清单＆LT;串GT;复杂的分类 [英] List<string> complex sorting

问题描述

我有一个列表＆LT;串＆GT; 尺寸，说XS，S，M，L，XL，XXL，英国10，英国12等

I have a List<string> of sizes, say XS, S, M, L, XL, XXL, UK 10, UK 12 etc

我要的是迫使为了是上面，无论列表中的项目的顺序，我想我需要一个IComparable的运营商，但不确定。

What I want is to force the order to be that of above, regardless of the order of items in the list, I think I need a IComparable operator but unsure.

理想我想与在它可以引用正确的顺序另一个列表它的'地方'在列表并重新排序本身，如果它不存在，则默认为A-Z

Ideally I want to have another List with the correct order in which it can reference it's 'place' in the list and re-sort itself, if it doesn't exist it will default to A-Z

推荐答案

在你希望他们在，然后通过其大小的数组中的位置衬衫排序顺序创建大小的数组：

Create an array of sizes in the order you want them to be in, then sort the shirts by the position of their sizes in that array:

string[] sizes = new [] {"XS", "S", "M", "L", "XL", "XXL", "UK 10", "UK 12"};

var shirtsInOrder = shirts
                        .OrderBy(s=>sizes.Contains(s) ? "0" : "1")  // put unmatched sizes at the end
                        .ThenBy(s=>Array.IndexOf(sizes,s))  // sort matches by size
                        .ThenBy(s=>s); // sort rest A-Z

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