Question

I’m trying to create a generic method to retrieve a entity model. So what I’m trying to create a method that have the ability to take an entity model type and return the data of that type.

Here’s what I’ve have so far.

        public List<T> Generic<T>(List<T> users) where T : List<T>, new()
    {
        using (var entities = new TestDBEntities())
        {
            var enUsers = entities.Users; // How to replace this to make it generic?
            return enUsers.ToList();
        }
    }

Thanks!

Answer 1

Are you using version 4.1 or later (which has DbContext)?

If not, or entities is ObjectContext, you can find the ObjectSet via Reflection, something like this:

var objectSet = entities.GetType( ).GetProperties( )
    .Where( p => p.PropertyType.IsGenericType 
         && p.PropertyType.GetGenericArguments( )[ 0 ].Name == typeof( T ).Name )
    .Select( p => p.GetValue( entities, null ) as ObjectSet<T> )
    .First( );
return objectSet.ToList( );