messages-as-interfaces.md

title	summary	component	reviewed	related	redirects
Interfaces as messages	Define interfaces as messages in NServiceBus to support multiple inheritance scenarios	core	2024-04-04	nservicebus/messaging/dynamic-dispatch-and-routing	nservicebus/messages-as-interfaces nservicebus/messaging/interfaces-as-messages

Events can be created on the fly from interfaces without first defining an explicit class implementing the interfaces. This technique can be used to support multiple inheritance for polymorphic routing scenarios. In general, it is recommended to use dedicated, simple types as messages instead.

Sending interface messages

Interface messages can be sent using the following syntax:

snippet: InterfaceSend

Replies are supported via:

snippet: InterfaceReply

Publishing interface messages

Interface messages can be published using the following syntax:

snippet: InterfacePublish

Creating interface messages with IMessageCreator

If an interface message is needed before calling Send or Publish, use IMessageCreator directly to create the message instance:

snippet: IMessageCreatorUsage