EntityFramework 7 – preloading objects via Reflection

I'm trying to make EntityFramework detect the needed properties and load them in a Run-time in my Repository class. As I'm working on EntityFramework 7, Is hack a lack of functions in comparison with EF6 so I've decided to use Reflection and try 2 possible ways to solve the problem. First way is to generate MemberExpression expression and put it into query.Include(expression); – It compiles fine but information Isn't loaded. Here is my source:

public virtual async Task<ActionResult> LoadAll()
        {
            using (var context = new CoreDataContext())
            {
                var data = context.Set<TEntity>();

                foreach (var prop in typeof(TEntity).GetProperties())
                {
                    //For testing purposes!
                    //I'm testing this only for my Customer class.
                    if (prop.Name != "Customer") continue;

                    var type = typeof(TEntity);
                    var param = Expression.Parameter(type, "x");
                    var memberAccess = Expression.PropertyOrField(param, prop.Name);
                    var expression = Expression.Lambda<Func<TEntity, Customer>>(memberAccess, param);

                    data.Include(expression);
                }

                await data.LoadAsync();
                return Json(data, JsonConfig.GetSettings(typeof(TEntity)));
            }
        }

The second way is to generate context.Set<Entity>.Load() somehow via reflection explicitly (where Entity should be classes of needed properties) but I have no idea how to execute the context.Set<Entity>.Load() in a run-time. Could you tell me if there is another way to preload some data in Entity Framework 7 or how can I use reflection (If it even possible) to invoke context.Set<Entity>.Load()?