public static CartItemsList GetCart()
{
CartItemsList cart = (CartItemsList)HttpContext.Current.Session["Cart"];
if (cart == null)
{
HttpContext.Current.Session["Cart"] = new CartItemsList();
}
return((CartItemsList)HttpContext.Current.Session["Cart"]);
}
protected void Page_Load(object sender, EventArgs e)
{
// retrieve cart object from session state on every postback
cart = CartItemsList.GetCart();
// on initial page load, add cart items to list control
if (!IsPostBack)
{
this.DisplayCart();
}
}
protected void BtnAdd_Click(object sender, EventArgs e)
{
if (IsValid)
{
//get cart from session state and selected item from cart
CartItemsList cart = CartItemsList.GetCart();
if (selectedMobile != null)
{
cart.AddItem(selectedMobile, Convert.ToInt32(txtQuantity.Text));
Response.Redirect("~/Cart.aspx");
}
}
}