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.NET Framework 4.5

.NET Framework Class Library

System.ServiceModel Namespaces

System.ServiceModel

ActionNotSupportedException Class

AddressAccessDeniedException Class

AddressAlreadyInUseException Class

AddressFilterMode Enumeration

AuditLevel Enumeration

AuditLogLocation Enumeration

BasicHttpBinding Class

BasicHttpContextBinding Class

BasicHttpMessageCredentialType Enumeration

BasicHttpMessageSecurity Class

BasicHttpsBinding Class

BasicHttpSecurity Class

BasicHttpSecurityMode Enumeration

BasicHttpsSecurity Class

BasicHttpsSecurityMode Enumeration

CacheSetting Enumeration

CallbackBehaviorAttribute Class

ChannelFactory Class

ChannelFactory(TChannel) Class

ChannelTerminatedException Class

ClientBase(TChannel) Class

ClientBase(TChannel).BeginOperationDelegate Delegate

ClientBase(TChannel).ChannelBase(T) Class

ClientBase(TChannel).EndOperationDelegate Delegate

ClientBase(TChannel).InvokeAsyncCompletedEventArgs Class

ClientCredentialsSecurityTokenManager Class

CommunicationException Class

CommunicationObjectAbortedException Class

CommunicationObjectFaultedException Class

CommunicationState Enumeration

ConcurrencyMode Enumeration

CorrelationActionMessageFilter Class

CorrelationQuery Class

DataContractFormatAttribute Class

DeadLetterQueue Enumeration

DeliveryRequirementsAttribute Class

DnsEndpointIdentity Class

DuplexChannelFactory(TChannel) Class

DuplexClientBase(TChannel) Class

EndpointAddress Class

EndpointAddress10 Class

EndpointAddressAugust2004 Class

EndpointAddressBuilder Class

EndpointIdentity Class

EndpointIdentityExtension Class

EndpointNotFoundException Class

EnvelopeVersion Class

ExceptionDetail Class

ExceptionMapper Class

ExtensionCollection(T) Class

FaultCode Class

FaultContractAttribute Class

FaultException Class

FaultException(TDetail) Class

FaultImportOptions Class

FaultReason Class

FaultReasonText Class

FederatedMessageSecurityOverHttp Class

HostNameComparisonMode Enumeration

HttpBindingBase Class

HttpClientCredentialType Enumeration

HttpProxyCredentialType Enumeration

HttpTransportSecurity Class

IClientChannel Interface

ICommunicationObject Interface

IContextChannel Interface

IDefaultCommunicationTimeouts Interface

IDuplexContextChannel Interface

IExtensibleObject(T) Interface

IExtension(T) Interface

IExtensionCollection(T) Interface

ImpersonationOption Enumeration

InstanceContext Class

InstanceContextMode Enumeration

InvalidMessageContractException Class

IOnlineStatus Interface

IServiceChannel Interface

MessageBodyMemberAttribute Class

MessageContractAttribute Class

MessageContractMemberAttribute Class

MessageCredentialType Enumeration

MessageHeader(T) Class

MessageHeaderArrayAttribute Class

MessageHeaderAttribute Class

MessageHeaderException Class

MessageParameterAttribute Class

MessagePropertyAttribute Class

MessageQuerySet Class

MessageSecurityOverHttp Class

MessageSecurityOverMsmq Class

MessageSecurityOverTcp Class

MessageSecurityVersion Class

MsmqAuthenticationMode Enumeration

MsmqBindingBase Class

MsmqEncryptionAlgorithm Enumeration

MsmqException Class

MsmqPoisonMessageException Class

MsmqSecureHashAlgorithm Enumeration

MsmqTransportSecurity Class

NamedPipeTransportSecurity Class

NetHttpBinding Class

NetHttpMessageEncoding Enumeration

NetHttpsBinding Class

NetMsmqBinding Class

NetMsmqSecurity Class

NetMsmqSecurityMode Enumeration

NetNamedPipeBinding Class

NetNamedPipeSecurity Class

NetNamedPipeSecurityMode Enumeration

NetPeerTcpBinding Class

NetTcpBinding Class

NetTcpContextBinding Class

NetTcpSecurity Class

NonDualMessageSecurityOverHttp Class

OperationBehaviorAttribute Class

OperationContext Class

OperationContextScope Class

OperationContractAttribute Class

OperationFormatStyle Enumeration

OperationFormatUse Enumeration

OptionalReliableSession Class

PeerHopCountAttribute Class

PeerMessageOrigination Enumeration

PeerMessagePropagation Enumeration

PeerMessagePropagationFilter Class

PeerNodeAddress Class

PeerResolver Class

PeerSecuritySettings Class

PeerTransportCredentialType Enumeration

PeerTransportSecuritySettings Class

PoisonMessageException Class

ProtocolException Class

QueuedDeliveryRequirementsMode Enumeration

QueueTransferProtocol Enumeration

QuotaExceededException Class

ReceiveContextEnabledAttribute Class

ReceiveErrorHandling Enumeration

ReleaseInstanceMode Enumeration

ReliableMessagingVersion Class

ReliableSession Class

RsaEndpointIdentity Class

SecurityMode Enumeration

ServerTooBusyException Class

ServiceActivationException Class

ServiceAuthenticationManager Class

ServiceAuthorizationManager Class

ServiceBehaviorAttribute Class

ServiceConfiguration Class

ServiceContractAttribute Class

ServiceHost Class

ServiceHostBase Class

ServiceHostingEnvironment Class

ServiceKnownTypeAttribute Class

ServiceSecurityContext Class

SessionMode Enumeration

SpnEndpointIdentity Class

TcpClientCredentialType Enumeration

TcpTransportSecurity Class

TransactionFlowAttribute Class

TransactionFlowOption Enumeration

TransactionProtocol Class

TransferMode Enumeration

UdpBinding Class

UnknownMessageReceivedEventArgs Class

UpnEndpointIdentity Class

UriSchemeKeyedCollection Class

WebHttpBinding Class

WebHttpSecurity Class

WebHttpSecurityMode Enumeration

WorkflowServiceHost Class

WS2007FederationHttpBinding Class

WS2007HttpBinding Class

WSDualHttpBinding Class

WSDualHttpSecurity Class

WSDualHttpSecurityMode Enumeration

WSFederationHttpBinding Class

WSFederationHttpSecurity Class

WSFederationHttpSecurityMode Enumeration

WSHttpBinding Class

WSHttpBindingBase Class

WSHttpContextBinding Class

WSHttpSecurity Class

WSMessageEncoding Enumeration

X509CertificateEndpointIdentity Class

XmlSerializerFormatAttribute Class

XPathMessageQuery Class

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ImpersonationOption Enumeration

.NET Framework 4.5

Specifies the impersonation behavior for a service operation on a service instance.

Namespace: System.ServiceModel
Assembly: System.ServiceModel (in System.ServiceModel.dll)

public enum ImpersonationOption

	Member name	Description
	NotAllowed	Impersonation is not performed. If ImpersonateCallerForAllOperations is equal to true, a validation exception occurs at service startup time.
	Allowed	Impersonation is performed if credentials are available and ImpersonateCallerForAllOperations is equal to true.
	Required	Impersonation is required.

Use the ImpersonationOption enumeration to control impersonation in Windows Communication Foundation (WCF) applications.

This setting interacts with a configuration property on ImpersonateCallerForAllOperations in the following table.

The following code example on the service shows how to have a method impersonate the caller by using the OperationBehaviorAttribute to set the impersonation level.

		[OperationBehavior(Impersonation = ImpersonationOption.Required)]
        public double Add(double n1, double n2)
        {
            double result = n1 + n2;
            Console.WriteLine("Received Add({0},{1})", n1, n2);
            Console.WriteLine("Return: {0}", result);
			DisplayIdentityInformation();
			return result;
        }

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Reference

System.ServiceModel Namespace

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