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ServiceBehaviorAttribute.SetWellKnownSingleton Method

Specifies an object that implements the service and that is used as the singleton instance of the service.

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

public void SetWellKnownSingleton(
	Object value


Type: System.Object

The singleton instance of the service.


The value set is null.

This provides the service instance to which all messages addressed to the service will be dispatched.

If SetWellKnownSingleton is set to a non-null value, then the InstanceContextMode must be set to Single or an InvalidOperationException is thrown.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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