WP7的ObservableCollection排序

Question

我有一個集合：

public ObservableCollection<Shops> ShopList { get; set; } 

再經過我把4種元素在它（這是正確顯示），我嘗試對它們進行排序

ShopList.Clear(); 
var orderedlist = ShopList.OrderBy(k => k.Name); 
foreach (Shops s in orderedlist) 
    ShopList.Add((Shops)s); 

ShopList現在有4個空元素。爲什麼是這樣，以及如何糾正代碼？ 感謝

Answer 1

這是正確的順序：

var orderedlist = ShopList.OrderBy(k => k.Name); 
ShopList.Clear(); 
foreach (Shops s in orderedlist) 
    ShopList.Add((Shops)s);