Linq to SQL - 输出类型？ （不显示仅显示类型的信息）

Question

那么伙计......我有这个问题：

  

Allow the user view the top five selling products in descending order grouped by country.

这是我的代码：

var q6 = (from t in northwind.Products
             join o in northwind.Suppliers on t.SupplierID equals o.SupplierID
             group t.UnitPrice by new {o.Country, t.UnitPrice} into grouped
             let county = grouped.Key.Country
             let price = grouped.Key.UnitPrice
             group new 
             {
                 Country = county,
                 Product = price
             }
             by county
             into countryGrouped
             select new
             {
                 Output = countryGrouped.Key,
                 Price = countryGrouped.OrderBy(c => c.Product)
             });                

        lbxTop5.ItemsSource = q6;

就输出价格而言。

价格如下：

有谁能告诉我如何以正确的格式而不是数据类型输出价格？

谢谢！

Answer 1

什么是“正确格式”？

您可以这样做：

...
select new
{
    Output = countryGrouped.Key,
    Price = string.Join(",", countryGrouped.OrderBy(c => c.Product))
});

这将使输出成为逗号分隔的字符串