Linq查询包含对象列表的对象列表 [英] Linq query a List of objects containing a list of object

问题描述

我有一个名为绉的foo列表.我想返回foo，其中bar.doritos == "coolRanch"

I have a list of foo called crepes. I want to return foo where bar.doritos == "coolRanch"

class foo
{
    List<bar> item;
    string candy;
    string beer;
}

class bar
{
    string doritos;
    string usb;
}

var item = crepes.item.Where(x => x.doritos == "coolRanch").FirstOrDefault();

从其他线程，我整理了上面的linq查询，但是crepes.item引发错误. 列表不包含'item'的定义，也没有包含第一个参数的'item'的定义...

From other threads, i've pieced together the above linq query, but crepes.item throws an error. "List does not contain a definition for 'item' and no definition for 'item' accepting first argument...

推荐答案

鉴于可丽饼是List<Foo>，您需要在linq查询中添加一个附加级别.

Given that crepes is a List<Foo>, you need to add an additional level to the linq query.

var item = crepes.Where(a => a.item.Any(x => x.doritos == "coolRanch")).FirstOrDefault();

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