Renci.SshNet.SftpClient.UploadFile C# (CSharp) Method

        public void UploadFile(Stream input, string path, Action<ulong> uploadCallback = null)
        {
            UploadFile(input, path, true, uploadCallback);
        }

 public bool UploadFile(string filePath)
 {
     ConnectionInfo connectionInfo = new PasswordConnectionInfo(_address, ConstFields.SFTP_PORT, _username, _password);
     try
     {
         using (var sftp = new SftpClient(connectionInfo))
         {
             sftp.Connect();
             using (var file = File.OpenRead(filePath))
             {
                 if (!sftp.Exists(ConstFields.TEMP_PRINT_DIRECTORY))
                 {
                     sftp.CreateDirectory(ConstFields.TEMP_PRINT_DIRECTORY);
                 }
                 sftp.ChangeDirectory(ConstFields.TEMP_PRINT_DIRECTORY);
                 string filename = Path.GetFileName(filePath);
                 sftp.UploadFile(file, filename);
             }
             sftp.Disconnect();
         }
     }
     catch (Renci.SshNet.Common.SshConnectionException)
     {
         Console.WriteLine("Cannot connect to the server.");
         return false;
     }
     catch (System.Net.Sockets.SocketException)
     {
         Console.WriteLine("Unable to establish the socket.");
         return false;
     }
     catch (Renci.SshNet.Common.SshAuthenticationException)
     {
         Console.WriteLine("Authentication of SSH session failed.");
         return false;
     }
     return true;
 }