如何排序在Visual C＃对象的数组？ [英] How to sort an array of objects in Visual C#?

问题描述

我有两个成员都是整数值的对象。我做这些对象的数组。每个对象值填充有随机整数。

I have an object that has two members that are both integer values. I made an array of these objects. Each objects values are filled with random integers.

欲根据第一构件值的对象的数组进行排序。我会怎么做呢？

I want to sort the array of objects according to the first member value. How would I do this?

推荐答案

您使用.NET 3.5？如果是这样，这是因为容易

Are you using .NET 3.5? If so, it's as easy as:

array = array.OrderBy(x => x.MemberName).ToArray();

这将创建一个新的的阵列，虽然 - 如果任何其他code的老数组的引用，它仍然会看到未排序的数据

That will create a new array though - if any other code has a reference to the old array, it will still see the unsorted data.

另外，您也可以使用 的Array.Sort 方法，将就地对数组进行排序，以三种方式之一：

Alternatively, you can use the Array.Sort method which will sort the array in-place, in one of three ways:

• 请您类型实施 IComparable的＆LT; T＆GT; 允许对象本身与另一
  
• 创建的 的IComparer℃的情况下，T＆GT;
它可以比较该类型的任何两个物体

• 创建类型 比较℃的代表; T＆GT; 它可以比较该类型的任何两个物体

• Make your type implement IComparable<T> allowing an object to compare itself with another
• Create an instance of IComparer<T> which can compare any two objects of that type
• Create a delegate of type Comparison<T> which can compare any two objects of that type

最后一个可能是，如果你使用C＃3最简单的方法：

The last is probably the easiest solution if you're using C# 3:

Array.Sort(array, (x1, x2) => x1.MemberName.CompareTo(x2.MemberName));

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