Test

HelloInterface

Imports System
Imports System.Collections
Imports System.Collections.Generic
Imports System.Runtime.Serialization
Imports ServiceStack
Imports ServiceStack.DataAnnotations
Imports Test.ServiceModel

Namespace Global

    Namespace Test.ServiceModel

        Public Partial Class EmptyClass
        End Class

        Public Partial Class HelloInterface
            Public Overridable Property Poco As IPoco
            Public Overridable Property EmptyInterface As IEmptyInterface
            Public Overridable Property EmptyClass As EmptyClass
        End Class

        Public Interface IEmptyInterface
        End Interface

        Public Interface IPoco
            Property Name As String
        End Interface
    End Namespace
End Namespace

VB.NET HelloInterface DTOs

To override the Content-type in your clients, use the HTTP Accept Header, append the .xml suffix or ?format=xml

HTTP + XML

The following are sample HTTP requests and responses. The placeholders shown need to be replaced with actual values.

POST /xml/oneway/HelloInterface HTTP/1.1 
Host: test.servicestack.net 
Accept: application/xml
Content-Type: application/xml
Content-Length: length

<HelloInterface xmlns:i="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://schemas.datacontract.org/2004/07/Test.ServiceModel">
  <EmptyClass />
  <EmptyInterface i:nil="true" />
  <Poco i:nil="true" />
</HelloInterface>