Practical Approach of Downloading File From FTP Path

fs = new FileStream(path + "\\" + fileName, FileMode.Create);

//Creating FTP request.

FtpWebRequest reqFTP = CreateFTPRequest(fullFtpPath, fileName);

//Setting FTP Credentials.

reqFTP.Credentials = CreateNetworkCredentials(ftpUserID, ftpPassword);

reqFTP.KeepAlive = false;

// What mechanism you need to perform like download,upload etc in the FTP path.

reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;

// Specify the data transfer type.

reqFTP.UseBinary = true;

// Notify the server about the size of the uploaded file

reqFTP.ContentLength = fs.Length;

return reqFTP;

}

Step 5: Writes the FTP response to file stream which creates a file in the specified path.

/// <summary>

/// It takes the stream as bytes from response and writes the bytes to the file stream as File.

/// </summary>

public static void PassFileStreamDataToStream(FtpWebResponse response, FileStream outputStream)

{

try

{

Stream ftpStream = response.GetResponseStream();

int bufferSize = 2048;

int readCount;

byte[] buffer = new byte[bufferSize];

//reads the stream of response based on request.

readCount = ftpStream.Read(buffer, 0, bufferSize);

//Writing Stream to the Path specified in the File stream.

while (readCount > 0)

{

outputStream.Write(buffer, 0, readCount);

readCount = ftpStream.Read(buffer, 0, bufferSize);

}

ftpStream.Close();

outputStream.Close();

response.Close();

}

catch (Exception ex)

{

GetHttpResponse().Write(ex.Message + " Download Error");

}

}

Step 6: Creating the response to write if an error occurs.

/// <summary>

/// Get current response.

/// </summary>

public static HttpResponse GetHttpResponse()

{

return HttpContext.Current.Response;

}