// Adds an isbn to the list.
public void addISBN(ISBN isbn)
{
ItemCollection.RegisteredISBNList.Add(isbn);
}
// validates that the ISBN doesn't exist already.
public bool validateISBN(ISBN isbn)
{
if (ItemCollection.RegisteredISBNList.Contains(isbn))
{
return false;
}
else
{
return true;
}
}
// Removes an ISBN from the list.
public void removeISBN(ISBN isbn)
{
ItemCollection.RegisteredISBNList.Remove(isbn);
}
public StudyBook(string name, string author, DateTime printDate, ISBN isbn, Categories cat, string location)
:base(name, author, printDate, isbn, location)
{
this.Category = cat;
}
public Book(string name, string author, DateTime printDate, ISBN isbn, string location) : base(name, author, printDate, isbn, location)
{
this.ISBN = isbn;
}
private void editExistingItem()
{
if (validateMandatoryInputs())
{
int editionNumber;
if (int.TryParse(itemEditionInp.Text, out editionNumber))
{
editedItem.Edition = editionNumber;
}
else
{
throw new InvalidCastException("Edition must be a number only!");
}
string refinedCategory = SelectedCategory.Replace("&", string.Empty);
refinedCategory = refinedCategory.Replace(" ", string.Empty);
editedItem.Name = nameField.Text;
if (serialNumInp.Text != editedItem.ISBN.Number)
{
ISBN newisbn = new ISBN(serialNumInp.Text);
if (data.validateISBN(newisbn))
{
data.removeISBN(editedItem.ISBN);
editedItem.ISBN = newisbn;
data.addISBN(newisbn);
}
else
{
throw new InvalidSerialNumberException("This ISBN is already registered to another item! Try something else!");
}
}
editedItem.Location = locBox.Text;
editedItem.PrintDate = (DateTime)dateFromPicker.SelectedDate;
editedItem.Author = authorInp.Text;
if (editedItem.GetType().IsSubclassOf(typeof(Book)))
{
if (editedItem is RegularBook)
{
RegularBook book = editedItem as RegularBook;
book.Category = (RegularBook.Categories)Enum.Parse(typeof(RegularBook.Categories), refinedCategory);
}
else if (editedItem is ChildrenBook)
{
ChildrenBook book = editedItem as ChildrenBook;
book.Category = (ChildrenBook.Categories)Enum.Parse(typeof(ChildrenBook.Categories), refinedCategory);
}
else if (editedItem is StudyBook)
{
StudyBook book = editedItem as StudyBook;
book.Category = (StudyBook.Categories)Enum.Parse(typeof(StudyBook.Categories), refinedCategory);
}
((Book)editedItem).IsBestseller = IsBestseller;
}
else if (editedItem.GetType().IsSubclassOf(typeof(Journal)))
{
if (editedItem is RegularJournal)
{
RegularJournal journal = editedItem as RegularJournal;
journal.Category = (RegularJournal.Categories)Enum.Parse(typeof(RegularJournal.Categories), refinedCategory);
}
else if (editedItem is ScienceJournal)
{
ScienceJournal journal = editedItem as ScienceJournal;
journal.Category = (ScienceJournal.Categories)Enum.Parse(typeof(ScienceJournal.Categories), refinedCategory);
}
((Journal)editedItem).Subject = Subject;
}
editActionCompleted(this, null);
}
}