' This method handles PropertyError events that occur while 
' saving the configuration of an object.
Public Sub OnSavePropertyError(ByVal saver As Mpx.ConfigSaver, 
ByVal e As Mpx.ConfigSavePropertyErrorEventArgs)
    Dim mpxExc As Mpx.Exception = e.InnerException
    If Not (mpxExc Is Nothing) Then
        ' Print the error information from the underlying
        ' exception that caused the error.
        msg = mpxExc.Error
        msg += ": "
        msg += mpxExc.Message
        System.Console.WriteLine(msg)
    End If
End Sub

public void OnSavePropertyError(Mpx.ConfigSaver saver,
     Mpx.ConfigSavePropertyErrorEventArgs e)
{
     Mpx.Exception mpxExc = e.InternalException;
     if (mpxExc != null)
     {
         // Print the error information from the underlying
         // exception that caused the error.
         msg = mpxExc.Error
               + ": "
               + mpxExc.Message
               + "\n";
         System.Console.Write(msg);
     }
}