[partizanes]

Подскажите как в данном примере получать brSize = e->BytesReceived; раз в секунду
весь пример попытка получить скорость скачивания;

_WebClient->DownloadFileCompleted += gcnew AsyncCompletedEventHandler(this, &Form1::_DownloadFileCompleted);
_WebClient->DownloadProgressChanged += gcnew System::Net::DownloadProgressChangedEventHandler(this, &Form1::_DownloadProgressChanged);
_WebClient->DownloadFileAsync(gcnew Uri(_URL), _SaveAs);

тут срабатывает постоянно поэтому значение brSize не раз в секунду как нам надо.

void Form1::_DownloadProgressChanged(System::Object ^sender, System::Net::DownloadProgressChangedEventArgs ^e)
{
    brSize = e->BytesReceived;
	brSizeLast = brSize - brSizeLast;
	Int64 tbtrSize = e->TotalBytesToReceive;
	Int64 ProgressPercentage = brSize * 100 / (tbtrSize);

	String^ drawString = Convert::ToString(ProgressPercentage) + "%"+Convert::ToString(diff);
	System::Drawing::Font^ drawFont = gcnew System::Drawing::Font( "Arial",8.25 );
	SolidBrush^ drawBrush = gcnew SolidBrush( Color::Black );
	PointF drawPoint = PointF(324/2 - 10, 23 / 2 - 7);

	progressBar1->Refresh();
	progressBar1->CreateGraphics()->DrawString( drawString, drawFont, drawBrush, drawPoint );
	progressBar1->Value = e->ProgressPercentage;
}

функция на таймере раз в 1сек срабатывает

void Form1::dSpeed(System::Object^  sender, System::EventArgs^  e)
{
	Int64 diff = (brSize-brSizeLast)/1024;
}

p.s переменные обьявлены глобально

Int64 brSizeLast = 0;
INT64 brSize = 0;
Int64 diff = 0;

вся функция откуда что вызывается

void Form1::DownloadFile(System::String ^_URL, System::String ^_SaveAs) 
{
	System::Net::WebClient ^_WebClient = gcnew System::Net::WebClient();

	WebRequest^ myRequest = WebRequest::Create(_URL);

	WebResponse^ myResponse = myRequest->GetResponse();

	Int64 iSize = myResponse->ContentLength;

	myResponse->Close();

	progressBar1->Visible = true;
	exit_button->Enabled = false;
	login_box->Enabled = false;
	password_box->Enabled = false;

	this->Time = (gcnew System::Windows::Forms::Timer(this->components));
	this->Time->Enabled = true;
	this->Time->Interval = 1000;
	this->Time->Tick += gcnew System::EventHandler(this, &Form1::dSpeed);

	_WebClient->DownloadFileCompleted += gcnew AsyncCompletedEventHandler(this, &Form1::_DownloadFileCompleted);
	_WebClient->DownloadProgressChanged += gcnew System::Net::DownloadProgressChangedEventHandler(this, &Form1::_DownloadProgressChanged);
	_WebClient->DownloadFileAsync(gcnew Uri(_URL), _SaveAs);

	while(_WebClient->IsBusy)
	{
		Application::DoEvents();
	}
}