private void OnAddCategoryInListCommandExecute()
{
if (SelectCategory is null)
{
return;
}
if (CategoryClassesList is null)
{
CategoryClassesList = new ObservableCollection <CategoryClass>();
}
CategoryClassesList.Add(SelectCategory);
}
private void OnRemoveEntryCommandExecute()
{
BookClass bookClass = Books.FirstOrDefault(h => h.DateBook == Data);
if (bookClass is null)
{
return;
}
bookManager.Delete(bookClass);
bookManager.Save();
Headline = null;
Content = null;
CategoryClassesList.Clear();
Data = new DateTime();
Books.Clear();
Books = new ObservableCollection <BookClass>(bookManager.GetAll());
Books = new ObservableCollection <BookClass>(Books.OrderBy(x => x.DateBook));
}
