllowGet);
}
}
}
3、添加HTML
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Index</title>
<script src="~/Content/jquery-1.8.3.min.js"></script>
<script>
$(function () {
$("#Province").bind("change", function () {
var selectProvince = $(this).val();
//除了第一个都删除
$("#City option:not(:first)").remove();
$.getJSON("@Url.Action("ShowCity","Linkage")", { provinceId: selectProvince }, function (data) {
$.each(data, function (i, item) {
$("#City").append("<option value=‘"+item.Id+"‘>"+item.Name+"</option>");
});
});
});
});
</script>
</head>
<body>
省份：@Html.DropDownList("Province", "请选择省份")<br />
城市：<select id="City">
<option value="">请选择城市</option>
</select><br />
</body>
</html>
时间： 2024-10-05 17:23:23