我有4张桌子
国家/地区表
Id primarykey增量标识
COUNTRYNAME
城市表
Id主键增量标识
CITYNAME
CountryId forignkey
Ditrict表
Id primarykey增量标识
Districtname
CityId forignkey
员工表
Id主键增量标识
FNAME
SNAME
薪水
加成
districtid forignkey
关系没有任何问题，并且sql server数据库中的关系是好的
当从国家/地区选择项目时，它会毫无问题地填写城市下拉列表
但是当我从城市中选择项目时，它不会填充区域中的项目
我的代码中出现了错误，如下所示 我的控制员员如下：
员工控制器
public class EmployeeController : Controller
{
// GET: Employee
mytaskdbEntities db = new mytaskdbEntities();
public ActionResult Index()
{
return View(db.Employees.ToList());
}
public ActionResult Create()
{
ViewBag.CountryList = new SelectList(db.Countries.ToList(), "Id","Countryname");
return View();
}
public JsonResult getcitybyid(int id)
{
db.Configuration.ProxyCreationEnabled = false;
return Json(db.Cities.Where(a =>a.CountryId == id), JsonRequestBehavior.AllowGet);
}
public JsonResult getdistrictbyid(int id)
{
db.Configuration.ProxyCreationEnabled = false;
return Json(db.Districts.Where(a => a.CityId == id), JsonRequestBehavior.AllowGet);
}
}
}
我的员工视图是
@model LinqProject.Models.Employee
@{
Layout = null;
}
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="width=device-width" />
<title>Create</title>
<script src="~/Scripts/jquery-1.10.2.js"></script>
<script>
$(function () {
$("#CountryList").change(function () {
$("#citylist").empty();
// alert("error");
var x = $(this).val();
$.ajax({
url: "/Employee/getcitybyid",
data: { id: x },
success:function(res)
{
$.each(res, function (i, e) {
$("#citylist").append("<option value='"+e.id+"'>"+e.Cityname+"<option>")
});
}
});
});
$("#citylist").change(function () {
$("#districtlist").empty();
var y = $(this).val();
$.ajax({
url: "/Employee/getdistrictbyid",
data: { id: y },
success: function (res) {
$.each(res, function (i, e) {
$("#districtlist").append("<option value='" + e.id + "'>" + e.Districtname + "<option>")
});
}
});
});
});
</script>
</head>
<body>
<div>
@using (Html.BeginForm())
{
<div>
FirstName:@Html.TextBoxFor(a=>a.fname)
</div>
<div>
LastName:@Html.TextBoxFor(a => a.sname)
</div>
<div>
Salary:@Html.TextBoxFor(a => a.Salary)
</div>
<div>
Bonus:@Html.TextBoxFor(a => a.Bonus)
</div>
<div>
Bonus:@Html.TextBoxFor(a => a.Active)
</div>
<div>
CountryName:@Html.DropDownList("CountryList")
</div>
<div>
CityName:<select id="citylist" name="CityId"></select>
</div>
<div>
District:<select id="districtlist" name="districtId"></select>
</div>
<input type="submit" />
}
</div>
</body>
</html>