protected void drpBookSelection_SelectedIndexChanged(object sender, EventArgs e)
{
if (drpBookSelection.SelectedValue != "-1")
{
string bookId = drpBookSelection.SelectedItem.Value;
Book selectedBook = BookCatalogDataAccess.GetBookById(bookId);
//todo: Add selected book to the session
List <Book> books = Session["books"] as List <Book>;
if (books == null)
{
books = new List <Book>();
Session["books"] = books;
}
books.Add(selectedBook);
//todo: Display the selected book's description and price
lblDescription.Text = selectedBook.Description;
lblPrice.Text = "$" + selectedBook.Price.ToString();
}
else
{
//todo: Set description and price to blank
lblDescription.Text = "";
lblPrice.Text = "";
}
}
protected void btnAddToCart_Click(object sender, EventArgs e)
{
//Todo: Add your code here
if (!Page.IsValid)
{
return;
}
var shoppingCart = (ShoppingCart)Session["cart"];
var availableBooks = (List <Book>)Session["books"];
Book selectedBook = BookCatalogDataAccess.GetBookById(drpBookSelection.SelectedValue);
BookOrder bookOrder = new BookOrder(selectedBook, int.Parse(txtQuantity.Text));
// updated the selected book list
shoppingCart.AddBookOrder(bookOrder);
// make a selected book unavailable
//availableBooks.Remove(availableBooks.Where(b => b.Id == selectedBook.Id).FirstOrDefault<Book>());
drpBookSelection.Items.Remove(drpBookSelection.Items.FindByValue(selectedBook.Id));
availableBooks.RemoveAll(b => b.Id == selectedBook.Id);
// display messages
lblDescription.Text = $"{txtQuantity.Text} copy of {selectedBook.Title} is added to the shopping cart";
lblNumItems.Text = shoppingCart.NumOfItems.ToString();
drpBookSelection.SelectedValue = "-1";
}
protected void btnAddToCart_Click(object sender, EventArgs e)
{
if (drpBookSelection.SelectedValue != "-1" && Session["shoppingcart"] != null)
{
//////todo: Retrieve selected book from the session
var book = BookCatalogDataAccess.GetBookById(drpBookSelection.SelectedValue);
////todo: get user entered quqntity
int quantity = Int16.Parse(txtQuantity.Text);
////todo: Create a book order with selected book and quantity
BookOrder order = new BookOrder(book, quantity);
////todo: Retrieve to cart from the session
var cart = (ShoppingCart)Session["shoppingcart"];
////todo: Add book order to the shopping cart
cart.AddBookOrder(order);
////todo: Remove the selected item from the dropdown list
drpBookSelection.Items.RemoveAt(drpBookSelection.SelectedIndex);
////todo: Set the dropdown list's selected value as "-1"
drpBookSelection.ClearSelection();
txtQuantity.Text = string.Empty;
////todo: Set the description to show title and quantity of the book user added to the shopping cart
lblDescription.Text = "You have added " + quantity + " copies of: " + book.Title;
////todo: Update the number of items in shopping cart displayed next to the link to ShoppingCartView.aspx
if (cart.NumOfItems == 0)
{
lblNumItems.Text = "empty";
}
else if (cart.NumOfItems == 1)
{
lblNumItems.Text = "1 item";
}
else
{
lblNumItems.Text = cart.NumOfItems.ToString() + " items";
}
}
}
protected void BookList_SelectedIndexChanged(object sender, EventArgs e)
{
if (BookList.SelectedValue != "-1")
{
Book book = BookCatalogDataAccess.GetABookById(BookList.SelectedValue);
lblPrice.Text = String.Format("{0:C}", book.Price);
lblDescription.Text = book.Description;
}
else
{
lblPrice.Text = "";
lblDescription.Text = "";
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack) //on 1st Page Load
{
//get all books in the catalog.
List <Book> books = BookCatalogDataAccess.GetAllBooks();
foreach (Book book in books)
{
//todo: Populate dropdown list selections
ListItem item = new ListItem(book.Title, book.Id);
drpBookSelection.Items.Add(item);
}
}
ShoppingCart shoppingcart = null;
if (Session["shoppingcart"] == null)
{
shoppingcart = new ShoppingCart();
//todo: add cart to the session
Session["shoppingcart"] = shoppingcart;
}
else
{
//todo: retrieve cart from the session
shoppingcart = Session["shoppingcart"] as ShoppingCart;
foreach (BookOrder order in shoppingcart.BookOrders)
{
string bookId = order.Book.Id;
//todo: Remove the book in the order from the dropdown list
ListItem itemToRemove = drpBookSelection.Items.FindByValue(bookId);
drpBookSelection.Items.Remove(itemToRemove);
}
}
if (shoppingcart.NumOfItems == 0)
{
lblNumItems.Text = "empty";
}
else if (shoppingcart.NumOfItems == 1)
{
lblNumItems.Text = "1 item";
}
else
{
lblNumItems.Text = shoppingcart.NumOfItems.ToString() + " items";
}
}
protected void drpBookSelection_SelectedIndexChanged(object sender, EventArgs e)
{
//Todo: Add your code here
if (drpBookSelection.SelectedValue != "-1")
{
Book selectedBook = BookCatalogDataAccess.GetBookById(drpBookSelection.SelectedValue);
lblPrice.Text = selectedBook.Price.ToString();
lblDescription.Text = selectedBook.Description;
}
else
{
lblDescription.Visible = false;
lblPrice.Visible = false;
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
cart.EmptyShoppingCart();
//get all books in the catalog.
ArrayList books = BookCatalogDataAccess.GetAllBooks();
BookList.DataSource = books;
BookList.DataTextField = "Title";
BookList.DataValueField = "Id";
BookList.DataBind();
BookList.Items.Insert(0, new ListItem("Select a Book ...", "-1"));
}
btnViewCart.Text = "View Cart (" + cart.NumOfItems + " items)";
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
////get all books in the catalog.
List <Book> books = BookCatalogDataAccess.GetAllBooks();
foreach (Book book in books)
////todo: Populate dropdown list selections
{
ListItem item = new ListItem(book.Title, book.Id);
drpBookSelection.Items.Add(item);
}
}
ShoppingCart cart = null;
if (Session["shoppingcart"] == null)
{
cart = new ShoppingCart();
////todo: add cart to the session YES
Session["shoppingcart"] = cart;
}
else
{
////todo: retrieve cart from the session YES
cart = (ShoppingCart)Session["shoppingcart"];
foreach (BookOrder order in cart.BookOrders)
{
//todo: Remove the book in the order from the dropdown list
// Removing it here seems redundant when I remove when after adding them
//to my cart in the btnAddToCart_Click() method?
}
}
if (cart.NumOfItems == 0)
{
lblNumItems.Text = "empty";
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//get all books in the catalog - OK
List <Book> books = BookCatalogDataAccess.GetAllBooks();
foreach (Book book in books)
{
//todo: Populate dropdown list selections - OK
ListItem item = new ListItem(book.Title, book.Id); //creating a new list with book title
drpBookSelection.Items.Add(item); //printing the list
}
}
ShoppingCart shoppingcart = null;
if (Session["shoppingcart"] == null)
{
shoppingcart = new ShoppingCart();
//todo: add cart to the session OK
Session["shoppingcart"] = shoppingcart;
}
else
{
//todo: retrieve cart from the session OK
shoppingcart = (ShoppingCart)Session["shoppingcart"];
foreach (BookOrder order in shoppingcart.BookOrders)
{
//todo: Remove the book in the order from the dropdown list - OK
drpBookSelection.Items.Remove(drpBookSelection.Items.FindByValue(order.Book.Id));
}
}
if (shoppingcart.NumOfItems == 0)
{
lblNumItems.Text = "empty";
}
else if (shoppingcart.NumOfItems == 1)
{
lblNumItems.Text = "1 item";
}
else
{
lblNumItems.Text = shoppingcart.NumOfItems.ToString() + " items";
}
}
protected void btnAddToCart_Click(object sender, EventArgs e)
{
Validate();
if (Page.IsValid)
{
Book book = BookCatalogDataAccess.GetABookById(BookList.SelectedValue);
int quantity = Int16.Parse(txtQauntity.Text);
BookOrder order = new BookOrder(book, quantity);
cart.AddBookOrder(order);
BookList.Items.RemoveAt(BookList.SelectedIndex);
string amount = quantity > 1 ? "copies" : "copy";
lblDescription.Text = quantity + " " + amount + " of " + book.Title + " have been added to your cart";
btnViewCart.Text = "View Cart (" + cart.NumOfItems + " items)";
BookList.ClearSelection();
txtQauntity.Text = "";
}
}
protected void drpBookSelection_SelectedIndexChanged(object sender, EventArgs e)
{
if (drpBookSelection.SelectedValue != "-1")
{
string bookId = drpBookSelection.SelectedItem.Value;
Book selectedBook = BookCatalogDataAccess.GetBookById(bookId);
//Add selected book to the session
Session["book"] = selectedBook;
//Display the selected book's description and price
lblDescription.Text = selectedBook.Description;
lblPrice.Text = "$" + selectedBook.Price;
}
else
{
//Set description and price to blank
lblDescription.Text = string.Empty;
lblPrice.Text = string.Empty;
}
}
public static ArrayList RetrieveAllBookOrders()
{
ArrayList orders = new ArrayList();
StreamReader sr = null;
try
{
string path = HttpContext.Current.Request.PhysicalApplicationPath;
string filePath = path + @"\App_Data\BookOrderList.txt";
if (!File.Exists(filePath))
{
return(orders);
}
FileStream bookOrderList = new FileStream(filePath, FileMode.Open, FileAccess.Read);
sr = new StreamReader(bookOrderList);
while (!sr.EndOfStream)
{
string bookId = sr.ReadLine();
int quantity = int.Parse(sr.ReadLine());
Book book = BookCatalogDataAccess.GetBookById(bookId);
BookOrder bookOrder = new BookOrder(book, quantity);
orders.Add(bookOrder);
}
}
catch (Exception)
{
ClearBookOrderList();
}
finally
{
if (sr != null)
{
sr.Close();
}
}
return(orders);
}
protected void drpBookSelection_SelectedIndexChanged(object sender, EventArgs e)
{
if (drpBookSelection.SelectedValue != "-1")
{
string bookId = drpBookSelection.SelectedItem.Value;
Book selectedBook = BookCatalogDataAccess.GetBookById(bookId);
////todo: Add selected book to the session
///Why do I add the selected book to the session when the index changes and not when added to cart?
//todo: Display the selected book's description and price
lblPrice.Text = String.Format("{0:C}", selectedBook.Price);
lblDescription.Text = selectedBook.Description;
}
else
{
//todo: Set description and price to blank YES
lblPrice.Text = "";
lblDescription.Text = "";
}
}
protected void btnAddToCart_Click(object sender, EventArgs e)
{
if (drpBookSelection.SelectedValue != "-1" && Session["shoppingcart"] != null)
{
string bookId = drpBookSelection.SelectedItem.Value;
Book selectedBook = BookCatalogDataAccess.GetBookById(bookId);
//todo: Retrieve selected book from the session
//Book book = Session["book"] as Book;
//todo: get user entered quqntity
int quantity = int.Parse(txtQuantity.Text);
//todo: Create a book order with selected book and quantity
BookOrder order = new BookOrder(selectedBook, quantity);
//todo: Retrieve to cart from the session
ShoppingCart cart = Session["shoppingcart"] as ShoppingCart;
//todo: Add book order to the shopping cart
cart.AddBookOrder(order);
//todo: Remove the selected item from the dropdown list
drpBookSelection.Items.Remove(drpBookSelection.SelectedItem);
//todo: Set the dropdown list's selected value as "-1"
//drpBookSelection.SelectedValue = "-1";
//todo: Set the description to show title and quantity of the book user added to the shopping cart
lblDescription.Text = quantity.ToString() + " copy(s) of " + selectedBook.Title + " is added to the shopping cart";
//todo: Update the number of items in shopping cart displayed next to the link to ShoppingCartView.aspx
if (cart.NumOfItems == 0)
{
lblNumItems.Text = "empty";
}
else if (cart.NumOfItems == 1)
{
lblNumItems.Text = "1 item";
}
else
{
lblNumItems.Text = cart.NumOfItems.ToString() + " items";
}
}
}
protected void Page_Load(object sender, EventArgs e)
{
//Todo: Add you code here
List <Book> availableBooks = BookCatalogDataAccess.GetAllBooks();;
ShoppingCart shoppingCart;
if (Session["books"] == null)
{
Session["books"] = availableBooks;
}
else
{
availableBooks = (List <Book>)Session["books"];
}
if (Session["cart"] == null)
{
shoppingCart = new ShoppingCart();
Session["cart"] = shoppingCart;
lblNumItems.Text = "empty";
}
else
{
shoppingCart = (ShoppingCart)Session["cart"];
lblNumItems.Text = shoppingCart.NumOfItems.ToString();
}
// display the available book list
if (!IsPostBack)
{
for (int i = 0; i < availableBooks.Count; i++)
{
drpBookSelection.Items.Add(new ListItem(availableBooks[i].Title, availableBooks[i].Id));
}
}
}
protected void drpBookSelection_SelectedIndexChanged(object sender, EventArgs e)
{
if (drpBookSelection.SelectedValue != "-1")
{
//todo: Display the selected book's description and price OK
List <Book> books = BookCatalogDataAccess.GetAllBooks(); //creating the list of all books
string bookId = drpBookSelection.SelectedItem.Value; //creating the string ID for the selected item
int bookIdInt = int.Parse(drpBookSelection.SelectedItem.Value) - 1; //parsing ID into int
Book selectedBook = books[bookIdInt]; //selecting book from list
String bookDescription = selectedBook.Description; //creating description string
lblDescription.Text = bookDescription; //adding the description information
String bookPrice = selectedBook.Price.ToString(); //creating price string
lblPrice.Text = bookPrice; //adding the price information
//todo: Add selected book to the session OK
Session["selectedBooksSession"] = selectedBook;
}
else
{
//todo: Set description and price to blank OK
lblDescription.Text = "";
lblPrice.Text = "";
}
}
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//get all books in the catalog.
List <Book> books = BookCatalogDataAccess.GetAllBooks();
foreach (Book book in books)
{
//todo: Populate dropdown list selections
ShoppingCart shoppingCart = (ShoppingCart)Session["shoppingcart"];
bool has = false;
if (shoppingCart != null && shoppingCart.BookOrders != null)
{
foreach (BookOrder bookOrder in shoppingCart.BookOrders)
{
if (book.Id.Equals(bookOrder.Book.Id))
{
has = true;
break;
}
}
}
if (!has)
{
drpBookSelection.Items.Add(new ListItem(book.Title, book.Id + ""));
}
}
}
ShoppingCart shoppingcart = null;
if (Session["shoppingcart"] == null)
{
shoppingcart = new ShoppingCart();
//todo: add cart to the session
Session["shoppingcart"] = shoppingcart;
}
else
{
//todo: retrieve cart from the session
shoppingcart = (ShoppingCart)Session["shoppingcart"];
foreach (BookOrder order in shoppingcart.BookOrders)
{
//todo: Remove the book in the order from the dropdown list
//done
}
}
if (shoppingcart.NumOfItems == 0)
{
lblNumItems.Text = "empty";
}
else if (shoppingcart.NumOfItems == 1)
{
lblNumItems.Text = "1 item";
}
else
{
lblNumItems.Text = shoppingcart.NumOfItems.ToString() + " items";
}
}
