public void SaveChanges()
{
TimerSheetViewModel tsvm = new TimerSheetViewModel(Countdown.Hours, Countdown.Minutes, Countdown.Seconds, Countdown.Description);
timer.Tick += tsvm.Tick;
tsvm.DoRemoveButton = RemoveButton;
TimerSheets.Add(tsvm);
}
private void RemoveButton(TimerSheetViewModel viewModel)
{
timerSheets.Remove(viewModel);
}
