how to download file from server folder ?

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1.00/5 (1 vote)

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C#

protected void LinkButton1_Click(object sender, EventArgs e)
  {
      string url = @"D://Error.txt";
      // Create an instance of WebClient
      WebClient client = new WebClient();
      // Hookup DownloadFileCompleted Event
      client.DownloadFileCompleted += new AsyncCompletedEventHandler(client_DownloadFileCompleted);

      // Start the download and copy the file to c:\temp
      client.DownloadFileAsync(new Uri(url), @"E:\Error.txt");
  }
  void client_DownloadFileCompleted(object sender, AsyncCompletedEventArgs e)
  {
      Response.Write("File downloaded");
  }

Here @"D://Error.txt"; path name from the server system directive...I want to down load a file from server system..but i am not getting any result from this code...please help me?

Posted 27-Feb-14 18:56pm

Siva Hyderabad

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Comments

george4986 28-Feb-14 1:35am

what is ur requirement ?
are u accessing server through lan or internet?

Siva Hyderabad 28-Feb-14 2:10am

internet..when client to download the docx file

george4986 28-Feb-14 2:16am

public static string[] DirectoryListing(string FTPDirectory, bool Detailed, string UserName, string Password)
{
try
{

FtpWebRequest FTP = (FtpWebRequest)FtpWebRequest.Create(FTPDirectory);
FTP.Credentials = new NetworkCredential(UserName, Password);
FTP.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
if (!Detailed)
FTP.Method = WebRequestMethods.Ftp.ListDirectory;

WebResponse Response = FTP.GetResponse();
StreamReader Reader = new StreamReader(Response.GetResponseStream());

StringBuilder Result = new StringBuilder();
string Line = Reader.ReadLine();
while (Line != null)
{
Result.Append(Line);
Result.Append("\n");
Line = Reader.ReadLine();
}

Result.Remove(Result.ToString().LastIndexOf("\n"), 1);
Reader.Close();
Response.Close();
return Result.ToString().Split('\n');
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}

public static long FileSize(string FTPFullFileName, string UserName, string Password)
{
try
{

FtpWebRequest FTP = (FtpWebRequest)FtpWebRequest.Create(FTPFullFileName);
FTP.Method = WebRequestMethods.Ftp.GetFileSize;
FTP.UseBinary = true;
FTP.Credentials = new NetworkCredential(UserName, Password);
FtpWebResponse Response = (FtpWebResponse)FTP.GetResponse();
Stream FtpStream = Response.GetResponseStream();
long FileSize = Response.ContentLength;

FtpStream.Close();
Response.Close();
return FileSize;
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}

public static void Rename(string FTPFullFileName, string NewFileName, string UserName, string Password)
{
try
{

FtpWebRequest FTP = (FtpWebRequest)FtpWebRequest.Create(FTPFullFileName);
FTP.Method = WebRequestMethods.Ftp.Rename;
FTP.RenameTo = NewFileName;
FTP.UseBinary = true;
FTP.Credentials = new NetworkCredential(UserName, Password);
FtpWebResponse Response = (FtpWebResponse)FTP.GetResponse();
Stream FtpStream = Response.GetResponseStream();
FtpStream.Close();
Response.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}

public static void MakeDirectory(string FTPDirectory, string UserName, string Password)
{
try
{
FtpWebRequest FTP = (FtpWebRequest)FtpWebRequest.Create(FTPDirectory);
FTP.Method = WebRequestMethods.Ftp.MakeDirectory;
FTP.UseBinary = true;
FTP.Credentials = new NetworkCredential(UserName, Password);
FtpWebResponse Response = (FtpWebResponse)FTP.GetResponse();
Stream FtpStream = Response.GetResponseStream();

FtpStream.Close();
Response.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}

george4986 28-Feb-14 2:15am

select functions necessary

public static void Upload(string FullFileName, string FTPFullFileName, string UserName, string Password)
{
try
{
FileInfo File = new FileInfo(FullFileName);
FtpWebRequest FTP = (FtpWebRequest)FtpWebRequest.Create(FTPFullFileName);
FTP.Credentials = new NetworkCredential(UserName, Password);
FTP.KeepAlive = false;
FTP.Method = WebRequestMethods.Ftp.UploadFile;
FTP.UseBinary = true;
FTP.ContentLength = File.Length;
FTP.UsePassive = false;

int BuffLength = 2048;
byte[] Buffer = new byte[BuffLength];
int contentLen;

FileStream fs = File.OpenRead();

Stream strm = FTP.GetRequestStream();

contentLen = fs.Read(Buffer, 0, BuffLength);

while (contentLen != 0)
{
strm.Write(Buffer, 0, contentLen);
contentLen = fs.Read(Buffer, 0, BuffLength);
}

strm.Close();
fs.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
}

public static void Download(string FTPFullFileName, string DestFullFileName, string UserName, string Password)
{
try
{

DestFullFileName = DestFullFileName.Replace("/", "\\");
int indexPart = DestFullFileName.LastIndexOf("\\");

if (indexPart != -1)
{
String DestFolder = DestFullFileName.Substring(0, indexPart + 1);

if (!Directory.Exists(DestFolder))
Directory.CreateDirectory(DestFolder);
}

FtpWebRequest FTP = (FtpWebRequest)FtpWebRequest.Create(FTPFullFileName);
FTP.Method = WebRequestMethods.Ftp.DownloadFile;
FTP.UseBinary = true;

FTP.Proxy = null;
//FTP.KeepAlive = false;
//FTP.UsePassive = false;

FTP.Credentials = new NetworkCredential(UserName, Password);

FtpWebResponse Response = (FtpWebResponse)FTP.GetResponse();
Stream FtpStream = Response.GetResponseStream();
int BufferSize =Convert.ToInt32(FileSize(FTPFullFileName, UserName, Password)) ;
//int BufferSize = 2048;
byte[] Buffer = new byte[BufferSize];

FileStream OutputStream = new FileStream(DestFullFileName, FileMode.Create);
int ReadCount = FtpStream.Read(Buffer, 0, BufferSize);
while (ReadCount > 0)
{
OutputStream.Write(Buffer, 0, ReadCount);
ReadCount = FtpStream.Read(Buffer, 0, BufferSize);
}

FtpStream.Close();
OutputStream.Close();
Response.Close();
}
catch (Exception ex)
{
// throw new Exception(ex.Message);
}

}

Siva Hyderabad 28-Feb-14 2:19am

thanx bro...i will check now..

george4986 28-Feb-14 2:26am

above functions will create,download,list files and get file size from an ftp.use only what u needed.u can do an alternate method by accessing files like the link below if needed
http://stackoverflow.com/questions/275781/server-mappath-server-mappath-server-mappath-server-mappath.

Siva Hyderabad 28-Feb-14 2:47am

FtpWebRequest FTP = (FtpWebRequest)FtpWebRequest.Create(FTPFullFileName);
i am geting exception this line

Siva Hyderabad 28-Feb-14 2:48am

unable cast to file webrequest to ftpwebrequest

george4986 28-Feb-14 3:09am

what is the value of 'FTPFullFileName'?

Siva Hyderabad 28-Feb-14 4:09am

@"D:\Error.txt"

george4986 28-Feb-14 4:37am

refer following link to get exact path of server
http://stackoverflow.com/questions/275781/server-mappath-server-mappath-server-mappath-server-mappath.

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Sergey Alexandrovich Kryukov · Answer 1 · 2014-02-27T19:23:00

Solution 1

Where is downloading? You are trying to copy one local file to another. No need to use the WebClient for that, just copy the file. :-)

—SA

Posted 27-Feb-14 19:23pm

Sergey Alexandrovich Kryukov