How to upload/download file from FTP Server in Asp.net
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.IO;
using System.Net;
public partial class Default2 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
// Upload file
protected void btnUpload_Click(object sender, EventArgs e)
{
//fileName = Name of the file to be downloaded from FTP server.
string fileName = "test.txt";
//filePath = The full path where the file is to be created. Here i put local system path.
string filePath = "C:\\FTP";
string ftpServerIP = "IP Address";
string ftpUserID = "User ID";
string ftpPassword = "Password";
FtpWebRequest reqFTP;
try
{
FileStream outputStream = new FileStream(filePath + "\\"+ fileName, FileMode.Create);
reqFTP = (FtpWebRequest)FtpWebRequest.Create(newUri("ftp://" + ftpServerIP + "/" + fileName));
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
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)
{
string errMsg = (ex.Message);
}
}
// Download file
protected void btnDownload_Click(object sender, EventArgs e)
{
string filename = "c:\\test.txt";
string ftpServerIP = "IP address";
string ftpUserID = "User ID";
string ftpPassword = "Password";
FileInfo fileInf = new FileInfo(filename);
string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name;
FtpWebRequest reqFTP;
// Create FtpWebRequest object
reqFTP = (FtpWebRequest)FtpWebRequest.Create(newUri("ftp://" + ftpServerIP + "/" + fileInf.Name));
//Provide ftp userid and password
reqFTP.Credentials = new NetworkCredential(ftpUserID, ftpPassword);
// By default KeepAlive is true, where the control connection is not closed
// after a command is executed.
reqFTP.KeepAlive = false;
//Specify the command to be executed. Here we use upload file command
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
//data transfer type we use here is binary
reqFTP.UseBinary = true;
// Notify the server about the size of the uploaded file
reqFTP.ContentLength = fileInf.Length;
// The buffer size is set to 2kb
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
// Opens a file stream (System.IO.FileStream) to read the file to be uploaded
FileStream fs = fileInf.OpenRead();
try
{
// Stream to which the file to be upload is written
Stream strm = reqFTP.GetRequestStream();
// Read from the file stream 2kb at a time
contentLen = fs.Read(buff, 0, buffLength);
// Till Stream content ends
while (contentLen != 0)
{
// Write Content from the file stream to the FTP Upload Stream
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
// Close the file stream and the Request Stream
strm.Close();
fs.Close();
}
catch (Exception ex)
{
string ErrMsg = ex.Message;
}
}
}
