private void btnSaveNewBook_Click(object sender, EventArgs e)
{
if (IsValidData())
{
book = new CBook(txtISBN.Text, txtAuthor.Text, txtTitle.Text, Convert.ToDouble(txtPrice.Text));
this.Close();
}
}
private void btnAdd_Click(object sender, EventArgs e)
{
frmNewBook addNewBook = new frmNewBook();
CBook book = addNewBook.GetNewBook();
if (book != null)
{
books.Add(book);
BookDB.AddNewBook(books);
FillBookListBox();
}
}
private void btnDelete_Click(object sender, EventArgs e)
{
int i = lstBook.SelectedIndex;
if (i != -1)
{
CBook book = (CBook)books[i];
string message = "Are you sure you want to delete "
+ book._Title + "?";
DialogResult button =
MessageBox.Show(message, "Confirm Delete",
MessageBoxButtons.YesNo);
if (button == DialogResult.Yes)
{
books.Remove(book);
BookDB.AddNewBook(books);
FillBookListBox();
}
}
}
public static List <CBook> GetBooks()
{
// create the list
List <CBook> books = new List <CBook>();
// create the xmlReaderSettings object
XmlReaderSettings settings = new XmlReaderSettings();
settings.IgnoreWhitespace = true;
settings.IgnoreComments = true;
// create the XmlReader object
XmlReader xmlIn = XmlReader.Create(Path, settings);
// read past all nodes to the first Student node
if (xmlIn.ReadToDescendant("Book"))
{
// create one Student object for each Student node
do
{
CBook book = new CBook();
xmlIn.ReadStartElement("Book");
book._ISBN =
xmlIn.ReadElementContentAsString();
book._Author =
xmlIn.ReadElementContentAsString();
book._Title =
xmlIn.ReadElementContentAsString();
book._Price =
xmlIn.ReadElementContentAsDouble();
books.Add(book);
}while (xmlIn.ReadToNextSibling("Book"));
}
// close the XmlReader object
xmlIn.Close();
return(books);
}