Implementing Generic Repository using Entity framework code first

Question

I'm experiencing my first try on implementing Generic Repository Pattern and Unit of framework. I'm not using MVC on the project in hand. Please take a look at this method included in Generic Repository class:

public virtual IEnumerable<TEntity> Get(
        Expression<Func<TEntity, bool>> filter = null,
        Func<IQueryable<TEntity>, IOrderedQueryable<TEntity>> orderBy = null,
        string includeProperties = "")
    {
        IQueryable<TEntity> query = dbSet;

        if (filter != null)
        {
            query = query.Where(filter);
        }

        foreach (var includeProperty in includeProperties.Split
            (new char[] { ',' }, StringSplitOptions.RemoveEmptyEntries))
        {
            query = query.Include(includeProperty);
        }

        if (orderBy != null)
        {
            return orderBy(query).ToList();
        }
        else
        {
            return query.ToList();
        }
    }

it must be a powerful method and accomplishes the goal of DRY well. My problem is that, I cannot order the result as descending? Can anyone write some lines of code to help me on this? Thanks,

Answer 1

Have a look at this: http://prodinner.codeplex.com/ and this http://efmvc.codeplex.com/. These projects are good examples of simple architecture and you can see how generic repository is implemented and how it is used.