Linq删除整张表



//清空数据库
        public bool Delete()
        {
            using (Weixin_Entities qe = new Weixin_Entities())
            {
                var data = qe.tbSalaryUpload.Where(a => a.ID != null);

                foreach (var item in data)
                {
                    qe.tbSalaryUpload.DeleteObject(item);
                }
                int count = qe.SaveChanges();
                return count > 0;
            }
        }