Linq - 在嵌套集合中查找元素

Question

我有一个通用列表 - SupportedTypeGroups。

每个SupportedTypeGroup都有SupportedTypes属性（SupportedType的通用列表）。

如何构建Linq查询以找到具有所需名称的SupportedType？

Answer 1

var result = SupportedTypeGroups
             .SelectMany(g => g.SupportedTypes)
             .FirstOrDefault(t => t.Name == "TypeName");

Answer 2

SupportedTypeGroups
  .SelectMany(s => s.SupportedTypes)
  .Where(s => s.name == "TheName");

Answer 3

假设SupportedTypes是IEnumerable<SupportedType>

from g in SupportedTypeGroups
where g.SupportedTypes.Where(t => t.Name == "magicName")
select g;

假设SupportedTypes只是SupportedType属性

from g in SupportedTypeGroups
where g.SupportedTypes.Name == "magicName"
select g;

Asasuming你只需要SupportedType

from tg in SupportedTypeGroups
from t in tg.SupportedTypes
where t.Name == "magicName"
select t;