如何使用linq方法语法进行子选择

Question

我如何使用方法语法进行subselect linq，我曾试图谷歌，但没有运气。这是我的SQL查询：

select * from dwvtextures where id in (select TextureId from dwvtexturetag where TagId = 2)

Answer 1

var idList = dwvtexturetag.Select(x => x.TextureId).Where(x => x.TagId = 2);

var result = dwvtextures.Where(d => idList.Contains(d.Id));

使用查询语法：

from d in dwvtextures
where (from x in dwvtexturetag
       where x.TagId = 2
       select x.TextureId).Contains(d.Id)
select d;

Answer 2

var innerQuery = from dt in dwvtexturetag  where dt.TagId = 2 select dt.TagId;
var result = from f in dwvtextures where innerQuery.Contains(f.TagId) select f;