Method-Based Query Syntax Examples: Join Operators 03/30/2017 all In this article The examples in this topic demonstrate how to use the Join and Group...
https://docs.microsoft.com/en-us/dotnet/framework/data/adonet/ef/language-reference/method-based-query-syntax-examples-join-operators
* Join * GroupJoin * AdventureWorks Sales Model * GroupJoin * GroupJoin * Queries in LINQ to Entities