讀取架構

大部分的提供者都支援Active Directory 隨附的架構。 架構包含類別和屬性定義。 ADSI 會將 「Provider://schema」 中的架構抽象化。 每個物件都會攜帶其類別定義所在的架構位置。 您可以使用 IADs：：get_Class 屬性方法來取得此資訊。

若要系結至特定網域上的架構容器，請執行下列動作：

Dim SchemaContainer As Object
Set SchemaContainer = GetObject("LDAP://Fabrikam/Schema")

hr = ADsGetObject(L"LDAP://Fabrikam/Schema", IID_IADsContainer, (void**) &pSchema );

若要列出架構容器中的資訊，請系結至容器並列舉容器中的每個物件，如下所示：

Dim prop As Object
Dim obj As Object
Dim SchemaContainer As Object
Dim Class As Object

Set SchemaContainer = GetObject("LDAP://Fabrikam/Schema")
'Show all items in the schema container
For Each obj In SchemaContainer
     Debug.Print obj.Name & " (" & obj.Class & ")"
Next

'Show the optional attributes
For Each prop In Class.OptionalProperties
   Debug.Print prop
Next

IADsContainer *pSchema=NULL;
 HRESULT hr;

 CoInitialize(NULL);

 hr = ADsGetObject(L"LDAP://Fabrikam/Schema", 
                   IID_IADsContainer, (void**) &pSchema );

 if ( !SUCCEEDED(hr) )
 {
   return hr;
 }

 // Enumerate schema objects
 IEnumVARIANT *pEnum = NULL;
 hr = ADsBuildEnumerator( pSchema, &pEnum );
 pSchema->Release(); // This is no longer needed, since we have the enumerator already.
    
 if ( SUCCEEDED(hr) )
 {
   VARIANT var;
   ULONG lFetch;
   IADs *pChild=NULL;
   VariantInit(&var);
        
   while( SUCCEEDED(ADsEnumerateNext( pEnum, 1, &var, &lFetch )) && lFetch == 1 )
   {
     hr = V_DISPATCH(&var)->QueryInterface( IID_IADs, (void**) &pChild );
     if ( SUCCEEDED(hr) )
     {
       BSTR bstrName;
       BSTR bstrClass;
       // Get more information on the child classes
       pChild->get_Name(&bstrName);
       pChild->get_Class(&bstrClass);
                
       printf("%S\t\t(%S)\n", bstrName, bstrClass );
                
       // Clean-up
       SysFreeString(bstrName);
       SysFreeString(bstrClass);
                
       pChild->Release();
     }
     VariantClear(&var);
   }
 }

 CoUninitialize();

您也可以繫結至 物件並取得架構位置，如下列所示：

Dim prop As Object
Dim dom As Object
Dim Class As Object

Set dom = GetObject("LDAP://Fabrikam")
Debug.Print dom.Schema
Set Class = GetObject(dom.Schema)
'Mandatory attributes
For Each prop In Class.MandatoryProperties
    Debug.Print prop
Next