public virtual IEnumerable <T> GetAll()
 {
     return(NorthwindDataAccess.LoadData <T>(SqlQuery));
 }
        public virtual int GetIntId(T entity)
        {
            var newId = NorthwindDataAccess.LoadData <int>(SqlQuery).FirstOrDefault();

            return(newId);
        }
 public virtual T Get(int id)
 {
     return(NorthwindDataAccess.LoadData <T>(SqlQuery).FirstOrDefault());
 }