Question

控制器

public ActionResult brand(int brand_Id = 0)
{
    var model = db.MVCs.Where(i => i.brand_Id == brand_Id);
    if (model == null)
    {
        return HttpNotFound();
    }
    return View(model);
}

查看

@model MVC3.Models.productDB
@{
    ViewBag.Title = "brand";
    Layout = "~/Views/Shared/_LayoutPageMaster.cshtml";
}
<h2>brand</h2>
@foreach(var item in Model.brand){
@Html.DisplayFor(i=>i.ProductName)}

模型

public class productDB
{   
    [Key]
    public int ID   {get;set;}
    public string ProductName { get; set; }
    public string ProdactDetails { get; set; }
    [DisplayFormat(DataFormatString = "{0:N0}", ApplyFormatInEditMode = true)]
    public decimal Price { get; set; }
    [DisplayFormat(DataFormatString = "{0:N0}", ApplyFormatInEditMode = true)]
    public decimal? OffPrice { get; set; }
    [DataType(DataType.ImageUrl)]
    public string image  { get; set; }
    [Display(Name = "Cat")]
    public int Cat_Id { get; set; }
    [ForeignKey("Cat_Id")]
    public virtual Cat Cat { get; set; }
    public string ProdactTitle { get; set; }
    [Display(Name = "brand")]
    public int brand_Id { get; set; }
    [ForeignKey("brand_Id")]
    public virtual Brand brand { get; set; }
}

public class productDBContext : DbContext
{
    public DbSet<productDB> MVCs { get; set; }
}

我想根据品牌名称对数据库进行排序，但它不起作用

错误：

传递到字典中的模型项的类型为＆System; System.Data.Entity.Infrastructure.DbQuery`1 [MVC3.Models.productDB]＆＃39;，但此字典需要类型为＆的模型项＃39; MVC3.Models.productDB＆＃39;

Answer 1

编辑您的控制器：

public ActionResult brand(int brand_Id = 0)
{
   var model = db.MVCs.Where(i => i.brand_Id == brand_Id).OrderBy(b => b.Brand.Brand_name).ToList();       
   if (model == null)
   {
       return HttpNotFound();
   }
   return View(model);
}

您也可以使用OrderByDescending()。

有关ToList()的更多信息：msdn

Answer 2

在进行查询时，您只需在您的产品系列上调用.OrderBy(x => x.Brand.Brand_name)

即可

我想根据品牌名称对数据库进行排序，但它不起作用

2 个答案: