De objectGUID van een object lezen en een tekenreeksweergave van de GUID maken

De eigenschap objectGUID van elk object in Active Directory Domain Services wordt opgeslagen in de map als een octettekenreeks. Een octettekenreeks is een matrix van een-bytetekens. Gebruik de methode IADs::get_GUID om de bindbare tekenreeksvorm van het objectGUID-van een mapobject op te halen.

In de volgende codevoorbeelden ziet u een functie die het kenmerk objectGUID leest en een tekenreeksweergave retourneert van de GUID die wordt gebruikt om aan het object te binden.

• Visual Basic Example
• C++-voorbeeld

Visual Basic Voorbeeld

Dim sADsPathObject As String
Dim sObjectGUID As String
Dim sBindByGuidStr As String
 
Dim IADsObject As IADs
Dim IADsObject2 As IADs
On Error Resume Next
 
' Query the user for an ADsPath to start.
sADsPathObject = InputBox("This code binds to a directory object by ADsPath, retrieves the GUID, then rebinds by GUID." & vbCrLf & vbCrLf & "Specify the ADsPath of the object to bind to :")
 
If sADsPathObject = "" Then
    GoTo CleanUp
End If
 
MsgBox "Binding to " & sADsPathObject
 
' Bind to initial object.
Set IADsObject = GetObject(sADsPathObject)
 
If (Err.Number <> 0) Then
   MsgBox Err.Number & " on GetObject method"
   GoTo CleanUp
End If
 
' Save the GUID of the object.
sObjectGUID = IADsObject.Guid
 
MsgBox "The GUID for " & vbCrLf & vbCrLf & sADsPathObject & vbCrLf & vbCrLf & " is " & vbCrLf & vbCrLf & sObjectGUID
 
' Release the initial object.
Set IADsObject = Nothing
 
' Build a string for Binding to the object by GUID.
sBindByGuidStr = "LDAP://<GUID=" & sObjectGUID & ">"

MsgBox sBindByGuidStr
 
' Bind BACK to the Same object using the GUID.
Set IADsObject = GetObject(sBindByGuidStr)
 
If (Err.Number <> 0) Then
   MsgBox Err.Number & " on GetObject method "
   GoTo CleanUp
End If
 
MsgBox "Successfully RE bound to " & sADsPathObject & vbCrLf & vbCrLf & " using the path:" & vbCrLf & vbCrLf & sBindByGuidStr
 
' Release bind by GUID Object.
CleanUp:
   Set IADsObject = Nothing

C++-voorbeeld

#define UNICODE
#include <ole2.h>
#include <stdio.h>
#include <activeds.h>

#define PATH_SIZE 1024

void wmain(int argc, wchar_t *argv[])
{
    // Initialize COM.
    CoInitialize(0);
     
    WCHAR wszADsPathObject[PATH_SIZE + 1];
    HRESULT hr;
    IADs *pIADsObject = NULL;
    IADs *pIADsObjectByGuid = NULL;
     
    // If no ADsPath was specified on the command line, query the user for a ADsPath to start.
    if(!argv[1])
    {
        _putws(L"This code binds to a directory object by ADsPath, retrieves the GUID,\n"
            L" then rebinds by GUID. \n\nEnter the ADsPath of the object to bind to :\n");
        fgetws(wszADsPathObject, PATH_SIZE, stdin);
    }
    else
    {
        wcsncpy_s(wszADsPathObject, argv[1], PATH_SIZE - 1);
        wszADsPathObject[PATH_SIZE] = 0;
    }
     
    if (!wszADsPathObject[0])
    {
        return;
    }
     
    wprintf(L"\nBinding to %s\n", wszADsPathObject);
     
    // Bind to initial object.
    hr = ADsGetObject(wszADsPathObject, IID_IADs, (void**)&pIADsObject);
    if (SUCCEEDED(hr))
    {
        BSTR bstrGuid = NULL;
        hr = pIADsObject->get_GUID(&bstrGuid); 
        
        if (SUCCEEDED(hr))
        {
            LPWSTR wszFormat = L"LDAP://<GUID=%s>";
            LPWSTR pwszBindByGuidStr; 

            wprintf(L"\n The GUID for\n\n%s\n\nis\n\n%s\n", wszADsPathObject, bstrGuid);
     
            // Build a string for Binding to the object by GUID.
            pwszBindByGuidStr = new WCHAR[wcslen(wszFormat) + wcslen(bstrGuid) + 1];
            if(pwszBindByGuidStr)
            {
                swprintf_s(pwszBindByGuidStr, wszFormat, bstrGuid);
         
                // Bind BACK to the Same object using the GUID.
                hr = ADsGetObject(pwszBindByGuidStr, IID_IADs, (void**)&pIADsObjectByGuid);
                 
                if (SUCCEEDED(hr))
                {
                    wprintf(L"\nSuccessfully re-bound to\n\n%s\n\nUsing the path:\n\n%s\n", 
                        wszADsPathObject, pwszBindByGuidStr);
         
                    // Release bind by GUID Object.
                    pIADsObjectByGuid->Release();
                    pIADsObjectByGuid = NULL;
                }

                delete pwszBindByGuidStr;
            }
            else
            {
                hr = E_OUTOFMEMORY;
            }
     
            SysFreeString(bstrGuid);
        }
     
        pIADsObject->Release();
        pIADsObject = NULL;
    }
     
    if (FAILED(hr))
    {
        wprintf(L"Failed");
    }
}