实体服务查询返回true或false

Question

我如何得到这样的简单查询

from asg in context.assigmentGen
                            join agc in context.assignmentContact on asg.contact equals agc.contact
where agc.contact = "123"

我怎么能让它返回true或false？

Answer 1

你试过这个吗？这取决于你希望它何时返回true或false：）

(from asg in context.assigmentGen
 join agc in context.assignmentContact on asg.contact equals agc.contact
 where agc.contact = "123").Any()