使用排序依据＆LT项目排序数组;＆GT; [英] Sort array of items using OrderBy<>

问题描述

我有一个项目数组，我想整理自己的属性之一。
我可以访问使用的 item.Fields [字段名]的项目属性。值的属性返回为一个字符串，但我可以把它转换为一个int。

I have an array of items and I would like to sort on one of their properties. I can access the items property using "item.Fields["FieldName"].Value" the property is returned as a string but I can cast it to an int.

我在排序依据＆LT一看;>，但我不知道如何使用它的想法。

I had a look at OrderBy<> but I have no idea of how to use it.

推荐答案

需要明确的是，排序依据将不到位数组排序 - 它会返回一个新的序列这是一个整理的复制的数组中。如果可以的话，那么你要的的东西的，如：

To be clear, OrderBy won't sort the array in place - it will return a new sequence which is a sorted copy of the array. If that's okay, then you want something like:

var sorted = array.OrderBy(item => item.Fields["FieldName"].Value);

在另一方面，我不明白您的评论，该属性返回一个字符串，但您可以将其转换为一个int - 你可以不投字符串整数，你要分析它们。如果这是你的意思，你可能想：

On the other hand, I don't understand your comment that the property is returned as a string but that you can cast it to an int - you can't cast strings to ints, you have to parse them. If that's what you meant, you probably want:

var sorted = array.OrderBy(item => int.Parse(item.Fields["FieldName"].Value));

如果你想，作为一个数组，你可以叫 ToArray的（）算账：

If you want that as an array, you can call ToArray() afterwards:

var sorted = array.OrderBy(item => int.Parse(item.Fields["FieldName"].Value))
                  .ToArray();

另外，您可以使用的Array.Sort 如果你想就地进行排序，但会有些混乱。

Alternatively you could use Array.Sort if you want to sort in-place, but that will be somewhat messier.

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