ASP.NET asp控件的数据绑定泛型

            JobService jobBll = new JobService();
            List<T_Job> jobList = jobBll.QueryAll();
            selJob.DataSource = jobList;
            selJob.DataTextField = "JobName";
            selJob.DataValueField = "JobID";
            selJob.DataBind();
            selJob.Items.Insert(0, new ListItem("请选择", "0"));

public class JobService : PagerHelper
    {
        IJobProvider dal = new JobProvider();

        public JobService()
        { }

        #region 自定义
        /// <summary>
        /// 查询
        /// </summary>       
        /// <returns></returns>
        public List<T_Job> QueryAll() 
        {            
            return this.GetEntitys<T_Job>("select * from T_Job order by sortIndex", null).ToList();
        }
        #endregion
        /// <summary>
        /// 单条插入数据
        /// </summary>
        /// <param name="entity">实体</param>
        /// <returns></returns>
        public int Insert(T_Job entity)
        {
            if (dal.Insert(entity) > 0)
            {
                return 1;
            }
            return -1;
        }

        /// <summary>
        /// 批量插入数据
        /// </summary>
        /// <param name="entities">实体</param>
        /// <returns></returns>
        public int Insert(IList<T_Job> entities)
        {
            if (dal.Insert(entities) > 0)
            {
                return 1;
            }
            return -1;
        }

        /// <summary>
        /// 单条删除数据
        /// </summary>
        /// <param name="entity"></param>
        /// <returns></returns>
        public int Delete(T_Job entity)
        {
            return dal.Delete(entity);
        }

        /// <summary>
        /// 批量删除数据
        /// </summary>
        /// <param name="entities"></param>
        /// <returns></returns>
        public int Delete(IList<T_Job> entities)
        {
            return dal.Delete(entities);
        }
        
        /// <summary>
        /// 单条更新数据(自动插入数据到任务备注记录表)
        /// </summary>
        /// <param name="entity">更改实体</param>
        /// <returns></returns>
        public int Update(T_Job entity)
        {
            return dal.Update(entity);
        }

        /// <summary>
        /// 批量更新数据(自动插入数据到任务备注记录表)
        /// </summary>
        /// <param name="entities">更改实体</param>
        /// <returns></returns>
        public int Update(IList<T_Job> entities)
        {
            return dal.Update(entities);
        }
        
        /// <summary>
        /// 传人DateSet获取实体
        /// </summary>
        /// <param name="ds"></param>
        /// <returns></returns>
        public IList<T_Job> GetRowEntity(DataSet ds)
        {
            return dal.GetRowEntity(ds);
        }


        /// <summary>
        /// 根据id获取结果
        /// </summary>
        /// <param name="id">查询id</param>
        /// <returns></returns>
        public T_Job selToID<T>(T JobID)
        {
            return dal.selToID(JobID);
        }
    }