Public Class TabViewModel
   Inherits ViewModelBase

   Friend m_sTabName As String
   Public Overridable Property sTabName As String
      Get
         Return m_sTabName
      End Get
      Set(value As String)
         If value <> m_sTabName Then
            m_sTabName = value
            OnPropertyChanged("sTabName")
         End If
      End Set
   End Property

End Class