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Add entity to NavigationEntityProperty without retrieving values
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murray.bryant View Drop Down
Groupie
Groupie


Joined: 11-Jan-2012
Location: Australia
Posts: 44 		Post Options Post Options   Quote murray.bryant Quote  Post ReplyReply Direct Link To This Post Topic: Add entity to NavigationEntityProperty without retrieving values
    Posted: 04-Apr-2013 at 2:55pm
thanks that works great
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sbelini View Drop Down
IdeaBlade
IdeaBlade
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Joined: 13-Aug-2010
Location: Oakland
Posts: 786 		Post Options Post Options   Quote sbelini Quote  Post ReplyReply Direct Link To This Post Posted: 04-Apr-2013 at 10:33am
Murray,

If you don't want the navigation property to retrieve entities from the database, you could force entity to act as if all its Notes have already been loaded: 


EntityType.PropertyMetadata.Notes.GetEntityReference(entity).IsLoaded = true;


You can find additional information about navigation properties and data retrieval at http://drc.ideablade.com/devforce-2012/bin/view/Documentation/navigation-properties-data-retrieval.
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murray.bryant View Drop Down
Groupie
Groupie


Joined: 11-Jan-2012
Location: Australia
Posts: 44 		Post Options Post Options   Quote murray.bryant Quote  Post ReplyReply Direct Link To This Post Posted: 03-Apr-2013 at 11:46pm
I have the following code

  NavigationEntityProperty noteProp =
                        entity.EntityAspect.EntityMetadata.NavigationProperties.FirstOrDefault(
                            p => string.Equals(p.Name, "Notes"));
  var list = noteProp.GetValue(entity) as IList;

 list.Add(dSourceNote);

When I cast as IList the list is populated from the database.

I have no need to access the other values and for performance reasons in this case I would like to just add to the navigationentityproperty without selecting the other values from the database.

Is there any way I can do this?

thanks

Murray
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