<?xml version='1.0'?>
<Collection xmlns="x-schema:books">
   <Book>
    <Title>Lover Birds</Title>
    <Author>Cynthia Randall</Author>
       <Title>Lover Birds</Title>
       <Title>the secord title</Title>
       <Title>the third title</Title>  
      <Publisher>Lucerne Publishing</Publisher>
   </Book>
</Collection>

books.xsd
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
  <xs:element name="Collection">
    <xs:complexType>
      <xs:sequence>
        <xs:element name="OtherBook">
          <xs:complexType>
            <xs:sequence>
              <xs:element name="Title" type="xs:string" maxOccurs="1" />
              <xs:element name="Author" type="xs:string" />
              <xs:element name="Publisher" type="xs:string" />
            </xs:sequence>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>
</xs:schema>

用vc写的验证的接口

bool   CURLManagerApp::schemas()
{
    ::CoInitialize(NULL);
   IXMLDOMDocument2Ptr pIXMLDOMDocument2;
   IXMLDOMSchemaCollection2Ptr pIXMLDOMSchemaCollection2Ptr;
   int nResult;
   
   try
   {
   // Create the DOM
      nResult = pIXMLDOMDocument2.CreateInstance(__uuidof(MSXML2::DOMDocument40));
      (nResult == 0) ? 0: throw nResult;

   // Create the Schema Collections
      nResult = pIXMLDOMSchemaCollection2Ptr.CreateInstance(__uuidof(MSXML2::XMLSchemaCache40));
      (nResult == 0) ? 0: throw nResult;
   
   // Add the schema to the collection
      nResult = pIXMLDOMSchemaCollection2Ptr->add(_T("x-schema:books"), _T("books.xsd"));
      (nResult == 0) ? 0: throw nResult;
      
   // Attach schemas
      pIXMLDOMDocument2->schemas = pIXMLDOMSchemaCollection2Ptr.GetInterfacePtr();

      pIXMLDOMDocument2->async = false;
      pIXMLDOMDocument2->validateOnParse = true;

   // Load the document into the DOM
      nResult = pIXMLDOMDocument2->load(_T("books.xml"));
      (nResult == -1) ? 0: throw nResult;

   
      ::MessageBox(NULL, pIXMLDOMDocument2->xml, _T("Loaded Document"), MB_OK);
   } catch(...)
   {
      ::MessageBox(NULL, _T("Sample Failed"), _T("Error"), MB_OK);
   }
   ::CoUninitialize();
   return true;

}

这个books.xml中 autor 和title的顺序不符合books.xsd，而且title也出现了不止1次，为什么在程序中books.xml还是会正常导入呢？ 当xml文件不符合xsd文件规则时，不是应该load失败吗？ 再问怎么截获load失败信息啊？？
我是新手，这个问题很弱智，希望达人解答。万谢！