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

            strSql.Append("insert into Publishers(");
            strSql.Append("Name)");
            strSql.Append(" values (");
            strSql.Append("@Name)");
            strSql.Append(";select @@IDENTITY");
            SqlParameter[] parameters =
            {
                new SqlParameter("@Name", SqlDbType.NVarChar, 200)
            };
            parameters[0].Value = model.Name;

            object obj = DbHelperSQL.GetSingle(strSql.ToString(), parameters);

            if (obj == null)
            {
                return(1);
            }
            else
            {
                return(Convert.ToInt32(obj));
            }
        }
        /// <summary>
        /// 得到一个对象实体
        /// </summary>
        public Model.Publisher GetModel(int Id)
        {
            StringBuilder strSql = new StringBuilder();

            strSql.Append("select  top 1 Id,Name from Publishers ");
            strSql.Append(" where Id=@Id ");
            SqlParameter[] parameters =
            {
                new SqlParameter("@Id", SqlDbType.Int, 4)
            };
            parameters[0].Value = Id;

            Model.Publisher model = new Model.Publisher();
            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.Name = ds.Tables[0].Rows[0]["Name"].ToString();
                return(model);
            }
            else
            {
                return(null);
            }
        }
        /// <summary>
        /// 更新一条数据
        /// </summary>
        public void Update(Model.Publisher model)
        {
            StringBuilder strSql = new StringBuilder();

            strSql.Append("update Publishers set ");
            strSql.Append("Name=@Name");
            strSql.Append(" where Id=@Id ");
            SqlParameter[] parameters =
            {
                new SqlParameter("@Id",   SqlDbType.Int,      4),
                new SqlParameter("@Name", SqlDbType.NVarChar, 200)
            };
            parameters[0].Value = model.Id;
            parameters[1].Value = model.Name;

            DbHelperSQL.ExecuteSql(strSql.ToString(), parameters);
        }