Question

我想将4个成员的Tuple传递给View。

控制器：

   PGOrders pGOrder = db.PGOrders.Find(id);
   int imgID = pGOrder.imageID;
   PGOrderImages pGorderImages = db.PGOrderImages.Find(imgID);
   PGAccountDatas account = db.PGAccountDatas.Where(a => a.PGAccountDataID == pGOrder.ordererID).FirstOrDefault();
   var  offs = db.PGOffers.Where(o => o.orderID == pGOrder.PGOrderID);

return View(Tuple.Create(pGOrder, pGorderImages, account, offs));

查看：

@using projectname.Models
@model Tuple<PGOrders, PGOrderImages, PGAccountDatas, IQueryable<PGOffers>>

        @foreach (var item in Model.Item4){
            <text><p> some item property</p></text>
        }

问题与foreach循环一致。

Exception Details: System.InvalidCastException: Object must implement IConvertible.

我试图改变 var offs = db.PGOffers.Where(o => o.orderID == pGOrder.PGOrderID);
至 var offs = db.PGOffers.Where(o => o.orderID == pGOrder.PGOrderID).ToList();

并在View中更改 IQueryable<PGOffers> IEnumerable<PGOffers> 但它没有帮助。

pGOrder，pGorderImages，account是指定的类对象。

问题是：

如何将类对象列表作为元组成员传递？

Answer 1

你必须转换为可枚举，如下所示：

var  offs = db.PGOffers.Where(o => o.orderID == pGOrder.PGOrderID).AsEnumerable();

然后将您的模型设置为：

@model Tuple<PGOrders, PGOrderImages, PGAccountDatas, IEnumerable<PGOffers>>

ASP.net MVC - 将列表传递给View作为元组成员

1 个答案: