Multi web services so multi singleton

well hello everybody

i have one project with multiples web services so i created various singleton class thinking in performance. now i think create one singleton class and that have the instances of my webservices

example

public static WebServiceMaster
{
  internal ServiceX WebX;
  internal ServiceY WebY;
  ......
  public static WEbServiceMaster GetInstance()
  .....  
}

what think about that? is that bad?

Well, finally that is done. I know that is not perfect

 Public NotInheritable Class ServiceProxySingleton

Private _services As IDictionary(Of ProxyServicesEnum, IServiceDispatcher) = New Dictionary(Of ProxyServicesEnum, IServiceDispatcher)
Private _dbRepository As IDACommon

Private Sub New()
  _dbRepository = New DACommon()
  LoadServices()
End Sub

Private Sub LoadServices()
  _services.Add(ProxyServicesEnum.eActivity, New ActivityServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eAvailability, New AvailabilityServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eBrochure, New BrochureServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eInformation, New InformationServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eMeetingRoom, New MeetingRoomServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eMembership, New MembershipServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eName, New NameServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eReservation, New ReservationServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eResvAdvanced, New ResvAdvancedServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eSecurity, New SecurityServiceImp(_dbRepository))
  _services.Add(ProxyServicesEnum.eStayHistory, New StayHistoryServic开发者_C百科eImp(_dbRepository))
  _services.Add(ProxyServicesEnum.ePostXml, New PostXmlServiceImp(_dbRepository, ConfigurationServiceSingleton.GetInstance.GetPostXmlConfig))
  _services.Add(ProxyServicesEnum.eOxiHttp, New OxiServiceImp(_dbRepository))
End Sub

Public ReadOnly Property Service(ByVal serviceEnum As ProxyServicesEnum) As Object
  Get
    If _services.ContainsKey(serviceEnum) Then
      Return _services.Item(serviceEnum)
    End If
    Return Nothing
  End Get
End Property

Public ReadOnly Property GetMeta(ByVal serviceEnum As ProxyServicesEnum) As IDictionary(Of String, MethodIdentityAttribute)
  Get
    If _services.ContainsKey(serviceEnum) Then
      Return _services.Item(serviceEnum).MetaInfo
    End If
    Return Nothing
  End Get
End Property

Public Shared Function GetInstance() As ServiceProxySingleton
  Return NestedPrWireService._instance
End Function

Class NestedPrWireService
  Friend Shared ReadOnly _instance As ServiceProxySingleton = New ServiceProxySingleton()
  Shared Sub New()
  End Sub
End Class

End Class

comments and criticisms are welcome

Very good approach is to use Dependency Injection. For example Unity.