عدم دریافت کامل فایل یا ایراد در فایل دریافت شده با ftp

[رامین مرادی]

سلام دوستان وقت بخیر.
من برای اتصال و دانلود فایل از ftp از کلاس زیر استفاده میکنم.


public class FTPClient
{
// The hostname or IP address of the FTP server
private string _remoteHost;


// The remote username
private string _remoteUser;


// Password for the remote user
private string _remotePass;


public FTPClient(string remoteHost, string remoteUser, string remotePassword, bool debug)
{
_remoteHost = remoteHost;
_remoteUser = remoteUser;
_remotePass = remotePassword;
}


/// <summary>
/// Get a list of files and folders on the FTP server
/// </summary>
/// <returns></returns>
public List<string> DirectoryListing()
{
return DirectoryListing(string.Empty);
}


/// <summary>
/// List files and folders in a given folder on the server
/// </summary>
/// <param name="folder"></param>
/// <returns></returns>
public List<string> DirectoryListing(string folder)
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(_remoteHost + folder);
request.Method = WebRequestMethods.Ftp.ListDirectory;
request.Credentials = new NetworkCredential(_remoteUser, _remotePass);
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);


List<string> result = new List<string>();


while (!reader.EndOfStream)
{
result.Add(reader.ReadLine());
}


reader.Close();
response.Close();
return result;
}


/// <summary>
/// Download a file from the FTP server to the destination
/// </summary>
/// <param name="filename">filename and path to the file, e.g. public_html/test.zip</param>
/// <param name="destination">The location to save the file, e.g. c:test.zip</param>
public void Download(string filename, string destination)
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(_remoteHost + filename);
request.Method = WebRequestMethods.Ftp.DownloadFile;
request.Credentials = new NetworkCredential(_remoteUser, _remotePass);
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
StreamReader reader = new StreamReader(responseStream);


StreamWriter writer = new StreamWriter(destination);
writer.Write(reader.ReadToEnd());


writer.Close();
reader.Close();
response.Close();
}
public string ReadFile(string filename)
{
WebClient request = new WebClient();
string url = _remoteHost + "/" + filename;
request.Credentials = new NetworkCredential(_remoteUser, _remotePass);


byte[] newFileData = request.DownloadData(url);
string fileString = System.Text.Encoding.UTF8.GetString(newFileData);
return (fileString);
}
/// <summary>
/// Remove a file from the server.
/// </summary>
/// <param name="filename">filename and path to the file, e.g. public_html/test.zip</param>
public void DeleteFileFromServer(string filename)
{
FtpWebRequest request = (FtpWebRequest)WebRequest.Create(_remoteHost + filename);
request.Method = WebRequestMethods.Ftp.DeleteFile;
request.Credentials = new NetworkCredential(_remoteUser, _remotePass);
FtpWebResponse response = (FtpWebResponse)request.GetResponse();
response.Close();
}


/// <summary>
/// Upload a file to the server
/// </summary>
/// <param name="source">Full path to the source file e.g. c:test.zip</param>
/// <param name="destination">destination folder and filename e.g. public_html/test.zip</param>
public void UploadFile(string source, string destination)
{
string filename = Path.GetFileName(source);


FtpWebRequest request = (FtpWebRequest)WebRequest.Create(_remoteHost + destination);
request.Method = WebRequestMethods.Ftp.UploadFile;
request.Credentials = new NetworkCredential(_remoteUser, _remotePass);


StreamReader sourceStream = new StreamReader(source);
byte[] fileContents = Encoding.UTF8.GetBytes(sourceStream.ReadToEnd());


request.ContentLength = fileContents.Length;


Stream requestStream = request.GetRequestStream();
requestStream.Write(fileContents, 0, fileContents.Length);


FtpWebResponse response = (FtpWebResponse)request.GetResponse();


response.Close();
requestStream.Close();
sourceStream.Close();
}
}



وبا کد زیر فایل رو دانلود میکنم:



FTPClient client = new FTPClient("ftp://000.000.000.000", "11578", "11578", true);
client.Download(max+".zip", "C:\\test\\Update\" + max + ".zip");




اما بعد از دانلود نمیتونم فایل رو باز کنم. خطا میده .انگار فایل کامل دانلود نمیشه . هر نوع فایلی رو هم تست کردم اما باز فایل باز نمیشه. برای مثال فایل زیپ رو که انتقال میدم موقع باز کزدن این خطا رو میده: Unexected end of archive

[the king]

سلام دوستان وقت بخیر.
من برای اتصال و دانلود فایل از ftp از کلاس زیر استفاده میکنم.

اما بعد از دانلود نمیتونم فایل رو باز کنم. خطا میده .انگار فایل کامل دانلود نمیشه . هر نوع فایلی رو هم تست کردم اما باز فایل باز نمیشه. برای مثال فایل زیپ رو که انتقال میدم موقع باز کزدن این خطا رو میده: Unexected end of archive

داده باینری رو با StreamReader و StreamWriter نخونید و ننویسید، مناسب متن هستند. تبدیل داده باینری به رشته خرابش می کنه.


// The hostname or IP address of the FTP server
private string _remoteHost;

// The remote username
private string _remoteUser;

// Password for the remote user
private string _remotePass;

/// <summary>
/// Download a file from the FTP server to the destination
/// </summary>
/// <param name="filename">filename and path to the file, e.g. public_html/test.zip</param>
/// <param name="destination">The location to save the file, e.g. c:test.zip</param>
public void Download(string filename, string destination)
{
var request = (FtpWebRequest)WebRequest.Create(_remoteHost + filename);
request.Method = WebRequestMethods.Ftp.DownloadFile;
request.Credentials = new NetworkCredential(_remoteUser, _remotePass);
using (var response = (FtpWebResponse)request.GetResponse())
{
var buffer = new byte[8192];
using (var responseStream = response.GetResponseStream())
{
using (var writer = File.OpenWrite(destination))
{
int length;
while ((length = responseStream.Read(buffer, 0, buffer.Length)) > 0)
{
writer.Write(buffer, 0, length);
}
}
}
}
}

private void button1_Click(object sender, EventArgs e)
{
_remoteHost = "ftp://test.rebex.net/pub/example/";
_remoteUser = "demo";
_remotePass = "password";
Download("imap-console-client.png", "imap-console-client.png");
}

[رامین مرادی]

مهندس جان قربون دستت کارمو را انداختی فدات:قلب::تشویق: