public Book(string _author, string _title, string _publisher, int _year, double _price, string _cultureName, string _ISBN)
{
Author = _author;
Title = _title;
Publisher = _publisher;
Year = new YearFormat(_year);
Price = new PriceFormat(_price, new CultureInfo(_cultureName));
ISBN = new ISBNFormat(_ISBN);
logger.Debug($"Created new book: {this}.");
}
public Book(string _author, string _title, string _publisher, YearFormat _year, PriceFormat _price, ISBNFormat _ISBN)
{
Author = _author;
Title = _title;
Publisher = _publisher;
Year = _year;
Price = _price;
ISBN = _ISBN;
logger.Debug($"Created new book: {this}.");
}
// check strings for null/spaces is unnecessary, because ibook can be untitled/unauthorized
// this function checks price, year, culture and isbn
// returns 0, if input is correct, otherwise returns number of invalid parameter
public static int IsInputCorrect(string _year, string _price, string _culture, string _ISBN)
{
// check year
int year = 0;
try
{
year = int.Parse(_year);
}
catch
{
return(1);
}
// check price
double price = 0;
try
{
price = double.Parse(_price);
}
catch
{
return(2);
}
// check culture
CultureInfo culture = null;
try
{
culture = new CultureInfo(_culture);
}
catch
{
return(3);
}
if (!ISBNFormat.IsISBNValid(_ISBN))
{
return(4);
}
return(0);
}
private void btnSaveChanges_Click(object sender, RoutedEventArgs e)
{
try
{
int err = MainWindow.IsInputCorrect(txtYear.Text, txtPrice.Text, cmbbxCulture.SelectedItem.ToString(), txtISBN.Text);
switch (err)
{
case 1:
throw new Exception("Invalid year value!");
case 2:
throw new Exception("Invalid price value!");
case 3:
throw new Exception("Invalid culture value!");
case 4:
throw new Exception("Invalid ISBN value!");
}
NewAuthor = txtAuthor.Text;
NewTitle = txtTitle.Text;
NewPublisher = txtPublisher.Text;
NewYear = new YearFormat(int.Parse(txtYear.Text));
NewPrice = new PriceFormat(double.Parse(txtPrice.Text), new CultureInfo(cmbbxCulture.SelectedItem.ToString()));
NewISBN = new ISBNFormat(txtISBN.Text);
Book newBook = new Book(NewAuthor, NewTitle, NewPublisher, NewYear, NewPrice, NewISBN);
// check if this book already exists
if ((booksList.IndexOf(newBook) != -1) && (booksList.IndexOf(newBook) != oldIndex))
{
throw new Exception("Such book already exists!");
}
DialogResult = true;
Close();
}
catch (Exception ex)
{
MessageBox.Show(ex.Message);
}
}
public static int CompareByISBN(Book bookA, Book bookB)
{
return(ISBNFormat.Compare(bookA.ISBN, bookB.ISBN));
}
