XML Schema Validation

[spUnk]

I'm having problems with some XML schema validation. The problem occurs when I perform and add to a schema collection:

IXMLDOMSchemaCollection2 *pIXMLDOMSchemaCollection=NULL;

HRESULT hr = CoCreateInstance( CLSID_XMLSchemaCache40, NULL, CLSCTX_SERVER, IID_IXMLDOMSchemaCollection,
(LPVOID*)( &pIXMLDOMSchemaCollection) );

SUCCEEDED(hr) ? 0 : throw hr;

hr = pIXMLDOMSchemaCollection->add( _bstr_t( _T("&quot ),
_variant_t("Schema.xsd&quot);
//...

Now this add works fine as long as the Schema is balled up in one nice little file. Unfortunately, the powers that be have decided to split this up into 3 files. Let's say Schema.xsd includes Schema2.xsd includes Schema3.xsd:

Schema.xsd:
<xs:schema xmlns:xs=&quot;

http://www.w3.org/2001/XMLSchema&quot;

xs:noNamespaceSchemaLocation=&quot;&quot; elementFormDefault=&quot;qualified&quot; attributeFormDefault=&quot;unqualified&quot;>
<xs:include schemaLocation=&quot;Schema2.xsd&quot;/>

Similar for Schema2.xsd...I know the &quot;include schemaLocation&quot; is used by xmlSpy, which is the tool the files I'm working with were created.

Does anyone know a way that validation against schema can be accomplished if the schema is split into more than one file?

Any comments and suggestions are greatly appreciated.

Thanks,
Kenneth Woodruff