DevForce Community Forum : EntityReferenceStrategy on Navigation properties causing problems http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce 2010 : EntityReferenceStrategy on Navigation properties causing problems Wed, 13 May 2026 09:43:41 -700 Wed, 22 Feb 2012 19:05:38 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=3284 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ EntityReferenceStrategy on Navigation properties causing problems : Thank you for the quick reply.... http://www.ideablade.com/forum/forum_posts.asp?TID=3284&PID=12745#12745 Author: ajhops
Subject: 3284
Posted: 22-Feb-2012 at 7:05pm

Thank you for the quick reply.]]> Wed, 22 Feb 2012 19:05:38 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3284&PID=12745#12745 EntityReferenceStrategy on Navigation properties causing problems : Hi ajhops,I did a test in 6.1.2.0... http://www.ideablade.com/forum/forum_posts.asp?TID=3284&PID=12742#12742 Author: DenisK
Subject: 3284
Posted: 22-Feb-2012 at 4:55pm

Hi ajhops,

I did a test in 6.1.2.0 and it threw the same exception. Did the same test in 6.1.5.0 and it passed. So it looks like this has been fixed in 6.1.5.0.
]]> Wed, 22 Feb 2012 16:55:17 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=3284&PID=12742#12742 EntityReferenceStrategy on Navigation properties causing problems : I am using 6.1.2.0. I hope you... http://www.ideablade.com/forum/forum_posts.asp?TID=3284&PID=12736#12736 Author: ajhops
Subject: 3284
Posted: 22-Feb-2012 at 12:30pm

I am using 6.1.2.0. I hope you can tell me if I'm doing something wrong or if this is a bug (and if it is fixed in a later build).

The summary is: when I set a reference strategy to DoNotLoad for one navigation property on an entity, other navigation properties on that entity begin to misbehave.

My parent entity is called "Manual" it has child "Document" and "Author" entities. I have done the following in my singleton repository:

Manual.PropertyMetadata.Documents.ReferenceStrategy = new EntityReferenceStrategy(EntityReferenceLoadStrategy.DoNotLoad, MergeStrategy.OverwriteChanges);

I want to control the loading of Documents myself, however I want Authors to behave as a default reference. When I set the ReferenceStrategy for Documents, I get exceptions when I try to use PendingEntityListResolved event for Authors

public void LoadAuthorsAsync(Action<IEnumerable<Author>> onSuccess)		{			if (Authors.IsPendingEntityList)			{				Authors.PendingEntityListResolved += (s, e) => onSuccess(Authors); //THROWS EXCEPTION			}			else			{				onSuccess(Authors);			}		}
{System.ArgumentNullException: Value cannot be null.Parameter name: member   at IdeaBlade.EntityModel.EntityQueriedEventArgs.get_Results()}

#region Authors property     /// <summary>Gets the Authors. </summary>    [Bindable(false)]    [Display(Name="Authors", AutoGenerateField=false)]    [DataMember]    public IbEm.RelatedEntityList<Author> Authors {      get { return PropertyMetadata.Authors.GetValue(this); } //LAST LINE IN DEBUGGER BEFORE EXCEPTION    }    #endregion Authors property

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