Convert double inner join SQL query to LINQ query

Question

1.80/5 (2 votes)

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SELECT c.* , v.*
  FROM UserEnrolleds u
  INNER JOIN Courses c ON u.CourseId = c.id
  INNEr JOIN Videos v ON v.CourseID = c.Id
  WHERE u.UsersID = '8851d572-eaff-4a84-9ec8-aa144fecfea2'

What I have tried:

please help me this how to convert sql to linq

Posted 10-Sep-19 22:57pm

tyson Hamda

Updated 10-Sep-19 23:43pm

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Comments

F-ES Sitecore 11-Sep-19 5:00am

google "linq join", this is extensively documented.

tyson Hamda 11-Sep-19 5:23am

I did but the problem is I never work with these LINQ Statements before. So if you or anyone can convert this query for me. Thanks

jimmson 11-Sep-19 5:43am

There's always the first time for everybody. Better start learning ;)

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dnxit · Accepted Answer · 2019-09-10T23:44:00

You can do something like this

C#

var resultList = (from u in context.UserEnrolleds
	join c in context.Courses on u.CourseId equals c.Id
	join v in context.Videos on v.CourseId equals c.Id
    where u.UserId == "8851d572-eaff-4a84-9ec8-aa144fecfea2"
	select new { 
           CourseName = c.CourseName, 
           VideoUrl = v.Url, 
           .......
           ......
        }).ToList();

C#

select new

'll give you anonymous type then you can map it to data transfer object.
Or map it at the same time like

C#

select new CourseVideoDto {