http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : Saving a single row Wed, 10 Jun 2026 17:29:45 -700 Wed, 08 Sep 2010 18:26:59 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=2131 http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8407#8407 Author: ting
Subject: 2131
Posted: 08-Sep-2010 at 6:26pm

Thanks for the help Mark.  You've always been great!

]]> Wed, 08 Sep 2010 18:26:59 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8407#8407 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8397#8397 Author: xkubr
Subject: 2131
Posted: 08-Sep-2010 at 6:15am

Yip, that worked. It just never occurred to me to have to create and pass in a list with a single item in order to save just 1 row.

Thank you.]]> Wed, 08 Sep 2010 06:15:05 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8397#8397 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8387#8387 Author: smi-mark
Subject: 2131
Posted: 07-Sep-2010 at 2:40pm

Can you not write a method such as this?

public static class EntityManagerExtensions
{
            public static SaveResult SaveSingle(this DomainModelEntityManager manager, object row)
             {
                 return manager.SaveChanges(new object() {row});
              }
}

or even

public static class EntityExtensions
{
            public static SaveResult SaveChanges(this IdeaBlade.EntityModel.Entity entity, object row)
             {
                 return entity.EntityAspect.EntityManager.SaveChanges(new object() {row});
              }
}

Now you call row.SaveChanges() or manager.SaveSingle(row)
]]> Tue, 07 Sep 2010 14:40:49 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8387#8387 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8377#8377 Author: xkubr
Subject: 2131
Posted: 07-Sep-2010 at 2:22am

Thank you for your post\reply.

We had considered this strategy already and it does not fit well with our requirements. Saving a single object\row from the collection using this method requires a separate list to be created. What we are looking for is a Save method exposed that accepts either a single object or the existing list and the index of the object to save. In the scenario I describe above this would allow for one row to be saved (updated) and any other rows (that may also have changes pending) are left unsaved. This is (unfortunately) a fairly strict business requirement.

Any thought or comments pls feel free to post them.]]> Tue, 07 Sep 2010 02:22:18 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8377#8377 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8376#8376 Author: smi-mark
Subject: 2131
Posted: 06-Sep-2010 at 5:47pm

If you only add the entity you are working with to the list, and then pass that to SaveChanges, it will only save one, not everything.]]> Mon, 06 Sep 2010 17:47:48 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8376#8376 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8368#8368 Author: xkubr
Subject: 2131
Posted: 06-Sep-2010 at 1:06am

I have just started working with DevForce 2010 so this question may be obvious to those with experience using this product. My question is simply: How do I save a single row in the database? I have a table (Ticket) that has been modeled along with all related tables. In my app the user has selected a row in a grid and made changes to the values. The user may have changed values for several rows in the grid but only needs to save one of the rows, not the entire "dataset".

I have implemented the Manager.SaveChanges, passing in an IEnumerable of Tickets but this saves all the row changes. The app is WPF, Windows, .Net 4.0, MVVM using a standard datagrid.

Can someone give me a pointer in the right direction?

Thanks.]]> Mon, 06 Sep 2010 01:06:43 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=2131&PID=8368#8368