//*******************************************************
//
// The Page_Load event on this page is used to load the
// ShoppingCart DataGrid *the first time* the page is
// accessed.
//
// Note that subsequent postbacks to the page *do not*
// reload the Datagrid. Instead, we rely on the control's
// built-in viewstate management to rebuild the control
// on the server.
//
//*******************************************************
private void Page_Load(object sender, System.EventArgs e)
{
if (Page.IsPostBack == false)
{
// Calculate end-user's shopping cart ID
IBuySpy.ShoppingCartDB cart = new IBuySpy.ShoppingCartDB();
String cartId = cart.GetShoppingCartId();
// Populate datagrid with shopping cart data
MyDataGrid.DataSource = cart.GetItems(cartId);
MyDataGrid.DataBind();
// Update total price label
TotalLbl.Text = String.Format("{0:c}", cart.GetTotal(cartId));
}
}
//*******************************************************
//
// The PopulateShoppingCartList helper method is used to
// dynamically populate a GridControl with the contents of
// the current user's shopping cart.
//
//*******************************************************
void PopulateShoppingCartList()
{
IBuySpy.ShoppingCartDB cart = new IBuySpy.ShoppingCartDB();
// Obtain current user's shopping cart ID
String cartId = cart.GetShoppingCartId();
// If no items, hide details and display message
if (cart.GetItemCount(cartId) == 0)
{
DetailsPanel.Visible = false;
MyError.Text = "There are currently no items in your shopping cart.";
}
else
{
// Databind Gridcontrol with Shopping Cart Items
MyList.DataSource = cart.GetItems(cartId);
MyList.DataBind();
//Update Total Price Label
lblTotal.Text = String.Format("{0:c}", cart.GetTotal(cartId));
}
}
