MVC 3 - 异常详细信息：System.InvalidOperationException [英] MVC 3 - Exception Details: System.InvalidOperationException
问题描述
我想从我的两个表中获取所有数据，但我有很多的编译问题。你知道它在哪里的问题？此外，我想在这里声明两个表回归视图（repository.Towar）;现在是可见的一个，但我不`吨知道我应该怎么做也是这个se.Towar_zakupiony。
我发现自己的解决方案：
code：
使用系统;
使用System.Collections.Generic;
使用System.Linq的;
使用的System.Web;
使用System.Web.Mvc;
使用SportsStore.Abstract;
使用SportsStore.Entities;命名空间SportsStore.WebUI.Controllers
{
公共类ProductController的：控制器
{
//
// GET：/产品/
公共ITowarRepository库;
公共IKategorieRepository重; 公共ProductController的（ITowarRepository productRepository，IKategorieRepository kategorie）
{
库= productRepository;
重新= kategorie;
} 公众的ViewResult列表（）
{
SomeViewModel视图模型=新SomeViewModel
{
Towar = repository.Towar
.OrderBy（P =＆GT; p.Id_tow）
Kategorie = re.Kategorie
.OrderBy（P =＆GT; p.Id_kat） }; 返回视图（视图模型）;
} }
}
code：
使用系统;
使用System.Collections.Generic;
使用System.Linq的;
使用System.Text;命名空间SportsStore.Entities
{
公共类SomeViewModel
{
公共IEnumerable的＆LT; SportsStore.Entities.Towar＆GT; Towar {搞定;组; }
公共IEnumerable的＆LT; SportsStore.Entities.Kategorie＆GT; Kategorie {搞定;组; }
公共IEnumerable的＆LT; SportsStore.Entities.Zdjecie＆GT; Zdjecie {搞定;组; }
公共IEnumerable的＆LT; SportsStore.Entities.Typ_zdjecia＆GT; Typ_zdjecia {搞定;组; }
公共IEnumerable的＆LT; SportsStore.Entities.Zakup＆GT; Zakup {搞定;组; }
公共IEnumerable的＆LT; SportsStore.Entities.Adres＆GT;住址{搞定;组; }
公共IEnumerable的＆LT; SportsStore.Entities.Status＆GT;状态{搞定;组; }
公共IEnumerable的＆LT; SportsStore.Entities.Towar_Zakupiony＆GT; Towar_zakupiony {搞定;组; }
}
}
code：
@model SportsStore.Entities.SomeViewModel@ {
ViewBag.Title =清单;
布局=〜/查看/共享/ _Layout.cshtml
}＆LT; H2＆GT;列表与LT; / H＆GT;@foreach（在Model.Towar VAR P）
{
＆LT; DIV CLASS =项＆GT;
＆LT; H3＆GT; @ p.Nazwa＆LT; / H3 GT＆;
@ p.Opis
＆LT; H4＆GT; @ p.Cena.ToString（C）＆LT; / H4＆GT;
＆LT; / DIV＆GT;
}＆LT; H2＆GT;列表与LT; / H＆GT;@foreach（在Model.Kategorie变种B）
{
＆LT; DIV CLASS =项＆GT;
＆LT; H3＆GT; @ b.Nazwa＆LT; / H3 GT＆;
＆LT; / DIV＆GT;
}
看起来像你的 repositary.Towar 属性返回Towar收集一个对象。所以，你的看法应该有界到
@model IEnumerable的＆LT; Towar＆GT;
@ {
ViewBag.Title =清单;
}＆LT; H2＆GT;列表与LT; / H＆GT;@foreach（以型号VAR P）
{
＆LT; DIV CLASS =项＆GT;
＆LT; H3＆GT; @ p.Nazwa＆LT; / H3 GT＆;
@ p.Opis
＆LT; H4＆GT; @ p.Cena.ToString（C）＆LT; / H4＆GT;
＆LT; / DIV＆GT;
}
假设 Naszwa 和以上的价格是你的 Towar 类
建议：我个人觉得你的code可以得到更好的可读性
1）我会写在Repositary方法，该方法返回一个收藏 Towar的 objeccts这样
公开的IList＆LT; Towar＆GT; GetAllTowars（）;
您可以在您的实现类实现这个返回Towar对象的名单。实施（获取数据是由你）
这是在我的控制，我将这样称呼它
VAR towerList = repo.GetAllTowars（）;
retuen视图（towerList）;
I trying get all data from my two tables but I have a lot of compile problems. Do you know where is it problem? Also I would like to declaration two tables here return "View(repository.Towar);" Now is visible one but I don`t know what should I do also this "se.Towar_zakupiony".
I found solution myself:
code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Mvc;
using SportsStore.Abstract;
using SportsStore.Entities;
namespace SportsStore.WebUI.Controllers
{
public class ProductController : Controller
{
//
// GET: /Product/
public ITowarRepository repository;
public IKategorieRepository re;
public ProductController(ITowarRepository productRepository, IKategorieRepository kategorie)
{
repository = productRepository;
re = kategorie;
}
public ViewResult List()
{
SomeViewModel viewModel = new SomeViewModel
{
Towar = repository.Towar
.OrderBy(p => p.Id_tow),
Kategorie = re.Kategorie
.OrderBy(p => p.Id_kat)
};
return View(viewModel);
}
}
}
code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace SportsStore.Entities
{
public class SomeViewModel
{
public IEnumerable<SportsStore.Entities.Towar> Towar { get; set; }
public IEnumerable<SportsStore.Entities.Kategorie> Kategorie { get; set; }
public IEnumerable<SportsStore.Entities.Zdjecie> Zdjecie { get; set; }
public IEnumerable<SportsStore.Entities.Typ_zdjecia> Typ_zdjecia { get; set; }
public IEnumerable<SportsStore.Entities.Zakup> Zakup { get; set; }
public IEnumerable<SportsStore.Entities.Adres> Adres { get; set; }
public IEnumerable<SportsStore.Entities.Status> Status { get; set; }
public IEnumerable<SportsStore.Entities.Towar_Zakupiony> Towar_zakupiony { get; set; }
}
}
code:
@model SportsStore.Entities.SomeViewModel
@{
ViewBag.Title = "List";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2>List</h2>
@foreach (var p in Model.Towar)
{
<div class="item">
<h3>@p.Nazwa</h3>
@p.Opis
<h4>@p.Cena.ToString("c")</h4>
</div>
}
<h2>List</h2>
@foreach (var b in Model.Kategorie)
{
<div class="item">
<h3>@b.Nazwa</h3>
</div>
}
Looks like your repositary.Towar property returns a Collection of Towar object. So your view should bounded to that
@model IEnumerable<Towar>
@{
ViewBag.Title = "List";
}
<h2>List</h2>
@foreach (var p in Model)
{
<div class="item">
<h3>@p.Nazwa</h3>
@p.Opis
<h4>@p.Cena.ToString("c")</h4>
</div>
}
Assuming Naszwa and Cena are two properties of your Towar class
Suggestion : Personally i feel your code can be better readable.
1) I would write a method in the Repositary which returns a Collection of Towar objeccts like this
public IList<Towar> GetAllTowars();
You may implement this in your Implementation class to return a List of Towar objects. Implementation (getting the data is up to you)
An in my controller i will call it like this
var towerList=repo.GetAllTowars();
retuen View(towerList);
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