/// <summary>
        /// 设置model,如果不为空就设置,如果为空则和之前一样
        /// </summary>
        /// <param name="target"></param>
        /// <param name="source"></param>
        /// <returns></returns>
        public CaipuModelType SetCaipuModelType(CaipuModelType model, CaipuModelTypeReq data)
        {
            if (!string.IsNullOrEmpty(data.TypeName))
            {
                model.TypeName = data.TypeName;
            }
            if (data.projectid != null)
            {
                model.projectid = data.projectid.Value;
            }
            if (!string.IsNullOrEmpty(data.ProjectName))
            {
                model.ProjectName = data.ProjectName;
            }
            if (data.OptId != null)
            {
                model.OptId = data.OptId.Value;
            }
            if (!string.IsNullOrEmpty(data.OptName))
            {
                model.OptName = data.OptName;
            }
            if (data.createdate != null && data.createdate != DateTime.MinValue && data.createdate != SqlDateTime.MinValue.Value)
            {
                model.createdate = data.createdate.Value;
            }
            if (!string.IsNullOrEmpty(data.ValidState))
            {
                model.ValidState = data.ValidState;
            }

            return(model);
        }
        public CaipuModelType UpdateSingle(int id, CaipuModelTypeReq data)
        {
            CaipuModelType model = db.CaipuModelType.Find(id);

            SetCaipuModelType(model, data);
            db.SaveChanges();
            return(model);
        }