CHttpFile (c# equivalent)

[flynn]

Can anyone point me to the C# equivalent of the C++ CHttpFile object?

 

Basically the C++ code just queries the size of a BINARY file that will be downloaded, sets up a progress bar and then does the download.

 

Here is what I am converting:

CHttpFile *pHttpFile;
CFile file;

pHttpFile = (CHttpFile*)NetSession.OpenURL(m_cstrHTTPServer + "/TestFile.exe", 1, INTERNET_FLAG_TRANSFER_BINARY | INTERNET_FLAG_RELOAD);

// get the length of the file
dwTemp = 0;
if (pHttpFile->QueryInfo(HTTP_QUERY_CONTENT_LENGTH, cstrTemp))
dwTemp = atol(cstrTemp);

if (file.Open(m_cstrUpdatePath, CFile::modeCreate | CFile::modeWrite | CFile::typeBinary))
{
// copy 1KB at a time from server to local file
UINT nRead = pHttpFile->Read(szBuff, 1023);
while (nRead > 0)
{
	file.Write(szBuff, nRead);

	// make sure messages are still processed during this loop
	MSG msg;
	if(::PeekMessage(&msg,m_hWnd,0,0,TRUE))
	{
		::TranslateMessage(&msg);
		::DispatchMessage(&msg);
	}
	if (m_bStop) break;

	m_ctrlProgress.StepIt();

	// Add in bytes read
	ulTotalRead += nRead;

	cstrTemp.Format("Downloaded %d KB out of %d KB (%d%%).",
					ulTotalRead / 1024, dwTemp / 1024,
					(int)(((double)(ulTotalRead) / 1024.00) /
						((double)(dwTemp) / 1024.00) * 100.00));
	m_stStatus.SetWindowText(cstrTemp);

	nRead = pHttpFile->Read(szBuff, 1023);
}
file.Close();
}

 

I could use this:

 

System.Net.WebClient client = new System.Net.WebClient();
client.DownloadFile(UpdateServer + "/TestFile.exe","C:\\Data\\TestFile.bin"); 

 

which works, but doesn't allow me to update a progress bar like the C++ code. Does anyone have a C# example I could look at?

 

tia,

flynn

[PlausiblyDamp]

http://www.xtremedotnettalk.com/showthread.php?t=81155 might be what you want.

[flynn]

http://www.xtremedotnettalk.com/showthread.php?t=81155 might be what you want.

 

Excellent, Thank You PlausiblyDamp, and Thank You dynamic_sysop for the example.