internal void UpdateData()
{
BookCatalog bookCat = new BookCatalog();
dsBookCat = bookCat.GetAllBookInfo();
this.DataContext = dsBookCat.Tables["Category"];
}
private void Window_Loaded_1(object sender, RoutedEventArgs e)
{
BookCatalog bookCat = new BookCatalog();
dsBookCat = bookCat.GetAllBookInfo();
this.DataContext = dsBookCat.Tables["Category"];
bookAddEdit = new BookAddEdit(); // Creates BookAddEdit object
//this.DataContext = dsBookCat.Tables["Category"];
//bookOrder = new BookOrder();
//userData = new UserData();
//this.orderListView.ItemsSource = bookOrder.OrderItemList;
}