EntityFramework Get object by ID?

Question

Is it possible with Generics to get an object from my EntityFramework without knowing the type?

I\'m thinking of something along the lines of:

public         


        

Answer 1

It's hard to make a completely generic solution because Entities can have composite keys, but this will work for a simple single key case.

The key is to restrict T to be of type System.Data.Objects.DataClasses.EntityObject, which then has as EntityKey property (which represents the primary key).

static T GetById(object id) where T : EntityObject
{
    using (var context = new MyEntities())
    {
        return context.CreateObjectSet()
            .SingleOrDefault(t => t.EntityKey.EntityKeyValues[0].Value == id);
    }
}