Why is this an issue?
When declaring a Windows Communication Foundation (WCF) OperationContract method one-way, that service method won’t return any result,
not even an underlying empty confirmation message. These are fire-and-forget methods that are useful in event-like communication. Specifying a return
type therefore does not make sense.
Noncompliant code example
<ServiceContract>
Interface IMyService
<OperationContract(IsOneWay:=True)>
Function SomethingHappened(ByVal parameter As Integer) As Integer ' Noncompliant
End Interface
Compliant solution
<ServiceContract>
Interface IMyService
<OperationContract(IsOneWay:=True)>
Sub SomethingHappened(ByVal parameter As Integer)
End Interface
Exceptions
The rule doesn’t report if OperationContractAttribute.AsyncPattern is set to true.
