OperationContext.Current is null after first await when using async/await in WCF service

Question

I am using async/await pattern in .NET 4.5 to implement some service methods in WCF. Example service:

Contract:

[ServiceContract(Namespace = \"http:/         


        

Answer 1

It is unfortunate that this doesn't work and we will see about getting a fix out in a future release.

In the mean time, there is a way to reapply the context to the current thread so that you don't have to pass the object around:

    public async Task Add(double n1, double n2)
    {

        OperationContext ctx = OperationContext.Current;

        await Task.Delay(100);

        using (new OperationContextScope(ctx))
        {
            DoSomethingElse();
        }
        return n1 + n2;
    }  

In the above example, the DoSomethingElse() method will have access to OperationContext.Current as expected.