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ImpersonationOption Enum

Definition

Namespace:
System.ServiceModel
Assembly:
System.ServiceModel.dll
Source:
ImpersonationOption.cs
Source:
ImpersonationOption.cs
Source:
ImpersonationOption.cs

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

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

public enum class ImpersonationOption
public enum ImpersonationOption
type ImpersonationOption = 
Public Enum ImpersonationOption
Inheritance
ImpersonationOption

Fields

Name Value Description
NotAllowed 0

Impersonation is not performed. If ImpersonateCallerForAllOperations is equal to true, a validation exception occurs at service startup time.

Allowed 1

Impersonation is performed if credentials are available and ImpersonateCallerForAllOperations is equal to true.

Required 2

Impersonation is required.

Examples

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;
}
<OperationBehavior(Impersonation := ImpersonationOption.Required)> _
Public Function Add(ByVal n1 As Double, ByVal n2 As Double) As Double Implements ICalculator.Add
 Dim result = n1 + n2
 Console.WriteLine("Received Add({0},{1})", n1, n2)
 Console.WriteLine("Return: {0}", result)
 DisplayIdentityInformation()
 Return result
End Function

Remarks

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.

Applies to


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