public void ClearLog(object sender, RoutedEventArgs e)
 {
     try
     {
         if (DataGrid.SelectedItem != null)
         {
             VLogentries log = (VLogentries)DataGrid.SelectedItem;
             _mainViewModel.ClearLog(log.Id);
             _mainViewModel.ReadLogList();
         }
         else
         {
             MessageBox.Show("Bitte wählen Sie eine Zeile aus.", "Auswahl fehlgeschlagen");
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show("Exception occured: " + ex.Message, "Exception occured");
     }
 }