GetPermissions- und SetPermissions-Methoden (Beispiel) (VB)

In diesem Beispiel werden die methoden GetPermissions und SetPermissions veranschaulicht. Der folgende Code bietet vollzugriff auf die Tabelle "Bestellungen" für den Administratorbenutzer.

' BeginGrantPermissionsVB  
Sub GrantPermissions()  
    On Error GoTo GrantPermissionsError  
  
    Dim cnn As New ADODB.Connection  
    Dim cat As New ADOX.Catalog  
    Dim lngPerm As Long  
  
    ' Opens a connection to the northwind database  
    ' using the Microsoft Jet 4.0 provider  
    cnn.Provider = "Microsoft.Jet.OLEDB.4.0"  
    cnn.Open "Data Source='Northwind.mdb';" & _  
        "jet oledb:system database=" & _  
        "'system.mdw'"  
  
    Set cat.ActiveConnection = cnn  
  
    ' Retrieve original permissions  
    lngPerm = cat.Users("admin").GetPermissions("Orders", adPermObjTable)  
    Debug.Print "Original permissions: " & Str(lngPerm)  
  
    ' Revoke all permissions  
    cat.Users("admin").SetPermissions "Orders", adPermObjTable, _  
        adAccessRevoke, adRightFull  
  
    ' Display permissions  
    Debug.Print "Revoked permissions: " & _  
        Str(cat.Users("admin").GetPermissions("Orders", adPermObjTable))  
  
    ' Give the Admin user full rights on the orders object  
    cat.Users("admin").SetPermissions "Orders", adPermObjTable, _  
        adAccessSet, adRightFull  
  
    ' Display permissions  
    Debug.Print "Full permissions: " & _  
        Str(cat.Users("admin").GetPermissions("Orders", adPermObjTable))  
  
    ' Restore original permissions  
    cat.Users("admin").SetPermissions "Orders", adPermObjTable, _  
        adAccessSet, lngPerm  
  
    ' Display permissions  
    Debug.Print "Final permissions: " & _  
        Str(cat.Users("admin").GetPermissions("Orders", adPermObjTable))  
  
    'Clean up  
    cnn.Close  
    Set cat = Nothing  
    Set cnn = Nothing  
    Exit Sub  
  
GrantPermissionsError:  
  
    Set cat = Nothing  
  
    If Not cnn Is Nothing Then  
        If cnn.State = adStateOpen Then cnn.Close  
    End If  
    Set cnn = Nothing  
  
    If Err <> 0 Then  
        MsgBox Err.Source & "-->" & Err.Description, , "Error"  
    End If  
  
End Sub  
' EndGrantPermissionsVB  

Siehe auch

Catalog-Objekt (ADOX)
GetPermissions-Methode (ADOX)
SetPermissions-Methode (ADOX)
User-Objekt (ADOX)
Users Collection (ADOX)