FTP서버 경로의 하위 경로 포함 전체 파일 리스트 가져오기

getFilesRecursively.cs

    private void getFilesRecursively(string fullpath, string ftpUser, string ftpPw, DataTable dataTable)
    {
        var credentials = new NetworkCredential(ftpUser, ftpPw);
        FtpWebRequest listRequest = (FtpWebRequest)WebRequest.Create(fullpath);
        listRequest.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
        listRequest.Credentials = credentials;
        listRequest.EnableSsl = true;

        List<string> lines = new List<string>();
        
        using (WebResponse listResponse = listRequest.GetResponse())
        using (Stream listStream = listResponse.GetResponseStream())
        using (StreamReader listReader = new StreamReader(listStream))
        {
            while (!listReader.EndOfStream)
            {
                string line = listReader.ReadLine();
                lines.Add(line);
            }
        }
        foreach (string line in lines)
        {
            string[] tokens = line.Split(new[] { ' ' }, 9, StringSplitOptions.RemoveEmptyEntries);
            // 파일명
            string name = tokens[3];
            // 타입(폴더or파일)
            string permissions = tokens[2];
            // 재귀를 위한 경로 재정의  
            string fileUrl = $"{fullpath}{name}";
            // 폴더면 재귀함수 실행          
            if (permissions == "<DIR>")
            {
                getFilesRecursively($"{fileUrl}/", ftpUser, ftpPw, dataTable);
            }
            else
            {
                // 파일생성일자                    
                string creationDate = tokens[0];
                // 파일생성시간
                string creationTime = tokens[1];
                // 일자+시간 타입으로 변경                 
                string dateTimeString = $"{creationDate} {creationTime}";
                DateTime parsedCreationDate = DateTime.ParseExact(dateTimeString, "MM-dd-yy hh:mmtt", CultureInfo.InvariantCulture);
                DataRow row = dataTable.NewRow(); row["FILENAME"] = name;
                row["CREATIONDATE"] = parsedCreationDate;
                row["FULLPATH"] = fileUrl; dataTable.Rows.Add(row);
            }
        }
    }