/// <summary>
        /// 新增
        /// </summary>
        /// <param name="model"></param>
        /// <returns></returns>
        public string Add(V_tm_pm_dotask model)
        {
            using (tm_pm_dotaskDAL dal = new tm_pm_dotaskDAL())
            {
                if (model == null)
                    return string.Empty;
                tm_pm_dotask entity = ModelToEntity(model);
                entity.TASKID = string.IsNullOrEmpty(model.TASKID) ? Guid.NewGuid().ToString("N") : model.TASKID;

                return dal.Add(entity);
            }
        }