如何使用LINQ从两个表中编写条件查询

Question

两个数据库中有两个表 促销：代码，来源，经纪人 BrokerNo：Id，Name，BrokerNo 我要查询的是所有BrokerNo.Name记录满足Promotion.broker = BrokerNo.BrokerNo和Promotion.source =“asdf”的条件 如何使用LINQ编写查询语句？

Answer 1

from promotion in Promotion
from brokerNo in BrokerNo
where promotion.source == "asdf" && promotion.broker == brokerNo.BrokerNo
select brokerNo.Name