I am trying to create a program that will recursively delete all files and folder from a given FTP path. My program is working well, if there are only a few files or directories in a given path. For some reason though, if there are several files in a directory, it just hangs on the ReadLine() line and eventually gets an IO error. Here is my code:
class Program
{
private const string FtpSite = "myftpsite.com";
private const string FtpUserName = "myusername";
private const string FtpPassword = "mypassword";
static void Main(string[] args)
{
DeleteFilesAndFolders("/");
}
private static void DeleteFilesAndFolders(string path)
{
if (path != null && (path.StartsWith(#"\\") || path.StartsWith("//")))
path = path.Remove(0, 1);
List<FileObject> files = DirectoryListing(path);
foreach (FileObject file in files.Where(file => !file.IsDirectory))
{
DeleteFile(path, file.FileName);
}
foreach (FileObject file in files.Where(file => file.IsDirectory))
{
DeleteFilesAndFolders(path + "/" + file.FileName);
DeleteFolder(path + "/" + file.FileName);
}
}
private static void DeleteFile(string path, string file)
{
var clsRequest = (FtpWebRequest)WebRequest.Create("ftp://" + FtpSite + path + "/" + file);
clsRequest.Credentials = new NetworkCredential(FtpUserName, FtpPassword);
clsRequest.Method = WebRequestMethods.Ftp.DeleteFile;
using (var response = (FtpWebResponse) clsRequest.GetResponse())
{
using (Stream datastream = response.GetResponseStream())
{
if (datastream == null)
return;
using (var sr = new StreamReader(datastream))
{
sr.ReadToEnd();
sr.Close();
}
datastream.Close();
response.Close();
}
}
}
private static void DeleteFolder(string path)
{
var clsRequest = (FtpWebRequest)WebRequest.Create("ftp://" + FtpSite + path);
clsRequest.Credentials = new NetworkCredential(FtpUserName, FtpPassword);
clsRequest.Method = WebRequestMethods.Ftp.RemoveDirectory;
using (var response = (FtpWebResponse)clsRequest.GetResponse())
{
using (Stream datastream = response.GetResponseStream())
{
if (datastream == null)
return;
using (var sr = new StreamReader(datastream))
{
sr.ReadToEnd();
sr.Close();
}
datastream.Close();
response.Close();
}
}
}
private static List<FileObject> DirectoryListing(string path)
{
var regex = new Regex(#"^([d-])([rwxt-]{3}){3}\s+\d{1,}\s+.*?(\d{1,})\s+(\w+\s+\d{1,2}\s+(?:\d{4})?)(\d{1,2}:\d{2})?\s+(.+?)\s?$",
RegexOptions.Compiled | RegexOptions.Multiline | RegexOptions.IgnoreCase | RegexOptions.IgnorePatternWhitespace);
var request = (FtpWebRequest)WebRequest.Create("ftp://" + FtpSite + path);
request.Credentials = new NetworkCredential(FtpUserName, FtpPassword);
request.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
var result = new List<FileObject>();
using (var response = (FtpWebResponse) request.GetResponse())
{
using (Stream responseStream = response.GetResponseStream())
{
if (responseStream == null)
return null;
using (var reader = new StreamReader(responseStream))
{
while (!reader.EndOfStream)
{
string r = reader.ReadLine();
if (string.IsNullOrWhiteSpace(r))
continue;
var reg = regex.Match(r);
var c = new FileObject
{
FileName = reg.Groups[6].Value,
IsDirectory = reg.Groups[1].Value.ToLower() == "d"
};
result.Add(c);
}
reader.Close();
}
response.Close();
}
}
return result;
}
}
And this is my simple container FileObject class:
internal class FileObject
{
public bool IsDirectory { get; set; }
public string FileName { get; set; }
}
My issue appeared to be fixed by using Active mode instead of Passive. I added this to my code:
request.UsePassive = false;
This appears to fix my issue. I tested it on a large batch of files with lots of subdirectories and sub-subdirectories and it seems to work flawless now.
Related
Can anyone please provide a CALDAV example for C#? Thanks in advance. I am struggling to find an example except this one.
https://ovaismehboob.wordpress.com/2014/03/30/sync-calendar-events-using-caldav/
But id does not work for me.
I get the following Error.
{"The remote server returned an error: (400) Bad Request."}
Here is the code,
public class Caldevx
{
static System.IO.Stream ResponseStream;
static System.Xml.XmlDocument XmlDocument;
static string calendarURI = "https://caldav.calendar.yahoo.com/dav/";
static string username = "thanujastech#yahoo.com";
static string password = "******";
static string content = "<?xml version=\"1.0\" encoding=\"utf-8\"?><propfind xlmns\"DAV:\"><allprop/></propfind>";
public void GetCalendars(){
WebHeaderCollection whc = new WebHeaderCollection();
whc.Add(#"Translate", "F");
ResponseStream = ExectueMethod(username, password, calendarURI,"PROPFIND", whc, content, "text/xml");
XmlDocument = new XmlDocument();
XmlDocument.Load(ResponseStream);
string xmlInner = XmlDocument.InnerXml;
XmlDocument innerXmlDocument = new XmlDocument();
innerXmlDocument.LoadXml(xmlInner);
XmlNodeList lst = innerXmlDocument.GetElementsByTagName("DAV:href");
List<string> lstICSs = new List<string>();
foreach(XmlNode node in lst){
if(node.InnerText.EndsWith(".ics"))
{
lstICSs.Add(node.InnerText.Trim());
}
ResponseStream.Close();
if (lstICSs.Count > 0)
{
DownloadICS("https//caldav.calendar.yahoo.com", lstICSs);
}
}
}
private void DownloadICS(string pathUri, List<string> fileNames)
{
WebClient request = new WebClient();
request.Credentials = new NetworkCredential(username, password);
foreach (var file in fileNames)
{
Byte[] data = request.DownloadData(pathUri + file);
var str = System.Text.Encoding.Default.GetString(data);
string path = #"C:\" + file.Substring(file.LastIndexOf("/")+1);
FileStream fs = new FileStream(path, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite);
fs.Write(data, 0, data.Length);
fs.Close();
DDay.iCal.IICalendarCollection calendars = iCalendar.LoadFromFile(path);
foreach (var item in calendars)
{
foreach (Event e in item.Events)
{
Console.WriteLine(e.Description);
}
}
}
}
private Stream ExectueMethod(string username, string password, string caldevURI, string methodName, WebHeaderCollection headers, string content, string contentType)
{
HttpWebRequest httpGetRequest = (HttpWebRequest)WebRequest.Create(caldevURI);
httpGetRequest.Credentials = new NetworkCredential(username, password);
httpGetRequest.PreAuthenticate = true;
httpGetRequest.Method = methodName;
if (headers != null && headers.HasKeys())
{
httpGetRequest.Headers = headers;
}
byte[] optionsArray = Encoding.UTF8.GetBytes(content);
httpGetRequest.ContentLength = optionsArray.Length;
if (!string.IsNullOrWhiteSpace(contentType))
{
httpGetRequest.ContentType = contentType;
}
Stream requestStream = httpGetRequest.GetRequestStream();
requestStream.Write(optionsArray, 0, optionsArray.Length);
requestStream.Close();
HttpWebResponse httpGetResponse = (HttpWebResponse)httpGetRequest.GetResponse();
Stream responseStream = httpGetResponse.GetResponseStream();
return ResponseStream;
}
}
Failed to get response for large file HTTP put create file using c#
I am using file watcher service service monitor, when user created file or folder we are uploading to cloud
if file size more than 512 MB it is taking too much time to get the response
here I am confusing here the issue with my code or server
and reason for this error
if any changes on my code suggest me.
{
var fileFolderObj1 = new FileFolder();
var postURL = apiBaseUri + "/filefolder/create/file/user/" + userId; // +"?type=file";
code = HttpStatusCode.OK;
HttpWebResponse response = null;
FileInfo f = new FileInfo(filePath);
long filesizeF = f.Length;
try
{
string selectedFile = null;
selectedFile = filePath;
var fi = System.IO.Path.GetFileName(filePath);
////commented for some reason
var postParameters = new Dictionary<string, object>();
postParameters.Add("file", new FileParameter(filePath, ""));
postParameters.Add("parentId", parentId);
postParameters.Add("newName", fi);
postParameters.Add("cloudId", cloudId);
postParameters.Add("isSecure", isSecure);
//postParameters.Add("fileSize", fi.Length);
postParameters.Add("fileSize", filesizeF);
var userAgent = "Desktop";
var formDataBoundary = "----WebKitFormBoundary" + DateTime.Now.Ticks.ToString("x");
var uri = new Uri(postURL);
var createFileRequest = WebRequest.Create(uri) as HttpWebRequest;
this.SetBasicAuthHeader(createFileRequest, userId, password);
createFileRequest.ContentType = "multipart/form-data";
createFileRequest.Method = "PUT";
createFileRequest.Timeout = System.Threading.Timeout.Infinite;
createFileRequest.KeepAlive = false;/*true;*/
createFileRequest.UserAgent = userAgent;
createFileRequest.CookieContainer = new CookieContainer();
try
{
using (var requestStream = createFileRequest.GetRequestStream())
{
}
using (response = (HttpWebResponse)createFileRequest.GetResponse())
{
StreamReader(response.GetResponseStream()).ReadToEnd();
fileFolderObj1 = JsonConvert.DeserializeObject<FileFolder>(reslut);
}
}
catch (Exception exc)
{
if (response != null)
{
code = response.StatusCode;
}
}
}
catch (Exception exc)
{
}
}
}
private static readonly Encoding encoding = Encoding.UTF8;
private void WriteMultipartFormData(Dictionary<string, object> postParameters, string boundary, Stream requestStream, ILogService logService = null)
{
var needsCLRF = false;
foreach (var param in postParameters)
{
// Skip it on the first parameter, add it to subsequent parameters.
if (needsCLRF)
{
requestStream.Write(encoding.GetBytes("\r\n"), 0, encoding.GetByteCount("\r\n"));
}
needsCLRF = true;
if (param.Value is FileParameter)
{
var fileToUpload = (FileParameter)param.Value;
// Add just the first part of this param, since we will write the file data directly to the Stream
var header = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"; filename=\"{2}\"\r\nContent-Type: {3}\r\n\r\n",
boundary,
param.Key,
fileToUpload.FileName ?? param.Key,
fileToUpload.ContentType ?? "application/octet-stream");
requestStream.Write(encoding.GetBytes(header), 0, encoding.GetByteCount(header));
// Write the file data directly to the Stream, rather than serializing it to a string.
FileStream fileStream = new FileStream(fileToUpload.FileName, FileMode.Open, FileAccess.Read);
byte[] buffer = new byte[4096];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0,buffer.Length)) != 0)
{
requestStream.Write(buffer, 0, bytesRead);
logService.Debug("WRITEMULTIPART FORM DATA Bufferlent Running :{0}", bytesRead);
}
fileStream.Close();
}
else
{
var postData = string.Format("--{0}\r\nContent-Disposition: form-data; name=\"{1}\"\r\n\r\n{2}",
boundary,
param.Key,
param.Value);
requestStream.Write(encoding.GetBytes(postData), 0, encoding.GetByteCount(postData));
}
}
// Add the end of the request. Start with a newline
var footer = "\r\n--" + boundary + "--\r\n";
requestStream.Write(encoding.GetBytes(footer), 0, encoding.GetByteCount(footer));
}
}
I'm trying to use the new Toggl API (v8) with .NET C#. I've based my code on the example from litemedia (http://litemedia.info/connect-to-toggl-api-with-net), but it was originally created for version 1 of the API.
private const string TogglTasksUrl = "https://www.toggl.com/api/v8/tasks.json";
private const string TogglAuthUrl = "https://www.toggl.com/api/v8/me"; //sessions.json";
private const string AuthenticationType = "Basic";
private const string ApiToken = "user token goes here";
private const string Password = "api_token";
public static void Main(string[] args)
{
CookieContainer container = new CookieContainer();
var authRequest = (HttpWebRequest)HttpWebRequest.Create(TogglAuthUrl);
authRequest.Credentials = CredentialCache.DefaultCredentials;
authRequest.Method = "POST";
authRequest.ContentType = "application/x-www-form-urlencoded";
authRequest.CookieContainer = container;
string value = ApiToken; //= Convert.ToBase64String(Encoding.Unicode.GetBytes(ApiToken));
value = string.Format("{1}:{0}", Password, value);
//value = Convert.ToBase64String(Encoding.Unicode.GetBytes(value));
authRequest.ContentLength = value.Length;
using (StreamWriter writer = new StreamWriter(authRequest.GetRequestStream(), Encoding.ASCII))
{
writer.Write(value);
}
try
{
var authResponse = (HttpWebResponse)authRequest.GetResponse();
using (var reader = new StreamReader(authResponse.GetResponseStream(), Encoding.UTF8))
{
string content = reader.ReadToEnd();
}
HttpWebRequest tasksRequest = (HttpWebRequest)HttpWebRequest.Create(TogglTasksUrl);
tasksRequest.CookieContainer = container;
//var jsonResult = string.Empty;
var tasksResponse = (HttpWebResponse)tasksRequest.GetResponse();
MemoryStream ms = new MemoryStream();
tasksResponse.GetResponseStream().CopyTo(ms);
//using (var reader = new StreamReader(tasksResponse.GetResponseStream(), Encoding.UTF8))
//{
// jsonResult = reader.ReadToEnd();
//}
ms.Seek(0, SeekOrigin.Begin);
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(Task));
var tasks = ser.ReadObject(ms) as List<Task>;
ms.Close();
//var tasks = DataContractJsonConvert.DeserializeObject<Task[]>(jsonResult);
foreach (var task in tasks)
{
Console.WriteLine(
"{0} - {1}: {2} starting {3:yyyy-MM-dd HH:mm}",
task.Project.Name,
task.Description,
TimeSpan.FromSeconds(task.Duration),
task.Start);
}
}
catch (System.Exception ex)
{
throw;
}
}
The following line is returning a 404 error.
var authResponse = (HttpWebResponse)authRequest.GetResponse();
Here is code that works. Since I was looking for this answer recently there might still be others as lost as me.
Notes: I used Encoding.Default.GetBytes() because Encoding.Unicode.GetBytes() did not give me a correct result on my .NET string. I hope it doesn't depend on the default setup of Visual Studio.
The content-type is "application/json".
Sorry, I haven't tried a POST version yet.
string ApiToken = "user token goes here";
string url = "https://www.toggl.com/api/v8/me";
string userpass = ApiToken + ":api_token";
string userpassB64 = Convert.ToBase64String(Encoding.Default.GetBytes(userpass.Trim()));
string authHeader = "Basic " + userpassB64;
HttpWebRequest authRequest = (HttpWebRequest)WebRequest.Create(url);
authRequest.Headers.Add("Authorization", authHeader);
authRequest.Method = "GET";
authRequest.ContentType = "application/json";
//authRequest.Credentials = CredentialCache.DefaultNetworkCredentials;
try
{
var response = (HttpWebResponse)authRequest.GetResponse();
string result = null;
using (Stream stream = response.GetResponseStream())
{
StreamReader sr = new StreamReader(stream);
result = sr.ReadToEnd();
sr.Close();
}
if (null != result)
{
System.Diagnostics.Debug.WriteLine(result.ToString());
}
// Get the headers
object headers = response.Headers;
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine(e.Message + "\n" + e.ToString());
}
I have created a function that find files on a FTP folder.
public static List<string> GetFileList(NetworkCredential credential, string FTPSite, string FTPFolder, string extension)
{
string LSOutput = "";
List<string> files = new List<string>();
//Fetch LS
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(#"ftp://" + FTPSite + FTPFolder);
request.Credentials = credential;
request.UseBinary = true;
request.EnableSsl = true;
request.Method = WebRequestMethods.Ftp.ListDirectory;
FtpWebResponse response = null;
response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
LSOutput = reader.ReadToEnd();
reader.Close();
response.Close();
PrepareLog("LS output while finding files:");
PrepareLog(LSOutput);
//Parse the LS
string[] LSOutputLines = LSOutput.Trim().Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
foreach (string LSOutputLine in LSOutputLines)
files.Add(LSOutputLine);
//Filter files
files = files.Where(f => f.ToLower().EndsWith(extension.ToLower())).ToList();
PrepareLogAndEmail("Total " + extension.ToLower() + " files found: " + files.Count, LogMessageType.Simple);
return files;
}
Exception handling is done at the place where the function is being called.
Now the problem is that sometimes the FTP faces some issues(like timeout) and then we have to rerun the program.
I have been asked to add 3 times retry mechanism and here is what I did to retry it once.
public static List<string> GetFileList(NetworkCredential credential, string FTPSite, string FTPFolder, string extension)
{
string LSOutput = "";
List<string> files = new List<string>();
try
{
//Fetch LS
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(#"ftp://" + FTPSite + FTPFolder);
request.Credentials = credential;
request.UseBinary = true;
request.EnableSsl = true;
request.Method = WebRequestMethods.Ftp.ListDirectory;
FtpWebResponse response = null;
response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
LSOutput = reader.ReadToEnd();
reader.Close();
response.Close();
PrepareLog("LS output while finding files:");
PrepareLog(LSOutput);
}
catch (Exception ex)
{
PrepareLogAndEmail("First attempt failed: Details: " + ex.Message, LogMessageType.AttemptFailed);
PrepareLogAndEmail("Second attempt started" + ex.Message, LogMessageType.Simple);
//Fetch LS
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(#"ftp://" + FTPSite + FTPFolder);
request.Credentials = credential;
request.UseBinary = true;
request.EnableSsl = true;
request.Method = WebRequestMethods.Ftp.ListDirectory;
FtpWebResponse response = null;
response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
LSOutput = reader.ReadToEnd();
reader.Close();
response.Close();
PrepareLog("LS output while finding files(second attempt):");
PrepareLog(LSOutput);
}
//Parse the LS
string[] LSOutputLines = LSOutput.Trim().Split(new string[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries);
foreach (string LSOutputLine in LSOutputLines)
files.Add(LSOutputLine);
//Filter files
files = files.Where(f => f.ToLower().EndsWith(extension.ToLower())).ToList();
PrepareLogAndEmail("Total " + extension.ToLower() + " files found: " + files.Count, LogMessageType.Simple);
return files;
}
Now if I have to add 2 more tries, will I need to do this sort of daiys chaining or is there any other cleaner option available ?
I would go with a retry loop, something like below
You will notice that I make use of a bolean to flag out of a successfull download, or the retries count to terminate.
I would even go as far as changing the last section to check if the download was successfull, and notify the user if it was not, Maybe even logging the error messages.
public static List<string> GetFileList(NetworkCredential credential, string FTPSite, string FTPFolder, string extension)
{
List<string> files = new List<string>();
int retries = 0;
int maxRetries = 5;
bool downloaded = false;
string LSOutput = "";
while (!downloaded && retries < maxRetries)
{
try
{
LSOutput = "";
//Fetch LS
FtpWebRequest request = (FtpWebRequest) WebRequest.Create(#"ftp://" + FTPSite + FTPFolder);
request.Credentials = credential;
request.UseBinary = true;
request.EnableSsl = true;
request.Method = WebRequestMethods.Ftp.ListDirectory;
FtpWebResponse response = null;
response = (FtpWebResponse) request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);
LSOutput = reader.ReadToEnd();
reader.Close();
response.Close();
PrepareLog("LS output while finding files:");
PrepareLog(LSOutput);
downloaded = true;
}
catch (Exception ex)
{
retries++;
}
}
if (downloaded)
{
//Parse the LS
string[] LSOutputLines = LSOutput.Trim().Split(new string[] {Environment.NewLine}, StringSplitOptions.RemoveEmptyEntries);
foreach (string LSOutputLine in LSOutputLines)
files.Add(LSOutputLine);
//Filter files
files = files.Where(f => f.ToLower().EndsWith(extension.ToLower())).ToList();
PrepareLogAndEmail("Total " + extension.ToLower() + " files found: " + files.Count, LogMessageType.Simple);
return files;
}
else
{
PrepareLogAndEmail("Failed to download file", LogMessageType.Simple);
return null;
}
}
Hi and thanks for looking!
Background
I need to pull the file locations (path and filename) for all files at a given FTP address.
For files on a mapped network or local drive, this code would work:
foreach(string fileName f in Directory.GetFiles("C\\:SomeDirectory"), "*.*",
SearchOption.AllDirectories)
{
//do stuff with each file found
}
But this will NOT work over an FTP connection. I have already found this MS documentation which covers the establishing of an FTPWebRequest, but it does not show me how to loop through each file found (in all nested directories as well).
I am using C# within a forms app.
Question
How do I accomplish this:
foreach(string fileName f in Directory.GetFiles("C\\:SomeDirectory"), "*.*",
SearchOption.AllDirectories)
{
//do stuff with each file found
}
With an FTP connection?
Many thanks!!
UPDATE / Final Answer
Special thanks to #sunk for getting this going. I made a minor tweek to his code that makes it fully recursive so that it can drill into nested folders. Here is the final code:
//A list that holds all file locations in all folders of a given FTP address:
List<string> fnl= new List<string>();
//A string to hold the base FTP address:
string ftpBase = "ftp://[SOME FTP ADDRESS]";
//A button-click event. Can be a stand alone method as well
private void GetFileLocations(object sender, EventArgs e)
{
//Get the file names from the FTP location:
DownloadFileNames(ftpBase);
//Once 'DownloadFileNames' has run, we have populated 'fnl'
foreach(var f in fnl)
{
//do stuff
}
}
//Gets all files in a given FTP address. RECURSIVE METHOD:
public void DownloadFileNames(string ftpAddress)
{
string uri = ftpAddress;
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri);
reqFTP.Credentials = new NetworkCredential("pella", "PellaWA01!");
reqFTP.EnableSsl = false;
reqFTP.KeepAlive = false;
reqFTP.UseBinary = true;
reqFTP.UsePassive = true;
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream responseStream = response.GetResponseStream();
List<string> files = new List<string>();
StreamReader reader = new StreamReader(responseStream);
while (!reader.EndOfStream)
files.Add(reader.ReadLine());
reader.Close();
responseStream.Dispose();
//Loop through the resulting file names.
foreach (var fileName in files)
{
var parentDirectory = "";
//If the filename has an extension, then it actually is
//a file and should be added to 'fnl'.
if (fileName.IndexOf(".") > 0)
{
fnl.Add(ftpAddress.Replace("ftp://pella.upload.akamai.com/140607/pella/", "http://media.pella.com/") + fileName);
}
else
{
//If the filename has no extension, then it is just a folder.
//Run this method again as a recursion of the original:
parentDirectory += fileName + "/";
try
{
DownloadFileNames(ftpAddress + parentDirectory);
}
catch (Exception)
{
//throw;
}
}
}
}
First of all, you have to get the files name local on your machine using FTPWebRequest.
WebRequestMethods.Ftp.ListDirectory;
then use foreach {};
Here is the code:-
public List<string> DownloadFileNames()
{
string uri = "ftp://" + ftpServerIP + "/";
FtpWebRequest reqFTP = (FtpWebRequest)FtpWebRequest.Create(uri);
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.EnableSsl = true;
reqFTP.KeepAlive = false;
reqFTP.UseBinary = true;
reqFTP.UsePassive = Settings.UsePassive;
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
ServicePointManager.ServerCertificateValidationCallback = new System.Net.Security.RemoteCertificateValidationCallback(AcceptAllCertifications);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream responseStream = response.GetResponseStream();
List<string> files = new List<string>();
StreamReader reader = new StreamReader(responseStream);
while (!reader.EndOfStream)
files.Add(reader.ReadLine());
reader.Close();
responseStream.Dispose();
return files;
}
Now you have the List:-
List<string> FileNameList = DownloadFileNames();
foreach (var fileName in FileNameList)
{
}
the ListDirectoryDetails command used in the example just returns a string. You will have to manually parse it to build a list of files and subdirectories.
Found at http://social.msdn.microsoft.com/Forums/en/ncl/thread/079fb811-3c55-4959-85c4-677e4b20bea3
string[] files = GetFileList();
foreach (string file in files)
{
Download(file);
}
public string[] GetFileList()
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
WebResponse response = null;
StreamReader reader = null;
try
{
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/"));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
reqFTP.Proxy = null;
reqFTP.KeepAlive = false;
reqFTP.UsePassive = false;
response = reqFTP.GetResponse();
reader = new StreamReader(response.GetResponseStream());
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("\n");
line = reader.ReadLine();
}
// to remove the trailing '\n'
result.Remove(result.ToString().LastIndexOf('\n'), 1);
return result.ToString().Split('\n');
}
catch (Exception ex)
{
if (reader != null)
{
reader.Close();
}
if (response != null)
{
response.Close();
}
downloadFiles = null;
return downloadFiles;
}
}
private void Download(string file)
{
try
{
string uri = "ftp://" + ftpServerIP + "/" + remoteDir + "/" + file;
Uri serverUri = new Uri(uri);
if (serverUri.Scheme != Uri.UriSchemeFtp)
{
return;
}
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + remoteDir + "/" + file));
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.Proxy = null;
reqFTP.UsePassive = false;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream responseStream = response.GetResponseStream();
FileStream writeStream = new FileStream(localDestnDir + "\" + file, FileMode.Create);
int Length = 2048;
Byte[] buffer = new Byte[Length];
int bytesRead = responseStream.Read(buffer, 0, Length);
while (bytesRead > 0)
{
writeStream.Write(buffer, 0, bytesRead);
bytesRead = responseStream.Read(buffer, 0, Length);
}
writeStream.Close();
response.Close();
}
catch (WebException wEx)
{
MessageBox.Show(wEx.Message, "Download Error");
}
catch (Exception ex)
{
MessageBox.Show(ex.Message, "Download Error");
}
}