如何在c＃中按日期时间对集合进行排序

I have a List that I need to sort by DateTime, the class MyStuff looks like:

我有一个List，我需要按DateTime排序，类MyStuff看起来像：

public class MyStuff
{
   public int Type {get;set;}
   public int Key {get;set;}
   public DateTime Created {get;set;}
}

I need to be able to sort the collection List by the Created (DateTime) field.

我需要能够通过Created（DateTime）字段对集合List进行排序。

2 个解决方案

#1

You seem to be working with a List<T> object, in which case the most efficient (and a simple) method would be the following:

您似乎正在使用List 对象，在这种情况下，最有效（和简单）的方法如下：

myList.Sort((x, y) => DateTime.Compare(x.Created, y.Created));

This uses the overload of the List.Sort method than takes a Comparison<T> delegate (and thus lambda expression).

这使用了List.Sort方法的重载，而不是使用Comparison 委托（以及lambda表达式）。

You can of course use the LINQ OrderBy extension method, but I don't think this offers any advantages, and can be significantly slower, depending on your situation.

您当然可以使用LINQ OrderBy扩展方法，但我认为这不会带来任何好处，并且可能会明显变慢，具体取决于您的具体情况。

myList = myList.OrderBy(x => x.Created).ToList();

#2

var query = 
    from m in mystuffcollection
    orderby m.Created ascending
    select m;

#1