Uploading Files to FTP Site using .Net

Using System.Net lets us access, Download, Upload ,Delete, See All files, and variety of other primitive tasks over FTP site. Here is the C# code that lets us upload the files to a specific FTP URL.

private void Upload(string filename)
{

FileInfo fileInf = new FileInfo(filename);

string uri = "ftp://" + ftpServerIP + "/" + fileInf.Name; FtpWebRequest reqFTP;

// Create FtpWebRequest object from the Uri provided

reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri("ftp://" + ftpServerIP + "/" + fileInf.Name)); 

// Provide the WebPermission Credintials

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.

// Specify the data transfer type.
 reqFTP.Method = WebRequestMethods.Ftp.UploadFile;

// Notify the server about the size of the uploaded file
 reqFTP.UseBinary = true;

// The buffer size is set to 2kb
reqFTP.ContentLength = fileInf.Length;  

 

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)

{ MessageBox.Show(ex.Message, "Upload Error");

}

}