static public void Save(LeadDocumentList document)
        {
            if (document.ID == 0)
            {
                DbContextHelper.DbContext.Add(document);
            }

            DbContextHelper.DbContext.SaveChanges();
        }
        public static void Delete(int leadID, int id)
        {
            LeadDocumentList document = (from x in DbContextHelper.DbContext.LeadDocumentList
                                         where x.LeadId == leadID &&
                                         x.DocumentListId == id
                                         select x
                                         ).FirstOrDefault <LeadDocumentList>();

            if (document != null)
            {
                DbContextHelper.DbContext.DeleteObject(document);

                DbContextHelper.DbContext.SaveChanges();
            }
        }