calling webservices?

[ritz1234]

Hello friends, I've a IE toolbar in which I call the webservices written in C#. There is one webservice for uploading a file. Everything works fine in XP but in Vista after uploading 1 file successfully I am not able to upload any other files and the responseText for all the remaining file is empty?Can anybody help me out.

MSXML::IXMLHttpRequestPtr httpReq( _uuidof(XMLHTTPRequest));

	\_bstr\_t  HTTPMethod;
	\_variant\_t noAsync = \_variant\_t((bool)false);

	HTTPMethod = \_bstr\_t("POST");
	httpReq->open(HTTPMethod ,"https://localhost/common/qptwebservicedownload.asmx",noAsync,vtMissing,vtMissing);
	httpReq->setRequestHeader("Content-Type","application/soap+xml");
		
	data = NULL;
	strBase64.Empty(); 

	CString defaultJpgAlertCasheFilename=ob.FilePath;
	unsigned \_\_int64 AttachmentSize=SubGetFileSize(defaultJpgAlertCasheFilename);			
	
	CFile sourceFile;
	sourceFile.Open(defaultJpgAlertCasheFilename,CFile::modeRead);
	
	data = new BYTE \[AttachmentSize\];
	sourceFile.Read(data, AttachmentSize);
	sourceFile.Close();
			
	CBase64 ob1;
	ob1.Encode(data,AttachmentSize);
	ob1.m\_pEBuffer; 
		
	strBase64=CString(ob1.m\_pEBuffer);
	Part1="<?xml version=\\"1.0\\" encoding=\\"utf-8\\"?> \\
	<soap12:Envelope xmlns:xsi=\\"http://www.w3.org/2001/XMLSchema-instance\\" xmlns:xsd=\\"http://www.w3.org/2001/XMLSchema\\" xmlns:soap12=\\"http://www.w3.org/2003/05/soap-envelope\\"> \\
	<soap12:Body>\\
	<UploadFile xmlns=\\"http://rigelnetworks.net/\\">";

	Part2="<ByteArr>";
	Part2+=strBase64;
	Part2+="</ByteArr>";

	Part2+="<FormletDocletID>";
	Part2+=ob.FormletId;
	Part2+="</FormletDocletID>";

	Part2+="<IsFormlet>";
	Part2+=ob.BitField;
	Part2+="</IsFormlet>";
	
	Part3="</UploadFile>\\
	</soap12:Body>\\
	</soap12:Envelope>";

	szRequest=Part1;
	szRequest+=Part2;
	szRequest+=Part3;
	
	vRequest.vt = VT\_BSTR;
	vRequest.bstrVal = szRequest.AllocSysString();

	HRESULT hr=httpReq->send(vRequest);

	\_bstr\_t bsResponse = httpReq->responseText;

	CString response;
	response=bsResponse.copy();

	nPos1=response.Find("<UploadFileResult>");
	nPos2=response.Find("</UploadFileResult>"); 
	nPos1+=18;
	szResult=response.Mid(nPos1,(nPos2-nPos1)); 
	
	if(szResult.GetLength()>0)
	{
		szResult.MakeLower();
		if(szResult=="true")
			bFlg=true;
	}

In Vista the _bstr_t bsResponse = httpReq->responseText; contains vali