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如何为dotnet核心联接中的“ on”赋予多个条件

[英]how to give multiple condition for “on” in dotnet core join

原文 2018-06-22 11:30:04 9 1 c#/ entity-framework-6/ asp.net-core-webapi

how to give multiple condition for "on" in dotnet core join like- 如何为dotnet核心中的“ on”赋予多个条件，例如-

from x in this.context.RegulatoryUpdates
join m in this.context.RegulatoryUpdateClient on **x.Id equals m.RegulatoryupdateId  and  id = 25** into m
from z in m.DefaultIfEmpty()

1 个解决方案

You need to create anonymous objects: 您需要创建匿名对象：

from x in this.context.RegulatoryUpdates
join m in this.context.RegulatoryUpdateClient on new { x.Id, id } equals new { Id = m.RegulatoryupdateId, id = 25 } into m
from z in m.DefaultIfEmpty()

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