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)]
int SomethingHappened(int parameter); // Noncompliant
}
Compliant solution
[ServiceContract]
interface IMyService
{
[OperationContract(IsOneWay = true)]
void SomethingHappened(int parameter);
}
Exceptions
The rule doesn’t report if OperationContractAttribute.AsyncPattern is set to true.
