WP7 ObservableCollection排序

Question

I have a collection: 我有一个集合：

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

then after i put 4 elements in it(it is displayed correctly), i try to sort them 然后我把4个元素放入其中（它显示正确），我尝试对它们进行排序

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

ShopList now has 4 null elements. ShopList现在有4个null元素。 Why is that, and how to correct the code? 为什么这样，以及如何纠正代码？ Thanks 谢谢

Answer 1

This is the correct order: 这是正确的顺序：

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