using System;

using System.Globalization;

using System.Linq;

​

namespace ConsoleApp1

{

    public class Program

    {

        public static bool DataRecording(string blobname)

        {

            bool Valid = false;

            var parts = blobname.Split(new char[] { '/' });

            if (parts.Count() < 4)

            {

                return false;

            }

            int si = parts[3].IndexOf('_');

            var time_part = parts[3].Substring(0, si);

            try

            {

                string[] formats = { "yyyyMMddHHmmssfff", "yyyyMMddHHmmss" };

                DateTime UtcTime = DateTime.ParseExact(string.Join(string.Empty, parts[0], parts[1], parts[2], time_part), formats, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.AdjustToUniversal);

                Valid = true;

            }

            catch

            {

                Valid = false;

            }

            return Valid;

        }

​

        public static void Main()

        {

            Console.WriteLine(String.Format("2018/07/02/141257_868122039927895/raw.binpayload valid: {0}", DataRecording("2018/07/02/141257_868122039927895/raw.binpayload")));

            Console.WriteLine(String.Format("2021/05/26/5717548_898/recording.binpayload valid: {0}", DataRecording("2021/05/26/5717548_898/recording.binpayload")));

        }

    }

}