DateTime.TryParse 日期時間字符串驗證

            DateTime applicationDatetime = new DateTime();
            bool applicationDate = DateTime.TryParse("2019-09-18 11:00", out applicationDatetime);

applicationDate = true;

            DateTime applicationDatetime = new DateTime();
            bool applicationDate = DateTime.TryParse("2019-09-18 11", out applicationDatetime);

applicationDate = false;