LINQ - 数组属性包含元素从另一个数组 [英] LINQ - array property contains element from another array

问题描述

我有一个对象（产品），类型为数组的物业买卖资讯
例如product.tags = {TAG1，标签2，tag9}

I have a object (product), with a property of type 'array'
e.g. product.tags = {"tag1","tag2","tag9"}

我输入标签的数组筛选依据。

I have an array of input tags to filter on.

...但是这并不完全工作：

... but this is not quite working:

List<string> filterTags = new List<string>() { "tag1", "tag3" };

var matches = from p in products
  where p.Tags.Contains(filterTags)
  select p;

任何建议？
谢谢你。

Any recommendations? Thanks.

推荐答案

什么是包含真正的意思来实现？不要在标签所有项目需要 filterTags 存在吗？或者至少是其中之一吗？对于后者使用任何和前使用所有。你的其中，行将​​更改为：

What is the Contains really meant to achieve? Do all items in Tags need to exist in filterTags? Or at least one of them? For the latter use Any and for the former use All. Your where line would change to:

where p.Tags.Any(tag => filterTags.Contains(tag))

或

where p.Tags.All(tag => filterTags.Contains(tag))

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