ServiceHostBase Class

Extends the ServiceHostBase class to implement hosts that expose custom programming models.

Namespace:  System.ServiceModel
Assembly:  System.ServiceModel (in System.ServiceModel.dll)

Public MustInherit Class ServiceHostBase _
	Inherits CommunicationObject _
	Implements IExtensibleObject(Of ServiceHostBase), IDisposable
Dim instance As ServiceHostBase

Use the ServiceHostBase class to create hosts that provide a custom programming model. The Windows Communication Foundation (WCF) service programming model uses the ServiceHost class.

Special note for Managed C++ users deriving from this class:

  • Put your cleanup code in (On)(Begin)Close (and/or OnAbort), not in a destructor.

  • Avoid destructors; they cause the compiler to auto-generate IDisposable.

  • Avoid non-reference members; they can cause the compiler to auto-generate IDisposable.

  • Avoid finalizers; but if you include one, you should suppress the build warning and call SuppressFinalize(Object) and the finalizer itself from (On)(Begin)Close (and/or OnAbort) to emulate what would have been the auto-generated IDisposable behavior.

This sample uses the ServiceHost class, which is derived from ServiceHostBase.

' Host the service within this EXE console application. 
Public Shared Sub Main()
    ' Create a ServiceHost for the CalculatorService type and use the base address from config. 
    Using svcHost As New ServiceHost(GetType(CalculatorService))
            ' Open the ServiceHost to start listening for messages.

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

            'Close the ServiceHost.

        Catch timeout As TimeoutException
        Catch commException As CommunicationException
        End Try 
    End Using 

End Sub

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0
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