Comments on: LINQ – Cross Data Context JOIN, A Solution

By: Stuart

Stuart — Thu, 04 Feb 2010 15:52:19 +0000

Thanks for this post. Very concise, easy to understand. Just what i needed!

By: Ashvini

Ashvini — Wed, 28 Oct 2009 09:26:40 +0000

Thanks. It was really helpful and easy to understand.

By: Yam

Yam — Thu, 13 Aug 2009 15:16:47 +0000

Thanks for the trick, very usefull

By: mrnon

mrnon — Sat, 11 Jul 2009 13:18:19 +0000

You saved me! Thanks!

By: Aliya and Arpan

Aliya and Arpan — Wed, 17 Jun 2009 19:57:51 +0000

THANKS MAN!

By: Jason Heine

Jason Heine — Tue, 26 May 2009 13:17:40 +0000

Yes, doing it like this has some drawbacks such as the one you explained. The main purpose was to show that if you needed to do a join on 2 seperate data contexts, it could be done. I have updated my post to include this information as well as a screen shot to show SQL profiler during the execution. Thanks for the feedback!

By: Slava B.

Slava B. — Mon, 25 May 2009 21:35:51 +0000

Thank you, it’s intresting method. But I have one notice.
In

var query = from a in GetTableA()
join b in GetTableB()
on a.PrimaryKeyA equals b.TableAJoinValue
select b;

Each method GetTable*() executes SQL query. It always happens when you cast IQueryable to IEnumerable. Consequently you join two arrays which filter by “a.PrimaryKeyA == b.TableAJoinValue”.