我提前为我的格式化道歉!
我正在关注教程(Here)并且我正在尝试为类别创建详细信息页面,但不是显示课程标题和成绩,而是要显示产品的ID,品牌,名称,条形码和具有相同CategoryId的每种产品的价格。
然而,我收到此错误:
“Inventory.Models.Category不包含'类别'的定义,并且没有扩展方法'类别'接受类型'Invetory.Models.Category'的第一个参数可以找到”
班级模型
public class Category {
public int Id{get;set;}
public string Name {get;set;}
}
public class Product{
public int Id{get;set;}
public int CategoryId{get;set;}
public String Brand {get;set;}
public String Name {get;set;}
public decimal Price{get;set;
}
类别/ Details.cshtml:
@model Inventory.Models.Category
@{
ViewBag.Title = "Details";
}
<h2>Details</h2>
<div>
<h4>Category</h4>
<hr />
<dl class="dl-horizontal">
<dt>
@Html.DisplayNameFor(model => model.Name) <--ERROR HERE
</dt>
<dd>
@Html.DisplayFor(model => model.Name) <--ERROR
</dd>
<!--Test start-->
<dt>
@Html.DisplayNameFor(model => model.Category)
</dt>
<dd>
<table class="table">
<tr>
<th>Category</th>
<th>ID</th>
</tr>
@foreach (var item in Model.Category)
{
<tr>
<td>
@Html.DisplayFor(modelItem => item.Product.Name)
</td>
<td>
@Html.DisplayFor(modelItem => item.ID)
</td>
</tr>
}
</table>
</dd>
<!--test end-->
</dl>
</div>
<p>
@Html.ActionLink("Edit", "Edit", new { id = Model.ID }) |
@Html.ActionLink("Back to List", "Index")
</p>
Product.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Inventory.Models
{
public class Product
{
public int Id { get; set; }
public int CategoryId { get; set; }
public string Brand { get; set; }
public string Name { get; set; }
public string Barcode { get; set;}
public decimal Price { get; set; }
public virtual ICollection<Category> Categories { get; set; }
}
}
Category.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Inventory.Models
{
public class Category
{
public int ID { get; set; }
public string Name { get; set; }
public virtual Product Product { get; set; }
}
}
答案 0 :(得分:1)
好的,所以你有很多问题,但让我们这样做
1)您的模型很可能是产品而不是类别,因此您的视图@model Inventory.Models.Category
更改为@model Inventory.Models.Product
2)产品型号中没有类别,所以添加
public class Product
{
public int Id { get; set; }
public int CategoryId { get; set; }
public string Brand { get; set; }
public string Name { get; set; }
public string Barcode { get; set;}
public decimal Price { get; set; }
public Category Category { get; set; } // <--- Add this
public virtual ICollection<Category> Categories { get; set; }
}
3)IEnumerable(即你循环的列表)被称为Categories而不是Category,所以将@foreach (var item in Model.Category)
更改为@foreach (var item in Model.Categories)