public static List <QcProductType> GetProductType(string expr, QcProductLevel parent)
        {
            var pls = DbHelper.Query("Select * from " + TableName + " where " + expr);

            return((from p in pls select new QcProductType(p)
            {
                Parent = parent
            }).ToList());
        }
        public static List <QcProductType> GetProductType(QcProductLevel level)
        {
            string 产品级别编码 = level.Code;

            return(GetProductType("产品级别编码='" + 产品级别编码 + "'", level));
        }
 public QcProductType(QcProductLevel parent) : base(null, TableName)
 {
     Parent = parent;
 }