private async void AddNewBook_Click(object sender, RoutedEventArgs e)
{
int bookCopies = 0;
if (IsNewBookParametwersOk(ref bookCopies))
{
if (IsNamingConventionOk())
{
if (MainPage.ClassManager.IsBookUnique(GetNewBookData(bookCopies)))
{
await InfoMessage.BookSuccessfullyAddedAsync();
}
else
{
await InfoMessage.BookAlreadyInTheCategoryAsync();
}
ResetTextBoxAndComboBox();
}
else
{
await InfoMessage.NamingErrorAsync();
}
}
else
{
await InfoMessage.EmptyFieldErrorAsync();
}
}