Repopulate Entity Framework Navigation properties

Question

Hi I have an MVC app I'm calling a stored procedure from. The reason I'm using a stored procedure is because the query is quite complex and it already exists so I may as well use it.

It basically returns to me a :

IEnumerable<Activity>

which is good.

There is a one of many foreign key properties like:

AreaId

on this which gets populated.

However in my model I have the navigation property:

// Navigation properties
        public virtual Area Area { get; set; }

which of course isn't populated getting it via the stored procedure.

I'm wondering if there is an easy way to get these navigation properties populated.

I believe I have heard of some command you can call on you entity to refresh navigation properties.

http://stackoverflow.com/questions/1035677/using-a-stored-procedure-in-entity-framework-how-do-i-get-the-the-entity-to-have — Jayantha Lal Sirisena, Oct 12 '11 at 03:07

score 1 · Accepted Answer · answered Oct 12 '11 at 08:21

You can use this:

context.Entry(loadedEntity).Reference(l => l.Area).Load();

but it will not have nice performance if you call it for every entity in your enumeration because it will do separate query and database roundtrip for every Area you want to load. That is disadvantage of using stored procedures - once you go this way you should have another stored procedure to load all needed areas.

Repopulate Entity Framework Navigation properties

1 Answers1