MSXML6 C++ unable to locate node

[=?Utf-8?B?ai5hLiBoYXJyaW1hbg==?=]

Hi, I am new to using the MSXML functions in C++. I found this on MSDN as
an example of what I wanted to do,
http://msdn2.microsoft.com/en-us/library/ms765465.aspx.

I have tried a number of XPATH examples to try and retrieve the
"><Code>124 55</Code>", but have been unable to do so. The MSDN example works
fine. So, I am wondering if it's a namespace issue?

Any help would be appreciated. Thanks. Jeff

I have changed the code as follows:
int _tmain(int argc, _TCHAR* argv[])
{
CString sResponse = "<?xml version=\"1.0\" encoding=\"utf-8\" ?<string
xmlns=\"http://tempuri.org/\"><InquiryResp onse><Code>1245 5</Code></InquiryResponse ></string>";

//CString sResponse = "<?xml version=\"1.0\" ?><?xml:stylesh eet
type=\"text/xsl\" href=\"stock.xs l\"?><portfol io
xmlns:dt=\"urn: schemas-microsoft-com:datatypes\" <stock
exchange=\"nasd aq\" <name>new</name <symbol>zzzz</symbol <price
dt:dt=\"number\ ">20.313</price </stock <stock exchange=\"nyse \">
<name>zacx corp</name <symbol>ZCXM</symbol <price
dt:dt=\"number\ ">28.875</price </stock <stock exchange=\"nasd aq\">
<name>zaffyma t inc</name <symbol>ZFFX</symbol <price
dt:dt=\"number\ ">92.250</price </stock <stock exchange=\"nasd aq\">
<name>zysmerg y inc</name <symbol>ZYSZ</symbol <price
dt:dt=\"number\ ">20.313</price </stock></portfolio>";
BSTR bstr = sResponse.Alloc SysString();
BSTR bstr2 = '\0';

IXMLDOMDocument *pXMLDom=NULL;
IXMLDOMParseErr or *pXMLErr=NULL;
IXMLDOMNode *pNode=NULL;

VARIANT_BOOL status;
VARIANT var;
HRESULT hr;

CoInitialize(NU LL);

pXMLDom = DomFromCOM();
if (!pXMLDom)
goto clean;

// Load the XML string into the DOM Object
HRCALL(pXMLDom->loadXML(bstr , &status), "");

if (status!=VARIAN T_TRUE)
{
HRCALL(pXMLDom->get_parseError (&pXMLErr),"" );
HRCALL(pXMLErr->get_reason(&bs tr),"");
dprintf("Failed to load DOM from string. %S\n",
bstr);
goto clean;
}

HRCALL(pXMLDom->get_xml(&bstr2 ), "");
dprintf("XML DOM loaded from string:\n%S\n", bstr2);

Sleep(3000);

// Query a single node.
if (bstr2)
SysFreeString(b str2);

bstr2 = SysAllocString( L"//InquiryResponse/Code/*"); // Nothing
//bstr2 = SysAllocString( L"//InquiryResponse/*"); //Nothing
//bstr2 = SysAllocString( L"//*"); // Works
//bstr2 = SysAllocString( L"//string/InquiryResponse/Code"); // Nothing
//bstr2 = SysAllocString( L"//*"); // Too much info
HRCALL(pXMLDom->selectSingleNo de(bstr2, &pNode), "dom->selectSingleNo de:
");
if (!pNode)
{
ReportParseErro r(pXMLDom, "Calling selectSingleNod e ");
}
else
{
dprintf("Result from selectSingleNod e:\n");
if (bstr2)
SysFreeString(b str2);
HRCALL(pNode->get_nodeName(& bstr2)," get_nodeName ");
dprintf("Node, <%S>:\n", bstr2);
if (bstr)
SysFreeString(b str2);
HRCALL(pNode->get_xml(&bstr2 ), "get_xml: ");
dprintf("\t%S\n \n", bstr2);
Sleep(15000);
}

clean:
if (bstr) SysFreeString(b str);
if (&var) VariantClear(&v ar);
if (pXMLErr) pXMLErr->Release();
if (pXMLDom) pXMLDom->Release();

CoUninitialize( );
return 0;

}

[Bjoern Hoehrmann]

* j.a. harriman wrote in microsoft.publi c.dotnet.xml:

>I have tried a number of XPATH examples to try and retrieve the
"><Code>1245 5</Code>", but have been unable to do so. The MSDN example works
fine. So, I am wondering if it's a namespace issue?

It is. You have to declare prefixes for the namespaces you are using and
use them in your expressions as appropriate. For example, you could de-
clare "tmp" = ""http://tempuri.org/" and then use /tmp:string in your
example. The MSDN documentation for selectNodes has a C++ example for
how to declare namespace prefixes.
--
Björn Höhrmann · mailto:bj****@h oehrmann.de · http://bjoern.hoehrmann.de
Weinh. Str. 22 · Telefon: [phone] · http://www.bjoernsworld.de
68309 Mannheim · PGP Pub. KeyID: 0xA4357E78 · http://www.websitedev.de/

[Martin Honnen]

j.a. harriman wrote:

CString sResponse = "<?xml version=\"1.0\" encoding=\"utf-8\" ?<string
xmlns=\"http://tempuri.org/\"><InquiryResp onse><Code>1245 5</Code></InquiryResponse ></string>";

The elements are in the default namespace so with MSXML you need e.g.
(JScript syntax, translate to C++ as needed)
xmlDocument.set Property('Selec tionNamespaces' ,
'xmlns:pf="http ://tempuri.org/"');
xmlDocument.sel ectNodes('pf:st ring/pf:InquiryRespo nse')

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/

[=?Utf-8?B?ai5hLiBoYXJyaW1hbg==?=]

Thanks for pointing me in the right direction.

I've been meaning to update this for others who come along. Or in case I
forget!

The "IXMLDOMDocumen t" (in my original post) had to be a "IXMLDOMDocumen t2"
to access the "setPropert y" function that the "IXMLDOMDocumen t" doesn't have.

And also had to add the following:
CString s = "SelectionNames paces";
BSTR name = s.AllocSysStrin g();
BSTR x = SysAllocString( L"xmlns:pf=\"ht tp://tempuri.org/\"");
VARIANT myVariant;
myVariant.vt = VT_BSTR;
myVariant.bstrV al = x;

so, here was the call:
hr = pXMLDom->setProperty(na me, myVariant);

// Release values
if (x) SysFreeString(x );
if (name) SysFreeString(n ame);
if (&myVariant) VariantClear(&m yVariant);

I also recommend downloading the sample "VariantUse "
http://msdn2.microsoft.com/en-us/lib...38(VS.80).aspx
that proved invaluable for me.
Jeff
"Martin Honnen" wrote:

j.a. harriman wrote:

CString sResponse = "<?xml version=\"1.0\" encoding=\"utf-8\" ?<string
xmlns=\"http://tempuri.org/\"><InquiryResp onse><Code>1245 5</Code></InquiryResponse ></string>";

The elements are in the default namespace so with MSXML you need e.g.
(JScript syntax, translate to C++ as needed)
xmlDocument.set Property('Selec tionNamespaces' ,
'xmlns:pf="http ://tempuri.org/"');
xmlDocument.sel ectNodes('pf:st ring/pf:InquiryRespo nse')

--

Martin Honnen --- MVP XML
http://JavaScript.FAQTs.com/