private void AddDefaultResearcher(object sender, RoutedEventArgs e)
{
RColl.AddDefaultResearcher();
}
private void DeleteCommandCanExecute(object sender,
CanExecuteRoutedEventArgs e)
{
e.CanExecute = RColl.Contains(CurrentResearcher);
}
private void DeleteCommandHandler(object sender, ExecutedRoutedEventArgs e)
{
RColl.RemoveResearcher(CurrentResearcher);
CurrentResearcher = new Researcher();
}