private void Run()
{
    WSHttpBinding b = new WSHttpBinding(SecurityMode.Message);
    Uri baseAddress = new Uri("http://localhost:1066/calculator");
    ServiceHost sh = new ServiceHost(typeof(Calculator), baseAddress);
    sh.AddServiceEndpoint(typeof(ICalculator), b, "");

    // Find the ContractDescription of the operation to find.
    ContractDescription cd = sh.Description.Endpoints[0].Contract;
    OperationDescription myOperationDescription = cd.Operations.Find("Add");

    // Find the serializer behavior.
    XmlSerializerOperationBehavior  serializerBehavior =
        myOperationDescription.Behaviors.
           Find<XmlSerializerOperationBehavior>();

    // If the serializer is not found, create one and add it.
    if (serializerBehavior == null)
    {
        serializerBehavior = new XmlSerializerOperationBehavior(myOperationDescription);
        myOperationDescription.Behaviors.Add(serializerBehavior);
    }
    
    // Change style of the serialize attribute.
    serializerBehavior.XmlSerializerFormatAttribute.Style = OperationFormatStyle.Document;
                
    sh.Open();
    Console.WriteLine("Listening");
    Console.ReadLine();
    sh.Close();
}