<ServiceContract(Namespace:="http://UE.ServiceModel.Samples")> _
   Public Interface ICalculator

       <OperationContract()> _
       Function Add(ByVal n1 As Double, ByVal n2 As Double) As Double
       <OperationContract()> _
       Function Subtract(ByVal n1 As Double, ByVal n2 As Double) As Double
       <OperationContract()> _
       Function Multiply(ByVal n1 As Double, ByVal n2 As Double) As Double
       <OperationContract()> _
       Function Divide(ByVal n1 As Double, ByVal n2 As Double) As Double
   End Interface

   ' Service class which implements the service contract.
   ' Added code to write output to the console window
   Public Class CalculatorService
       Implements ICalculator

       Public Function Add(ByVal n1 As Double, ByVal n2 As Double) As Double _
Implements ICalculator.Add

           Dim result As Double = n1 + n2
           Console.WriteLine("Received Add({0},{1})", n1, n2)
           Console.WriteLine("Return: {0}", result)
           Return result
       End Function

       Public Function Subtract(ByVal n1 As Double, ByVal n2 As Double) As Double _
Implements ICalculator.Subtract

           Dim result As Double = n1 - n2
           Console.WriteLine("Received Subtract({0},{1})", n1, n2)
           Console.WriteLine("Return: {0}", result)
           Return result
       End Function

       Public Function Multiply(ByVal n1 As Double, ByVal n2 As Double) As Double _
Implements ICalculator.Multiply

           Dim result As Double = n1 * n2
           Console.WriteLine("Received Multiply({0},{1})", n1, n2)
           Console.WriteLine("Return: {0}", result)
           Return result
       End Function

       Public Function Divide(ByVal n1 As Double, ByVal n2 As Double) As Double _
Implements ICalculator.Divide

           Dim result As Double = n1 / n2
           Console.WriteLine("Received Divide({0},{1})", n1, n2)
           Console.WriteLine("Return: {0}", result)
           Return result
       End Function

       Public Shared Sub Main()
           Dim binding As BasicHttpBinding = New BasicHttpBinding()
           binding.Name = "binding1"
           binding.HostNameComparisonMode = HostNameComparisonMode.StrongWildcard
           binding.Security.Mode = BasicHttpSecurityMode.None

           Dim baseAddress As Uri = New Uri("http://localhost:8000/servicemodelsamples/service")
           Dim address As Uri = New Uri("http://localhost:8000/servicemodelsamples/service/calc")

           ' Create a ServiceHost for the CalculatorService type and provide the base address.
           Using serviceHost As ServiceHost = New ServiceHost(GetType(CalculatorService), baseAddress)

               serviceHost.AddServiceEndpoint(GetType(ICalculator), binding, address)

               ' Open the ServiceHost to create listeners and start listening for messages.
               serviceHost.Open()

               ' The service can now be accessed.
               Console.WriteLine("The service is ready.")
               Console.WriteLine("Press <ENTER> to terminate service.")
               Console.WriteLine()
               Console.ReadLine()

               ' Close the ServiceHost to shutdown the service.
               serviceHost.Close()
           End Using
       End Sub
   End Class