我有2个表,书籍和属性,它们彼此连接,与表Attribute_Book具有多对多的关系。我没有设法做创建功能,只想在详细信息视图中显示第3个表中的数据。我把manualy只是为了检查并得到一个问题,除了我要显示的值之外还显示了一个代理,它是属性名称(用断点查看).Project首先是db。谢谢你的帮助。
这是我的Books ViewModel
public BookModel()
{
this.Attribute_Book = new HashSet<Attribute_Book>();
}
public int BookID { get; set; }
public string Title { get; set; }
public int AuthorID { get; set; }
public int CountryID { get; set; }
public decimal Price { get; set; }
public string Description { get; set; }
public Nullable<int> PagesCount { get; set; }
public string Picture { get; set; }
public decimal TotalPrice { get; set; }
public virtual ICollection<Attribute_Book> Attribute_Book { get; set; }
public virtual Author Author { get; set; }
public virtual Country Country { get; set; }
这是我的属性模型
public Attribute()
{
this.Attribute_Book = new HashSet<Attribute_Book>();
}
public int AttributeID { get; set; }
public string Name { get; set; }
public int AttTypeID { get; set; }
public virtual ICollection<Attribute_Book> Attribute_Book { get; set; }
public virtual Attribute_Type Attribute_Type { get; set; }
这是我的Attribute_Book模型
public int ID { get; set; }
public int BookID { get; set; }
public int AttributeID { get; set; }
public string ValueTypeText { get; set; }
public Nullable<System.DateTime> ValueTypeDate { get; set; }
public virtual Attribute Attribute { get; set; }
public virtual Book Book { get; set; }
这是我在控制器中的详细信息操作
public async Task<ActionResult> Details(int? id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
//Book book = await db.Books.Include(b=>b.Attribute_Book).FirstOrDefaultAsync(b=>b.BookID==id);
Book book = await db.Books.FindAsync(id);
BookModel model = GetBooks.Details(book);
if (book == null)
{
return HttpNotFound();
}
return View(model);
}
视图Details.cshtml中我要显示数据的部分
<dd>
@Html.DisplayFor(model => model.Attribute_Book)
@{
var extAtt = Model.Attribute_Book.FirstOrDefault();
if (extAtt != null)
{
@extAtt.ValueTypeText
}
}
</dd>
详细信息视图正在使用我的ViewModel,我想也许它会有所帮助,但仍然没有和我的功能我获取viewmodel的详细信息
public static BookModel Details(Book item)
{
var model = new BookModel
{
BookID = item.BookID,
Title = item.Title,
PagesCount = Convert.ToInt32(item.PagesCount),
Description = item.Description,
Price = item.Price,
CountryID = item.CountryID,
AuthorID = item.AuthorID,
Author = item.Author,
Country = item.Country,
Picture = item.Picture,
TotalPrice = item.Country.TelCode + item.Price,
Attribute_Book = item.Attribute_Book.ToList()
};
return model;
}
这就是它给我看的
System.Data.Entity.DynamicProxies.Attribute_E4A8D634F0CCC98D73ED369A80817849BFA813311536941614A7242B3A2751A2 456
最后3个数字是我想得到的值))
答案 0 :(得分:0)
所有问题都在考虑之中。刚刚删除了这个部分@Html.DisplayFor(model => model.Attribute_Book)
并且它可以工作,我想displayfor在primarykey id之后获取了第一个数据值,这是AttributeID并试图显示它。