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IOperationBehavior.ApplyDispatchBehavior Method

Implements a modification or extension of the service across an operation.

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

void ApplyDispatchBehavior(
	OperationDescription operationDescription,
	DispatchOperation dispatchOperation
)

Parameters

operationDescription
Type: System.ServiceModel.Description.OperationDescription

The operation being examined. Use for examination only. If the operation description is modified, the results are undefined.

dispatchOperation
Type: System.ServiceModel.Dispatcher.DispatchOperation

The run-time object that exposes customization properties for the operation described by operationDescription.

Implement the ApplyDispatchBehavior method to view, modify, or extend the service runtime across all messages or for a specific operation. For details about what customizations you can do in a service application, see System.ServiceModel.Dispatcher.DispatchRuntime and System.ServiceModel.Dispatcher.DispatchOperation.

It is recommended that the ApplyDispatchBehavior method throw a NotImplementedException exception if the behavior is only intended for use in a client application.

The following code example shows an implementation of System.ServiceModel.Dispatcher.IParameterInspector that writes to the console when the inspector is invoked on an operation. This customization can only be attached to the System.ServiceModel.Dispatcher.DispatchOperation or System.ServiceModel.Dispatcher.ClientOperation and is therefore usually inserted by an operation behavior.

#region IParameterInspector Members
public void AfterCall(string operationName, object[] outputs, object returnValue, object correlationState)
{
  Console.WriteLine(
    "IParameterInspector.AfterCall called for {0} with return value {1}.", 
    operationName, 
    returnValue.ToString()
  );
}

public object BeforeCall(string operationName, object[] inputs)
{
  Console.WriteLine("IParameterInspector.BeforeCall called for {0}.", operationName);
  return null;
}

The following code example shows how the operation behavior attaches the parameter inspector to the runtime.

#region IOperationBehavior Members
public void AddBindingParameters(
  OperationDescription operationDescription, BindingParameterCollection bindingParameters
)
{ return; }

public void ApplyClientBehavior(OperationDescription operationDescription, ClientOperation clientOperation)
{
  clientOperation.ParameterInspectors.Add(new Inspector());
}

public void ApplyDispatchBehavior(OperationDescription operationDescription, DispatchOperation dispatchOperation)
{
  dispatchOperation.ParameterInspectors.Add(new Inspector());
}

public void Validate(OperationDescription operationDescription){ return; }

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

.NET for Windows Store apps

Supported in: Windows 8

Windows 8.1, Windows Server 2012 R2, 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.

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