Linq to SQL - 輸出類型？ （不顯示信息只顯示型）

Question

所以，球員......我有這樣的疑問：

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

這裏是我的代碼有：

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; 

它的工作原理就像輸出價格一樣。

價格出來是這樣的：

誰能告訴我如何輸出價格以適當的格式，而不是數據類型？

謝謝！

Answer 1

什麼是 「propper格式」？

你可以做這樣的事情：

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

這將使輸出一個逗號分隔的字符串