DevForce Community Forum : Saving many-to-many relationship http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : Saving many-to-many relationship Sun, 12 Apr 2026 21:18:03 -700 Fri, 22 Jul 2011 08:39:42 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2841 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ Saving many-to-many relationship : Hi CJBriers,This is a bug that... http://www.ideablade.com/forum/forum_posts.asp?TID=2841&PID=11267#11267 Author: sbelini
Subject: 2841
Posted: 22-Jul-2011 at 8:39am

Hi CJBriers,

This is a bug that has been fixed.

DevForce 6.1.2 will have the fix and will be available early in August.

Silvio.
]]> Fri, 22 Jul 2011 08:39:42 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2841&PID=11267#11267 Saving many-to-many relationship : Let's say we have a many-to-many... http://www.ideablade.com/forum/forum_posts.asp?TID=2841&PID=11266#11266 Author: CJBriers
Subject: 2841
Posted: 22-Jul-2011 at 7:38am

Let's say we have a many-to-many relationship between Person and Pet entities (with no payload).  When adding an existing Pet entity to a Person and saving the Person entity:

aPerson.Pets.Add(aPet);
EM.Instance.SaveChangesAsync(new [] {aPerson}); //we're using singleton pattern

This causes a duplicate (same data, different ID) aPet entity to be saved to the DB.  

However, if I do this:

aPerson.Pets.Add(aPet);
EM.Instance.SaveChangesAsync(); 

No duplicate entry is saved to the DB.  Due to the nature of our application, I really prefer saving only the aPerson entity and not the Pet entities. Any way to do this?


Edited by CJBriers - 03-Aug-2011 at 6:48am]]> Fri, 22 Jul 2011 07:38:13 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2841&PID=11266#11266