OperationBehaviorAttribute.Impersonation Propriété

public:
 property System::ServiceModel::ImpersonationOption Impersonation { System::ServiceModel::ImpersonationOption get(); void set(System::ServiceModel::ImpersonationOption value); };

public System.ServiceModel.ImpersonationOption Impersonation { get; set; }

member this.Impersonation : System.ServiceModel.ImpersonationOption with get, set

Public Property Impersonation As ImpersonationOption

Valeur de propriété

Une des valeurs de l'objet ImpersonationOption. La valeur par défaut est NotAllowed.

Exemples

L'exemple de code de service suivant demande un emprunt d'identité en affectant à la propriété Impersonation la valeur Required.

using System;
using System.Collections.Generic;
using System.ServiceModel;
using System.Threading;

namespace Microsoft.WCF.Documentation
{
  [ServiceContract(
    Name="SampleHello",
    Namespace="http://microsoft.wcf.documentation"
  )]
  public interface IHello
  {
    [OperationContract]
    string Hello(string greeting);
  }

  public class HelloService : IHello
  {

    public HelloService()
    {
      Console.WriteLine("Service object created: " + this.GetHashCode().ToString());
    }

    ~HelloService()
    {
      Console.WriteLine("Service object destroyed: " + this.GetHashCode().ToString());
    }

    [OperationBehavior(Impersonation=ImpersonationOption.Required)]
    public string Hello(string greeting)
    {
      Console.WriteLine("Called by: " + Thread.CurrentPrincipal.Identity.Name);
      Console.WriteLine("IsAuthenticated: " + Thread.CurrentPrincipal.Identity.IsAuthenticated.ToString());
      Console.WriteLine("AuthenticationType: " + Thread.CurrentPrincipal.Identity.AuthenticationType.ToString());

      Console.WriteLine("Caller sent: " + greeting);
      Console.WriteLine("Sending back: Hi, " + Thread.CurrentPrincipal.Identity.Name);
      return "Hi, " + Thread.CurrentPrincipal.Identity.Name;
    }
  }
}

Imports System.ServiceModel
Imports System.Threading

Namespace Microsoft.WCF.Documentation
  <ServiceContract(Name:="SampleHello", Namespace:="http://microsoft.wcf.documentation")> _
  Public Interface IHello
    <OperationContract> _
    Function Hello(ByVal greeting As String) As String
  End Interface

  Public Class HelloService
      Implements IHello

    Public Sub New()
      Console.WriteLine("Service object created: " & Me.GetHashCode().ToString())
    End Sub

    Protected Overrides Sub Finalize()
      Console.WriteLine("Service object destroyed: " & Me.GetHashCode().ToString())
    End Sub

    <OperationBehavior(Impersonation:=ImpersonationOption.Required)> _
    Public Function Hello(ByVal greeting As String) As String Implements IHello.Hello
      Console.WriteLine("Called by: " & Thread.CurrentPrincipal.Identity.Name)
      Console.WriteLine("IsAuthenticated: " & Thread.CurrentPrincipal.Identity.IsAuthenticated.ToString())
      Console.WriteLine("AuthenticationType: " & Thread.CurrentPrincipal.Identity.AuthenticationType.ToString())

      Console.WriteLine("Caller sent: " & greeting)
      Console.WriteLine("Sending back: Hi, " & Thread.CurrentPrincipal.Identity.Name)
      Return "Hi, " & Thread.CurrentPrincipal.Identity.Name
    End Function
  End Class
End Namespace

L'exemple de code suivant illustre l'utilisation de la propriété ClientCredentials pour définir les informations d'identification de l'application cliente avant d'appeler l'opération qui a besoin de ces informations pour l'emprunt d'identité.

using System;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.Security.Principal;
using System.Threading;

namespace Microsoft.WCF.Documentation
{
  public class Client
  {
    public void Run()
    {
      // Picks up configuration from the config file.
      SampleHelloClient wcfClient = new SampleHelloClient();
      try
      {
        // Set the client credentials to permit impersonation. You can do this programmatically or in the configuration file.
        wcfClient.ClientCredentials.Windows.AllowedImpersonationLevel = TokenImpersonationLevel.Impersonation;

        // Make calls using the proxy.
        Console.ForegroundColor = ConsoleColor.White;
        Console.WriteLine("Enter a greeting to send and press ENTER: ");
        Console.Write(">>> ");
        Console.ForegroundColor = ConsoleColor.Green;
        string greeting = Console.ReadLine();
        Console.ForegroundColor = ConsoleColor.White;
        Console.WriteLine("Called service with: \r\n\t" + greeting);
        Console.WriteLine("Service returned: " + wcfClient.Hello(greeting));
        Console.ForegroundColor = ConsoleColor.Blue;
        Console.Write("Press ");
        Console.ForegroundColor = ConsoleColor.Red;
        Console.Write("ENTER");
        Console.ForegroundColor = ConsoleColor.Blue;
        Console.Write(" to exit...");
        Console.ReadLine();
        wcfClient.Close();
      }
      catch (TimeoutException timeProblem)
      {
        Console.WriteLine("The service operation timed out. " + timeProblem.Message);
        wcfClient.Abort();
        Console.Read();
      }
      catch (CommunicationException commProblem)
      {
        Console.WriteLine("There was a communication problem. " + commProblem.Message);
        wcfClient.Abort();
        Console.Read();
      }
    }
    public static void Main()
    {
      Client client = new Client();
      client.Run();
    }
  }
}

Imports System.ServiceModel
Imports System.ServiceModel.Channels
Imports System.Security.Principal
Imports System.Threading

Namespace Microsoft.WCF.Documentation
  Public Class Client
    Public Sub Run()
      ' Picks up configuration from the config file.
      Dim wcfClient As New SampleHelloClient()
      Try
        ' Set the client credentials to permit impersonation. You can do this programmatically or in the configuration file.
        wcfClient.ClientCredentials.Windows.AllowedImpersonationLevel = TokenImpersonationLevel.Impersonation

        ' Make calls using the proxy.
        Console.ForegroundColor = ConsoleColor.White
        Console.WriteLine("Enter a greeting to send and press ENTER: ")
        Console.Write(">>> ")
        Console.ForegroundColor = ConsoleColor.Green
                Dim greeting = Console.ReadLine()
        Console.ForegroundColor = ConsoleColor.White
        Console.WriteLine("Called service with: " & vbCrLf & vbTab & greeting)
        Console.WriteLine("Service returned: " & wcfClient.Hello(greeting))
        Console.ForegroundColor = ConsoleColor.Blue
        Console.Write("Press ")
        Console.ForegroundColor = ConsoleColor.Red
        Console.Write("ENTER")
        Console.ForegroundColor = ConsoleColor.Blue
        Console.Write(" to exit...")
        Console.ReadLine()
        wcfClient.Close()
      Catch timeProblem As TimeoutException
        Console.WriteLine("The service operation timed out. " & timeProblem.Message)
        wcfClient.Abort()
        Console.Read()
      Catch commProblem As CommunicationException
        Console.WriteLine("There was a communication problem. " & commProblem.Message)
        wcfClient.Abort()
        Console.Read()
      End Try
    End Sub
    Public Shared Sub Main()
      Dim client As New Client()
      client.Run()
    End Sub
  End Class
End Namespace

Remarques

Utilisez la propriété Impersonation (avec une configuration de liaison prenant en charge l’emprunt d’identité) pour activer l’exécution des méthodes spécifiées (dont la valeur de la propriété Impersonation est Allowed ou Required) sous l’identité de l’appelant. Pour plus d’informations, notamment sur la façon dont l’emprunt d’identité est effectué lors de l’utilisation Allowed avec la ServiceAuthorizationBehavior.ImpersonateCallerForAllOperations propriété , consultez Délégation et emprunt d’identité et Guide pratique pour emprunter l’identité d’un client sur un service.

Certains scénarios ne prennent pas en charge l'emprunt d'identité. Pour plus d’informations, consultez Scénarios non pris en charge.

S’applique à