System.ServiceModel Namespa ...


.NET Framework Class Library
ServiceHostBase Class

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

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

Visual Basic (Declaration)
Public MustInherit Class ServiceHostBase _
    Inherits CommunicationObject _
    Implements IExtensibleObject(Of ServiceHostBase), IDisposable
Visual Basic (Usage)
Dim instance As ServiceHostBase
C#
public abstract class ServiceHostBase : CommunicationObject, 
    IExtensibleObject<ServiceHostBase>, IDisposable
Visual C++
public ref class ServiceHostBase abstract : public CommunicationObject, 
    IExtensibleObject<ServiceHostBase^>, IDisposable
JScript
public abstract class ServiceHostBase extends CommunicationObject implements IExtensibleObject<ServiceHostBase>, IDisposable
Remarks

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.

Examples

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

Visual Basic
' 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))
        Try
            ' Open the ServiceHost to start listening for messages.
            svcHost.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.
            svcHost.Close()

        Catch timeout As TimeoutException
            Console.WriteLine(timeout.Message)
            Console.ReadLine()
        Catch commException As CommunicationException
            Console.WriteLine(commException.Message)
            Console.ReadLine()
        End Try
    End Using

End Sub

C#
    // Host the service within this EXE console application.
    public static void Main()
    {
      // Create a ServiceHost for the CalculatorService type and use
      // the base address from config.
      ServiceHost hostDefault = new 
       ServiceHost(typeof(CalculatorService));

      TimeSpan closeTimeout = hostDefault.CloseTimeout;

      TimeSpan openTimeout = hostDefault.OpenTimeout;


      ServiceAuthorizationBehavior authorization =
          hostDefault.Authorization;

      ServiceCredentials credentials =
                      hostDefault.Credentials;

      ServiceDescription description = 
              hostDefault.Description;


      int manualFlowControlLimit = 
              hostDefault.ManualFlowControlLimit;


      NetTcpBinding portsharingBinding = new NetTcpBinding();
      hostDefault.AddServiceEndpoint(
    typeof( CalculatorService ),
    portsharingBinding,
    "net.tcp://localhost/MyService" );


      int newLimit = hostDefault.IncrementManualFlowControlLimit(100);

      using (ServiceHost serviceHost = new ServiceHost(typeof(CalculatorService)))
      {
        try
        {
          // Open the ServiceHost to 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.ReadLine();

          // Close the ServiceHost.
          serviceHost.Close();
        }
        catch (TimeoutException timeProblem)
        {
          Console.WriteLine(timeProblem.Message);
          Console.ReadLine();
        }
        catch (CommunicationException commProblem)
        {
          Console.WriteLine(commProblem.Message);
          Console.ReadLine();
        }
      }
    }
Inheritance Hierarchy

System..::.Object
  System.ServiceModel.Channels..::.CommunicationObject
    System.ServiceModel..::.ServiceHostBase
      System.ServiceModel..::.ServiceHost
      System.ServiceModel..::.WorkflowServiceHost
Thread Safety

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

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.
Version Information

.NET Framework

Supported in: 3.5, 3.0
See Also

Reference

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Community Content

erikj
The code example is not much use
ServiceBaseHost exists so developers can create alternative hosting classes, but the example doesn't relate to that. The sample code is just a regular ServiceHost. Also, there are no links to other material that describes how to use this class.
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