Menu
Ok, I'm about to smash my keyboard with a hammer over this. I decided to play with EF this weekend and I started a project in 4.0. I find out 4.1 is out so I download and install the package.
Imagine my surprise when I go to use the Load() method in the dbExtensions and it can't find it. So I add a reference to the EntityFramework binary that the installer created, remove the System.Data.Entity reference from the project, rebuild, and it says
"The type 'System.Data.Objects.ObjectContext' is defined in an assembly that is not referenced. You must add a reference to assembly 'System.Data.Entity, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'."
I tried to regenerate my model, I tried removing things, I tried directly referencing the 4.1 via usings. Nothing works.
I'm obviously missing something basic. How in the heck do I tell visual studio to use the 4.1 framework??!!
543
Entity Framework supports three ways to load related data - eager loading, lazy loading and explicit loading. The techniques shown in this topic apply equally to models created with Code First and the EF Designer.
The Find method on DbSet uses the primary key value to attempt to find an entity tracked by the context. If the entity is not found in the context then a query will be sent to the database to find the entity there. Null is returned if the entity is not found in the context or in the database.
Explicit Loading is a technique we query and load the related entities with an explicit call. Explicit loading works very similar to Lazy Loading, but the loading of the related entities happens only after an explicit call. The loading only when we invoke the Load method of the related entity's DBEntityEntry object.
Eager loading means that the related data is loaded from the database as part of the initial query. Explicit loading means that the related data is explicitly loaded from the database at a later time.
I managed to find the missing .Load() function by adding the following:
using System.Data.Entity;
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
