private void Window_Loaded(object sender, RoutedEventArgs e)
{
if (MyStorage.ReadXML <ObservableCollection <Book> >("books.xml") == null)
{
books = new ObservableCollection <Book>();
}
else
{
books = MyStorage.ReadXML <ObservableCollection <Book> >("books.xml");
}
if (MyStorage.ReadXML <ObservableCollection <Friend> >("friends.xml") == null)
{
friends = new ObservableCollection <Friend>();
}
else
{
friends = MyStorage.ReadXML <ObservableCollection <Friend> >("friends.xml");
}
LBx_book.ItemsSource = books;
LBx_friend.ItemsSource = friends;
TBk_bookCount.DataContext = this;
foreach (Book element in books)
{
if (element.isAvailable == "Yes")
{
availableCount++;
}
}
}
private void Btn_save_friend_Click(object sender, RoutedEventArgs e)
{
if (friend.phone == null)
{
MessageBox.Show("Please enter phone number.");
return;
}
Friend fList = (from f in MainWindow.friends where f.phone.Contains(friend.phone) select f).FirstOrDefault <Friend>();
if (fList != null)
{
MessageBox.Show("A friend with this phone number exists in database. Please try another.");
return;
}
MainWindow.friends.Add(friend);
MyStorage.WriteXML <ObservableCollection <Friend> >("friends.xml", MainWindow.friends);
MessageBox.Show("New friend has been added");
this.Close();
}
private void Btn_save_book_Click(object sender, RoutedEventArgs e)
{
if (book.isbn == null)
{
MessageBox.Show("Please enter ISBN.");
return;
}
Book bList = (from b in MainWindow.books where b.isbn.Contains(book.isbn) select b).FirstOrDefault <Book>();
if (bList != null)
{
MessageBox.Show("The book already exists in database. Please try another.");
return;
}
MainWindow main = (MainWindow)Application.Current.MainWindow;
MainWindow.books.Add(book);
main.availableCount++;
MyStorage.WriteXML <ObservableCollection <Book> >("books.xml", MainWindow.books);
MessageBox.Show("New book has been added");
this.Close();
}
private void Btn_save_Click(object sender, RoutedEventArgs e)
{
MainWindow main = (MainWindow)Application.Current.MainWindow;
if (CBx_friend.SelectedItem == null)
{
MessageBox.Show("Please select a friend ...");
return;
}
selectedFriend = CBx_friend.SelectedItem as Friend;
Friend friend = (from f in MainWindow.friends where f.phone.Contains(selectedFriend.phone) select f).FirstOrDefault <Friend>();
selectedBook.isAvailable = "No";
selectedBook.friend = friend.firstName + " " + friend.lastName;
selectedBook.contact = friend.phone;
selectedBook.borrowDate = date;
selectedBook.returnDate = date.AddDays(days);
friend.bookList.Add(selectedBook.isbn);
main.availableCount--;
MyStorage.WriteXML <ObservableCollection <Friend> >("friends.xml", MainWindow.friends);
MessageBox.Show("The book has been borrowed");
this.Close();
}
private void Window_Closed(object sender, EventArgs e)
{
MyStorage.WriteXML <ObservableCollection <Book> >("books.xml", books);
MyStorage.WriteXML <ObservableCollection <Friend> >("friends.xml", friends);
}
