如何訂購IEnumerable <T> 匿名類型？

Question

看下面的代碼，我不知道為什么我的訂單不起作用，有什么想法嗎？

var orderSample = new { ProductName = "", Qty = 0, UserFullName = "" };
var ordersList = (new[] { orderSample }).ToList();

//loop thru another collection and fill ordersList by adding an order at a time
ordersList.Add(new { ProductName = "Product1", Qty = 5, UserFullName = "Mr. Smith" });

//sort the orders by name - DOESN'T WORK
ordersList.OrderBy(p => p.ProductName);

gvReport3.DataSource = ordersList;
gvReport3.DataBind();

Answer 1

var sortedList = ordersList.OrderBy(p => p.ProductName).ToList();

OrderBy（）返回一個已排序的集合，它不會修改ordersList。

如果需要修改ordersList，請改用Sort。