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RightsManagementInformation.LoadUseLicense(ContentUser) Méthode

Définition

Retourne une UseLicense incorporée d'un utilisateur spécifié depuis le flux de données chiffré de gestion des droits.

public:
 System::Security::RightsManagement::UseLicense ^ LoadUseLicense(System::Security::RightsManagement::ContentUser ^ userKey);
public System.Security.RightsManagement.UseLicense LoadUseLicense (System.Security.RightsManagement.ContentUser userKey);
member this.LoadUseLicense : System.Security.RightsManagement.ContentUser -> System.Security.RightsManagement.UseLicense
Public Function LoadUseLicense (userKey As ContentUser) As UseLicense

Paramètres

userKey
ContentUser

Utilisateur ou groupe d'utilisateurs pour lequel retourner la UseLicense.

Retours

UseLicense pour l'utilisateur spécifié ; ou null, si le package ne contient pas une UseLicense qui correspond à la userKey donnée.

Exceptions

Le paramètre userKey a la valeur null.

Les informations de gestion de droits dans ce package ne peuvent pas être lues par la version actuelle de cette classe.

Exemples

L'exemple suivant illustre l'utilisation de la méthode LoadUseLicense.

ShowStatus("   Opening the encrypted Package.");
EncryptedPackageEnvelope ePackage =
    EncryptedPackageEnvelope.Open(xpsFile, FileAccess.ReadWrite);
RightsManagementInformation rmi =
    ePackage.RightsManagementInformation;

ShowStatus("   Looking for an embedded UseLicense for user:\n       " +
           currentUserId + " [" + _authentication + "]");
UseLicense useLicense =
    rmi.LoadUseLicense(
        new ContentUser(currentUserId, _authentication));

ReadOnlyCollection<ContentGrant> grants;
if (useLicense == null)
{
    ShowStatus("   No Embedded UseLicense found.\n       " +
               "Attempting to acqure UseLicnese\n       " +
               "from the PublishLicense.");
    PublishLicense pubLicense = rmi.LoadPublishLicense();

    ShowStatus("   Referral information:");

    if (pubLicense.ReferralInfoName == null)
        ShowStatus("       Name: (null)");
    else
        ShowStatus("       Name: " + pubLicense.ReferralInfoName);

    if (pubLicense.ReferralInfoUri == null)
        ShowStatus("    Uri: (null)");
    else
        ShowStatus("    Uri: " +
            pubLicense.ReferralInfoUri.ToString());

    useLicense = pubLicense.AcquireUseLicense(_secureEnv);
    if (useLicense == null)
    {
        ShowStatus("   User DOES NOT HAVE RIGHTS\n       " +
            "to access this document!");
        return false;
    }
}// end:if (useLicense == null)
ShowStatus("   UseLicense acquired.");
ShowStatus("   Opening the encrypted Package.")
Dim ePackage As EncryptedPackageEnvelope = EncryptedPackageEnvelope.Open(xpsFile, FileAccess.ReadWrite)
Dim rmi As RightsManagementInformation = ePackage.RightsManagementInformation

ShowStatus("   Looking for an embedded UseLicense for user:" & vbLf & "       " & currentUserId & " [" & _authentication & "]")
Dim useLicense As UseLicense = rmi.LoadUseLicense(New ContentUser(currentUserId, _authentication))

Dim grants As ReadOnlyCollection(Of ContentGrant)
If useLicense Is Nothing Then
    ShowStatus("   No Embedded UseLicense found." & vbLf & "       " & "Attempting to acqure UseLicnese" & vbLf & "       " & "from the PublishLicense.")
    Dim pubLicense As PublishLicense = rmi.LoadPublishLicense()

    ShowStatus("   Referral information:")

    If pubLicense.ReferralInfoName Is Nothing Then
        ShowStatus("       Name: (null)")
    Else
        ShowStatus("       Name: " & pubLicense.ReferralInfoName)
    End If

    If pubLicense.ReferralInfoUri Is Nothing Then
        ShowStatus("    Uri: (null)")
    Else
        ShowStatus("    Uri: " & pubLicense.ReferralInfoUri.ToString())
    End If

    useLicense = pubLicense.AcquireUseLicense(_secureEnv)
    If useLicense Is Nothing Then
        ShowStatus("   User DOES NOT HAVE RIGHTS" & vbLf & "       " & "to access this document!")
        Return False
    End If
End If ' end:if (useLicense == null)
ShowStatus("   UseLicense acquired.")

S’applique à

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