public int Upload(String HostName, String UserName, String Password, String remotePath, String localFilePath)
        {
            int result = 0;
            Session session = null;
            try
            {
                // Setup session options
                SessionOptions sessionOptions = new SessionOptions
                {
                    Protocol = Protocol.Ftp,
                    HostName = HostName,
                    UserName = UserName,
                    Password = Password,
                    Timeout = TimeSpan.MaxValue,
                };

                using (session = new Session())
                {
                    // Connect
                    session.Open(sessionOptions);

                   // upload files
                    TransferOptions transferOptions = new TransferOptions();
                    transferOptions.TransferMode = TransferMode.Ascii;

                    TransferOperationResult transferResult = null;

                    transferResult = session.PutFiles(localFilePath, remotePath, false, transferOptions);

                    // Throw on any error
                    transferResult.Check();
                    // Print results
                    foreach (TransferEventArgs transfer in transferResult.Transfers)
                    {
                        Console.WriteLine("Upload of {0} succeeded", transfer.FileName);
                    }

                }

                result = 0;
            }
            catch (Exception e)
            {
                Console.WriteLine("Error: {0}", e);
                result = 1;
            }
            finally
            {
                if (session != null)
                {
                    session.Dispose();
                }
            }
            return result;
        }

at System.TimeSpan.Add(TimeSpan ts)
at System.TimeSpan.op_Addition(TimeSpan t1, TimeSpan t2)
at WinSCP.Session.CheckForTimeout(String additional)
at WinSCP.PatientFileStream.Wait(Int32& interval)
at WinSCP.PatientFileStream.Read(Byte[] array, Int32 offset, Int32 count)
at System.Xml.XmlTextReaderImpl.ReadData()
at System.Xml.XmlTextReaderImpl.ParseText(Int32& startPos, Int32& endPos, Int32& outOrChars)
at System.Xml.XmlTextReaderImpl.ParseText()
at ProjectName.Upload(String HostName, String UName, String Password, String remotePath, String localFilePath)