public void Handle(ExportImportEvent message)
 {
     IsInExportImport    = message.IsInProgress;
     ExportImportMessage = message.Message;
     NotifyOfPropertyChange(() => IsInExportImport);
     NotifyOfPropertyChange(() => ExportImportMessage);
 }
 public virtual void Handle(ExportImportEvent message)
 {
     Refresh();
 }