Uploading Files via FTP

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SQL-CE

C#

SQL-Server

forms

FTP

, +

Hi everyone!

This is my first attempt in implementing a procedure to upload files via FTP. Here is what I have so far:

private void ftpOKButton_Click(object sender, EventArgs e)
{
     String sourcefilepath = pathToFileName; 
     String ftpurl = fullFTPHostName;
     String ftpusername = ftpUserNameTextBox.Text.Trim();
     String ftppassword = ftpPasswordTextBox.Text.Trim();

     try
     {
          string filename = Path.GetFileName(sourcefilepath);
          string ftpfullpath = ftpurl;
          FtpWebRequest ftp = (FtpWebRequest)FtpWebRequest.Create(ftpfullpath);
          ftp.Credentials = new NetworkCredential(ftpusername, ftppassword);

          ftp.KeepAlive = true;
          ftp.UseBinary = true;
          ftp.Method = WebRequestMethods.Ftp.UploadFile;

          FileStream fs = File.OpenRead(sourcefilepath);
          byte[] buffer = new byte[fs.Length];
          fs.Read(buffer, 0, buffer.Length);
          fs.Close();

          Stream ftpstream = ftp.GetRequestStream();
          ftpstream.Write(buffer, 0, buffer.Length);
          ftpstream.Close();
     }
     catch (Exception ex)
     {
          MessageBox.Show(ex.Message);
     }
}

My question is how can I resolve the error I'm receiving: It is failing on this line:
Stream ftpstream = ftp.GetRequestStream();
with the error message of:
"The remote server returned an error: (550) File unavailable (e.g. file not found, no access).

I've verified the file is located in the path that I'm trying to access.

Thanks everyone!