LINQ查询语法 [英] LINQ query syntax

问题描述

我有两个不同的列表，其中一个是像List<int> idsList中一样的一堆ID，但是另一个是像List<MyObject> myObjectList这样的对象列表，其中的对象看起来像这样:

I have two different lists where one is a bunch of ID's as in a List<int> idsList, the other however is a list of objects like List<MyObject> myObjectList where the object looks like this:

class MyObject{
    private List<int> ids;

     public MyObject(List<int> ids){
      this.ids = ids;
     }

     public List<int> Ids{
       get{
          return ids;
       }
     }
}

如您所见，每个对象可以包含一个或多个ID(永远不能为零或null).因此，我最后需要知道myObjectList中的哪些对象具有来自idsList的任何ID. 到目前为止，如果我这样做:

As you can see each object can contain one or multiple IDs (never zero or null ids). So what I need at the end is to know what objects in myObjectList have any id(s) from my idsList. So far if I do:

var ids = from g in onScreen where g.Ids.Contains(myIntVariable) select g;

它将给我包含myIntVariable的对象的列表.我不知道该怎么做，就是将idsList的内容与MyObject中的列表进行匹配. 谢谢！

it would give me a list of the object(s) that contain myIntVariable. What I do not know how to do is to match the content of the idsList with the list in MyObject. Thanks!

推荐答案

一种方法:

var listOfMyObjectsContainingAnIdFromIdsList = myObjectList.Where(myObject => myObject.Ids.Any(id => idsList.Contains(id)));

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