/// <summary>
        /// 增加一条数据
        /// </summary>
        public bool Add(dbamet.Model.Admin model)
        {
            StringBuilder strSql = new StringBuilder();

            strSql.Append("insert into Admin(");
            strSql.Append("uid,upwd)");
            strSql.Append(" values (");
            strSql.Append("@uid,@upwd)");
            SqlParameter[] parameters =
            {
                new SqlParameter("@uid",  SqlDbType.VarChar, 50),
                new SqlParameter("@upwd", SqlDbType.VarChar, 50)
            };
            parameters[0].Value = model.uid;
            parameters[1].Value = model.upwd;

            int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);

            if (rows > 0)
            {
                return(true);
            }
            else
            {
                return(false);
            }
        }
        /// <summary>
        /// 更新一条数据
        /// </summary>
        public bool Update(dbamet.Model.Admin model)
        {
            StringBuilder strSql = new StringBuilder();

            strSql.Append("update Admin set ");
            strSql.Append("upwd=@upwd");
            strSql.Append(" where uid=@uid ");
            SqlParameter[] parameters =
            {
                new SqlParameter("@upwd", SqlDbType.VarChar, 50),
                new SqlParameter("@uid",  SqlDbType.VarChar, 50)
            };
            parameters[0].Value = model.upwd;
            parameters[1].Value = model.uid;

            int rows = DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);

            if (rows > 0)
            {
                return(true);
            }
            else
            {
                return(false);
            }
        }
        /// <summary>
        /// 得到一个对象实体
        /// </summary>
        public dbamet.Model.Admin GetModel(string uid)
        {
            StringBuilder strSql = new StringBuilder();

            strSql.Append("select  top 1 uid,upwd from Admin ");
            strSql.Append(" where uid=@uid ");
            SqlParameter[] parameters =
            {
                new SqlParameter("@uid", SqlDbType.VarChar, 50)
            };
            parameters[0].Value = uid;

            dbamet.Model.Admin model = new dbamet.Model.Admin();
            DataSet            ds    = DbHelperSQL.Query(strSql.ToString(), parameters);

            if (ds.Tables[0].Rows.Count > 0)
            {
                if (ds.Tables[0].Rows[0]["uid"] != null && ds.Tables[0].Rows[0]["uid"].ToString() != "")
                {
                    model.uid = ds.Tables[0].Rows[0]["uid"].ToString();
                }
                if (ds.Tables[0].Rows[0]["upwd"] != null && ds.Tables[0].Rows[0]["upwd"].ToString() != "")
                {
                    model.upwd = ds.Tables[0].Rows[0]["upwd"].ToString();
                }
                return(model);
            }
            else
            {
                return(null);
            }
        }