public View4VM()
{
addCommand = new RelayCommand(AddExecute, param => AddCanExecute);
deleteCommand = new RelayCommand(DeleteExecute, param => DeleteCanExecute);
undoCommand = new RelayCommand(UndoExecute, param => UndoCanExecute);
redoCommand = new RelayCommand(RedoExecute, param => RedoCanExecute);
}
public View1VM()
{
fireEventCommand = new RelayCommand(FireEventExecute);
}