Generate Date Wise ID for Uploaded FIles

public string GetName(string path, string fileType)
        {
            string[] sourcePath = Directory.GetFiles(path);
            Int64 yearMonth = (DateTime.Now.Year * 10000) + (DateTime.Now.Month * 100) + DateTime.Now.Day;
            string name = yearMonth + "-001";
            int pathNo2 = 0;

            string objt = db.FileCopyFromServers.Where(x => x.YearMonth == yearMonth && x.FileType == fileType).OrderByDescending(x => x.YearMonth).Select(x => x.FileName).FirstOrDefault();
            if (objt != null)
            {
                objt = objt.Substring(objt.Length - 7).Substring(0, 3);
                pathNo2 = Convert.ToInt32(objt) + 1;
                name = CovertName(pathNo2, yearMonth);
            }

            if (sourcePath.Length != 0)
            {
                string[] sptPath = sourcePath[sourcePath.Length - 1].Split('\\');
                int count = sptPath.Length;
                string temp = sptPath[count - 1].Substring(sptPath[count - 1].Length - 16).Substring(0, 12);
                sptPath = temp.Split('-');

                int pathNo1 = 0;
                int extnNumber = 0;

                int pathYearMonth;
                bool success = Int32.TryParse(sptPath[0], out pathYearMonth);
                if (success)
                {
                    if (pathYearMonth == yearMonth || pathNo2 != 0)
                    {
                        if (pathNo2 != 0 && Convert.ToInt32(sptPath[0]) == yearMonth)
                        {
                            pathNo1 = Convert.ToInt32(sptPath[1]) + 1;
                            extnNumber = pathNo1 < pathNo2 ? pathNo2 : pathNo1;
                        }
                        else if (Convert.ToInt32(sptPath[0]) == yearMonth)
                        {
                            extnNumber = Convert.ToInt32(sptPath[1]) + 1;
                        }
                        else if (pathNo2 != 0)
                        {
                            extnNumber = pathNo2;
                        }

                        name = CovertName(extnNumber, yearMonth);

                    }
                }

            }

            return name;
        }


public string CovertName(int extnNumber, Int64 yearMonth)
        {

            if (extnNumber < 10)
            {
                return yearMonth + "-00" + extnNumber;
            }
            else if (extnNumber < 100)
            {
                return yearMonth + "-0" + extnNumber;
            }
            else
            {
                return yearMonth + "-" + extnNumber;
            }

        }