IReceiveMessageCallback Interface
.NET Framework (current version)
Implements a callback to be executed when a service message is received by the Receive and T:System.ServiceModel.Activities.ReceiveParameters activities.
Assembly: System.ServiceModel.Activities (in System.ServiceModel.Activities.dll)
| Name | Description | |
|---|---|---|
![]() | OnReceiveMessage(OperationContext^, ExecutionProperties^) | Executed when a service message is received. |
The following example shows how to implement the IReceiveMessageCallback interface to access a message header when a message is received.
class ReceiveInstanceIdCallback : IReceiveMessageCallback { public const string HeaderName = "InstanceIdHeader"; public const string HeaderNS = "http://Microsoft.Samples.AccessingOperationContext"; public void OnReceiveMessage(System.ServiceModel.OperationContext operationContext, System.Activities.ExecutionProperties activityExecutionProperties) { try { Guid instanceId = operationContext.IncomingMessageHeaders.GetHeader<Guid>(HeaderName, HeaderNS); Console.WriteLine("Received a message from a workflow with instanceId = {0}", instanceId); } catch (MessageHeaderException) { Console.WriteLine("This message must not be from a workflow."); } } }
.NET Framework
Available since 4.0
Available since 4.0
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