public ActionResult Create(ProjectStageDTO entity)
        {
            var errors = "B000";
            string message = string.Empty;

            if (Const.IsNullOrEmpty(entity.Name))
            {
                errors = "B001";
                message = "项目阶段名称不能为空。";
            }

            using (DataClassesDataContext data = new DataClassesDataContext())
            {
                if (data.ProjectStageDTO.Where(u => u.Name == entity.Name).Count() > 0)
                {
                    errors = "B002";
                    message = "项目阶段已经存在。";
                }

                if (errors == "B000")
                {
                    data.ProjectStageDTO.InsertOnSubmit(entity);
                    data.SubmitChanges();
                }
            }

            return Json(new { success = (errors == "B000"), errors = errors, message = message }, JsonRequestBehavior.AllowGet);
        }
 partial void UpdateProjectStageDTO(ProjectStageDTO instance);
 partial void DeleteProjectStageDTO(ProjectStageDTO instance);
 partial void InsertProjectStageDTO(ProjectStageDTO instance);