我正在使用这个模式https://gist.github.com/pmbanugo/8456744#file-ientityrepository-cs，函数是

IEnumerable<T> GetAll(
            Expression<Func<T, bool>> filter = null,
            Func<IQueryable<T>, IOrderedQueryable<T>> orderBy = null,
            string includeProperties = null
            );

字符串
我想传递参数orderBy
_unitOfWork.GetAll(/*please pass orderby paramter here*/);个