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Editorial Team
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Asked: 2026-05-16T01:33:16+00:00

Okay, I’ll try to make this as straight forward as possible. I’m using VB.Net

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Okay, I’ll try to make this as straight forward as possible. I’m using VB.Net in VS2010, I’m attempting to self-host a WCF service. (It’s actually in a windows service, but I’m trying to do this via a simple console app. Below is the code in question, the TCP/IP addresses are injected directly here. The WCF service itself is simply a renamed DEFAULT new WCF service project.

Dim host As New ServiceHost(GetType(TestService))

Dim tcpb As New NetTcpBinding()
tcpb.PortSharingEnabled = True
host.AddServiceEndpoint( _
    GetType(ITestService), _
    tcpb, _
    "net.tcp://localhost:62020/TestWcfService/" _
)

host.Open()

Console.ReadKey(True)

host.Close()

I don’t think I can make this much simpler.. is there something special I need to do to get the port to actually bind? when I run netstat -a it doesn’t show a listening port on 62020 I am really at my whits end on this.

Background: I have another WCF service I’m trying to migrate out of IIS, and into a separate server running in a Windows Service. The WCF service will only be accessed internally. I’ve been having numerous issues in getting that migrated, so trying to get a simple service to bind, and have a client (website) access it. The other WCF is binding (different port) fine, but having communications errors. There is a literal ****-ton of stuff out there, and very little really fits my needs, and I’m having a lot of trouble getting anything working with it.

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1 Answer

  1. Editorial Team

    I just had the exact same problem when testing a new service. Turns out I had simply forgot to mark the service interface with the [ServiceContract] attribute. I guess WCF didn’t bother with creating an endpoint since no service contracts were found.

    Would have been nice with an error message since I can’t imagine anyone wanting to open a ServiceHost without at least one contract being implemented, but I suspect this only happens when you are using simplified configuration in .NET 4.

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