length Property (IXMLDOMNamedNodeMap)

Script Syntax

lValue = oXMLDOMNamedNodeMap.length;

Example

var xmlDoc = new ActiveXObject("Msxml2.DOMDocument.5.0");
var nodeBook, namedNodeMap;
xmlDoc.setProperty("SelectionLanguage", "XPath");
xmlDoc.async = false;
xmlDoc.load("books.xml");
if (xmlDoc.parseError.errorCode <> 0) {
   var myErr = xmlDoc.parseError;
   alert("You have error " + myErr.reason);
} else {
   nodeBook = xmlDoc.selectSingleNode("//book");
   namedNodeMap = nodeBook.attributes;
   alert(namedNodeMap.length);
}

Visual Basic Syntax

lValue = oXMLDOMNamedNodeMap.length

Example

Dim xmlDoc As New Msxml2.DOMDocument50
Dim nodeBook As IXMLDOMElement
Dim namedNodeMap As IXMLDOMNamedNodeMap
xmlDoc.setProperty "SelectionLanguage", "XPath"
xmlDoc.async = False
xmlDoc.Load "books.xml"
If (xmlDoc.parseError.errorCode <> 0) Then
   Dim myErr
   Set myErr = xmlDoc.parseError
   MsgBox("You have error " & myErr.reason)
Else
   Set nodeBook = xmlDoc.selectSingleNode("//book")
   Set namedNodeMap = nodeBook.Attributes
   MsgBox namedNodeMap.length
End If

C/C++ Syntax

HRESULT get_length(
    long *listLength);

Parameters

listLength [out, retval]

The number of items in the collection.

C/C++ Return Values

S_OK

The value returned if successful.

E_INVALIDARG

The value returned if the listLength is Null.

Example

IXMLDOMNode *pIXMLDOMNode = NULL;
IXMLDOMNamedNodeMap *pIXMLDOMNamedNodeMap = NULL;
IXMLDOMElement *pIXMLDOMElement = NULL;
long lLength;
TCHAR strTemp[10];
HRESULT hr;
IXMLDOMDocument *pIXMLDOMDocument = NULL;

try
{
   // Create an instance of DOMDocument and initialize pIXMLDOMDocument.
   // Load/create an XML fragment.
   hr = pIXMLDOMDocument->get_documentElement(&pIXMLDOMElement);
   SUCCEEDED(hr) ? 0 : throw hr;

   if(pIXMLDOMElement)
   {
      hr = pIXMLDOMElement->get_attributes(&pIXMLDOMNamedNodeMap);
      if(SUCCEEDED(hr) && pIXMLDOMNamedNodeMap)
      {
         hr = pIXMLDOMNamedNodeMap->get_length(&lLength);
         if(SUCCEEDED(hr))
         {
            _itot(lLength, strTemp, 10);
            ::MessageBox(NULL, strTemp, _T("Number of Attributes"), MB_OK);
         }
         pIXMLDOMNamedNodeMap->Release();
         pIXMLDOMNamedNodeMap = NULL;
      }
      pIXMLDOMElement->Release();
      pIXMLDOMElement = NULL;
   }
}
catch(...)
{
   if(pIXMLDOMElement)
      pIXMLDOMElement->Release();
   if(pIXMLDOMNamedNodeMap)
      pIXMLDOMNamedNodeMap->Release();
   DisplayErrorToUser();
}
// Release pIXMLDOMDocument when finished with it.