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DuplexClientBase<TChannel> Constructor (InstanceContext, String)

Initializes a new instance of the DuplexClientBase<TChannel> class using the specified callback object and configuration name.

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

protected DuplexClientBase(
	InstanceContext callbackInstance,
	string endpointConfigurationName


Type: System.ServiceModel.InstanceContext
An object used to create the instance context that associates the callback object with the channel to the service.
Type: System.String
The name of the client endpoint information in the application configuration file.


The callback instance is null.


The configuration name is null.

The callbackInstance provided by the user is used to service all callback operations.

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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