Classe LogoutOperation

Tipo di operazione restituito dalle operazioni Logout su AuthenticationService.

Spazio dei nomi: System.ServiceModel.DomainServices.Client.ApplicationServices
Assembly: System.ServiceModel.DomainServices.Client (in system.servicemodel.domainservices.client.dll)

Utilizzo

'Utilizzo
Dim instance As LogoutOperation

Sintassi

'Dichiarazione
Public NotInheritable Class LogoutOperation
    Inherits AuthenticationOperation

public sealed class LogoutOperation : AuthenticationOperation

public ref class LogoutOperation sealed : public AuthenticationOperation

public final class LogoutOperation extends AuthenticationOperation

public final class LogoutOperation extends AuthenticationOperation

Esempio

Nell'esempio seguente viene illustrata una chiamata al metodo Logout con il metodo callback che accetta un oggetto LogoutOperation come parametro.

Protected Overrides Sub OnNavigatedTo(ByVal e As System.Windows.Navigation.NavigationEventArgs)
    SetControlVisibility(WebContext.Current.User.IsAuthenticated)
End Sub

Private Sub LoginButton_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Dim lp As LoginParameters = New LoginParameters(UserName.Text, Password.Password)
    WebContext.Current.Authentication.Login(lp, AddressOf Me.LoginOperation_Completed, Nothing)
    LoginButton.IsEnabled = False
    LoginResult.Text = ""
End Sub

Private Sub LoginOperation_Completed(ByVal lo As LoginOperation)
    If (lo.HasError) Then
        LoginResult.Text = lo.Error.Message
        LoginResult.Visibility = System.Windows.Visibility.Visible
        lo.MarkErrorAsHandled()
    ElseIf (lo.LoginSuccess = False) Then
        LoginResult.Text = "Login failed. Please check user name and password."
        LoginResult.Visibility = System.Windows.Visibility.Visible
    ElseIf (lo.LoginSuccess = True) Then
        SetControlVisibility(True)
    End If
    LoginButton.IsEnabled = True
End Sub

Private Sub SetControlVisibility(ByVal isAuthenticated As Boolean)
    If (isAuthenticated) Then
        LoginBorder.Visibility = System.Windows.Visibility.Collapsed
        WelcomeText.Text = "Welcome " + WebContext.Current.User.Name
        WelcomeText.Visibility = System.Windows.Visibility.Visible
        LogoutButton.Visibility = System.Windows.Visibility.Visible
    Else
        LoginBorder.Visibility = System.Windows.Visibility.Visible
        WelcomeText.Visibility = System.Windows.Visibility.Collapsed
        LogoutButton.Visibility = System.Windows.Visibility.Collapsed
    End If
End Sub

Private Sub LogoutButton_Click(ByVal sender As Object, ByVal e As RoutedEventArgs)
    WebContext.Current.Authentication.Logout(AddressOf Me.LogoutOperation_Completed, Nothing)
End Sub

Private Sub LogoutOperation_Completed(ByVal lo As LogoutOperation)
    If (Not (lo.HasError)) Then
        SetControlVisibility(False)
    Else
        Dim ew As ErrorWindow = New ErrorWindow("Logout failed.", "Please try logging out again.")
        ew.Show()
        lo.MarkErrorAsHandled()
    End If
End Sub

protected override void OnNavigatedTo(NavigationEventArgs e)
{
    SetControlVisibility(WebContext.Current.User.IsAuthenticated);
}

private void LoginButton_Click(object sender, RoutedEventArgs e)
{
    LoginParameters lp = new LoginParameters(UserName.Text, Password.Password);
    WebContext.Current.Authentication.Login(lp, this.LoginOperation_Completed, null);
    LoginButton.IsEnabled = false;
    LoginResult.Text = "";
}

private void LoginOperation_Completed(LoginOperation lo)
{
    if (lo.HasError)
    {
        LoginResult.Text = lo.Error.Message;
        LoginResult.Visibility = System.Windows.Visibility.Visible;
        lo.MarkErrorAsHandled();
    }
    else if (lo.LoginSuccess == false)
    {
        LoginResult.Text = "Login failed. Please check user name and password.";
        LoginResult.Visibility = System.Windows.Visibility.Visible;
    }
    else if (lo.LoginSuccess == true)
    {
        SetControlVisibility(true);
    }
    LoginButton.IsEnabled = true;
}

private void SetControlVisibility(bool isAuthenticated)
{
    if (isAuthenticated)
    {
        LoginBorder.Visibility = System.Windows.Visibility.Collapsed;
        WelcomeText.Text = "Welcome " + WebContext.Current.User.Name;
        WelcomeText.Visibility = System.Windows.Visibility.Visible;
        LogoutButton.Visibility = System.Windows.Visibility.Visible;
    }
    else
    {
        LoginBorder.Visibility = System.Windows.Visibility.Visible;
        WelcomeText.Visibility = System.Windows.Visibility.Collapsed;
        LogoutButton.Visibility = System.Windows.Visibility.Collapsed;
    }
}

private void LogoutButton_Click(object sender, RoutedEventArgs e)
{
    WebContext.Current.Authentication.Logout(this.LogoutOperation_Completed, null);
}

private void LogoutOperation_Completed(LogoutOperation lo)
{

    if (!lo.HasError)
    {
        SetControlVisibility(false);
    }
    else
    {
        ErrorWindow ew = new ErrorWindow("Logout failed.", "Please try logging out again.");
        ew.Show();
        lo.MarkErrorAsHandled();
    }
}

Gerarchia di ereditarietà

System.Object
   System.ServiceModel.DomainServices.Client.OperationBase
     System.ServiceModel.DomainServices.Client.ApplicationServices.AuthenticationOperation
      System.ServiceModel.DomainServices.Client.ApplicationServices.LogoutOperation

Sicurezza dei thread

Tutti i membri statici pubblici (Shared in Visual Basic) di questo tipo sono thread-safe. Non è invece garantita la sicurezza dei membri dell'istanza.

Piattaforme

Piattaforme di sviluppo

Windows XP Home Edition, Windows XP Professional, Windows Server 2003 , Windows Server 2008 e Windows 2000

Piattaforme di destinazione

Change History

Vedere anche

Riferimento

Membri LogoutOperation
Spazio dei nomi System.ServiceModel.DomainServices.Client.ApplicationServices