我想查詢數據庫列表將顯示在dropdownlistfor在視圖中,並選擇結果將發佈。MVC3提交兩個模型視圖與dropdownlistfor從數據庫
的問題是我使用鑑於兩款車型我想更多的選擇
我迷路了這一點,我不知道如何將它張貼。數據顯示在列表框中沒有問題。當我嘗試後我得到這個錯誤:
「有型無ViewData的項目‘的IEnumerable’是 有鑰匙‘Item2.idcity’」 System.Exception的 {System.InvalidOperationException}
CityModel
public class CityModel
{
public int idcity { get; set; }
[Required]
public string cityName { get; set; }
public IEnumerable<CityModel> citys { get; set; }
}
HospitalModel
public class HospitalShowModels
{
[Required]
public string hospitalName { get; set; }
[Required]
public string cityName { get; set; }
}
HospitalControler.Create()
public ActionResult Create()
{
ViewBag.cityModel = new SelectList(DataAccess.DAL.showCity(), "idcity", "cityName");
var tuple = new Tuple<DataAccess.HospitalShowModels, DataAccess.CityModel>(new DataAccess.HospitalShowModels(), new DataAccess.CityModel());
return View(tuple);
}
[HttpPost]
public ActionResult Create(DataAccess.HospitalShowModels model, DataAccess.CityModel model1)
{
if (ModelState.IsValid) {
DataAccess.DAL.insertHospital(model.hospitalName, model1.cityName);
}else{
ModelState.AddModelError("","Invalid options");
}
return View();
}
View.Create
@model Tuple<ProjektZaja.DataAccess.HospitalShowModels,ProjektZaja.DataAccess.CityModel>
@using (Html.BeginForm()) {
@Html.ValidationSummary(true)
<fieldset>
<legend>Create Hospital</legend>
<div class="editor-label">
@Html.LabelFor(model => model.Item1.hospitalName)
</div>
<div class="editor-field">
@Html.EditorFor(model => model.Item1.hospitalName)
@Html.ValidationMessageFor(model => model.Item1.hospitalName)
</div>
<div class="editor-label">
@Html.LabelFor(model => model.Item1.cityName)
</div>
<div class="editor-field">
@Html.DropDownListFor(model => Model.Item2.idcity,(IEnumerable<SelectListItem>)ViewBag.cityModel)
@Html.ValidationMessageFor(model1 => Model.Item2.idcity)