Application crash wen i used LastTransferSpeed in OnTransferProgress Event

Hi,

I'm trying to create a C# .NET windows application that uses the SmartFTP .NET interop.

This sample works:
using System;

using System.Collections.Generic;

using System.Text;

using System.Windows.Forms;

using System.Threading;



namespace FTPExample

{

	public class FTPLib

	{

		MainForm m_Form;



		sfFTPLib.FTPConnectionMTAClass _ftp;



		private void OnTransferProgress(int nTransferBytesLo, int nTransferBytesHi)

		{

			Int64 nTransferBytes = (uint)nTransferBytesLo;

			nTransferBytes <<= 32;

			nTransferBytes += (uint)nTransferBytesHi;

			m_Form.label1.BeginInvoke(m_Form.m_DelegateShowTransferProgress, new Object[] { nTransferBytes.ToString() });

		}



		public FTPLib(string url, string username, string password, int port, MainForm form)

		{

			m_Form = form;



			sfFTPLib.FTPConnectionMTA _ftp = new sfFTPLib.FTPConnectionMTA();

			

			_ftp.OnTransferProgress += new sfFTPLib.IFTPConnectionEvents_OnTransferProgressEventHandler(OnTransferProgress);



			// Host 

			_ftp.Host = url;

			_ftp.Port = port;

			_ftp.Username = username;

			_ftp.Password = password;

			_ftp.Passive = true;

			_ftp.Timeout = 60000;

			...

When I call the FTP code from within a new thread, the application crash on the line that access to LastTransferSpeed Value.

This sample works not:
		private void OnTransferProgress(int nTransferBytesLo, int nTransferBytesHi)

		{

			Int64 nTransferBytes = (uint)nTransferBytesLo;

			nTransferBytes <<= 32;

			nTransferBytes += (uint)nTransferBytesHi;

			int TransferSpeed = _ftp.LastTransferSpeed; // <---- crash here

			m_Form.label1.BeginInvoke(m_Form.m_DelegateShowTransferProgress, new Object[] { nTransferBytes.ToString() });

		}
Error in Line "System.NullReferenceException"
Any idea what's going on and how to fix this?

Thanks,
Raimund

Update to the latest version of SmartFTP FTP Library and try again.

Regards,
SmartFTP


Update to the latest version of SmartFTP FTP Library and try again.

Regards,
SmartFTP

Works fine. Thank you

Regards,
Raimund