/// <summary>
        /// 更新一条数据
        /// </summary>
        public bool Update(System.Model.t_city3 model)
        {
            StringBuilder strSql = new StringBuilder();

            strSql.Append("update t_city3 set ");

            strSql.Append(" id = @id , ");
            strSql.Append(" areaID = @areaID , ");
            strSql.Append(" area = @area , ");
            strSql.Append(" father = @father  ");
            strSql.Append(" where id=@id  ");

            SqlParameter[] parameters =
            {
                new SqlParameter("@id",     SqlDbType.Int,       4),
                new SqlParameter("@areaID", SqlDbType.NVarChar, 50),
                new SqlParameter("@area",   SqlDbType.NVarChar, 50),
                new SqlParameter("@father", SqlDbType.NVarChar, 50)
            };

            parameters[0].Value = model.id;
            parameters[1].Value = model.areaID;
            parameters[2].Value = model.area;
            parameters[3].Value = model.father;
            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 System.Model.t_city3 GetModel(int id)
        {
            StringBuilder strSql = new StringBuilder();

            strSql.Append("select id, areaID, area, father  ");
            strSql.Append("  from t_city3 ");
            strSql.Append(" where id=@id ");
            SqlParameter[] parameters =
            {
                new SqlParameter("@id", SqlDbType.Int, 4)
            };
            parameters[0].Value = id;


            System.Model.t_city3 model = new System.Model.t_city3();
            DataSet ds = DbHelperSQL.Query(strSql.ToString(), parameters);

            if (ds.Tables[0].Rows.Count > 0)
            {
                if (ds.Tables[0].Rows[0]["id"].ToString() != "")
                {
                    model.id = int.Parse(ds.Tables[0].Rows[0]["id"].ToString());
                }
                model.areaID = ds.Tables[0].Rows[0]["areaID"].ToString();
                model.area   = ds.Tables[0].Rows[0]["area"].ToString();
                model.father = ds.Tables[0].Rows[0]["father"].ToString();

                return(model);
            }
            else
            {
                return(null);
            }
        }
        /// <summary>
        /// 获得数据列表
        /// </summary>
        public List <System.Model.t_city3> DataTableToList(DataTable dt)
        {
            List <System.Model.t_city3> modelList = new List <System.Model.t_city3>();
            int rowsCount = dt.Rows.Count;

            if (rowsCount > 0)
            {
                System.Model.t_city3 model;
                for (int n = 0; n < rowsCount; n++)
                {
                    model = new System.Model.t_city3();
                    if (dt.Rows[n]["id"].ToString() != "")
                    {
                        model.id = int.Parse(dt.Rows[n]["id"].ToString());
                    }
                    model.areaID = dt.Rows[n]["areaID"].ToString();
                    model.area   = dt.Rows[n]["area"].ToString();
                    model.father = dt.Rows[n]["father"].ToString();


                    modelList.Add(model);
                }
            }
            return(modelList);
        }
        /// <summary>
        /// 增加一条数据
        /// </summary>
        public void Add(System.Model.t_city3 model)
        {
            StringBuilder strSql = new StringBuilder();

            strSql.Append("insert into t_city3(");
            strSql.Append("id,areaID,area,father");
            strSql.Append(") values (");
            strSql.Append("@id,@areaID,@area,@father");
            strSql.Append(") ");

            SqlParameter[] parameters =
            {
                new SqlParameter("@id",     SqlDbType.Int,       4),
                new SqlParameter("@areaID", SqlDbType.NVarChar, 50),
                new SqlParameter("@area",   SqlDbType.NVarChar, 50),
                new SqlParameter("@father", SqlDbType.NVarChar, 50)
            };

            parameters[0].Value = model.id;
            parameters[1].Value = model.areaID;
            parameters[2].Value = model.area;
            parameters[3].Value = model.father;
            DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
        }
 /// <summary>
 /// 更新一条数据
 /// </summary>
 public bool Update(System.Model.t_city3 model)
 {
     return(dal.Update(model));
 }
 /// <summary>
 /// 增加一条数据
 /// </summary>
 public void  Add(System.Model.t_city3 model)
 {
     dal.Add(model);
 }