protected void btnAddToCart_Click(object sender, EventArgs e)
{
//make sure that there are enough units in stock
if (vldQuantity.IsValid) //<stretch>Should also have server side validation in case of multiple users/connections</stretch>
{
NorwinDBTableAdapters.CartTableAdapter cart = new NorwinDBTableAdapters.CartTableAdapter();
NorwinDBTableAdapters.ProductsTableAdapter products = new NorwinDBTableAdapters.ProductsTableAdapter();
//get input
int numberToOrder = int.Parse(cbxQuantity.SelectedValue);
float unitPrice = (float)products.GetUnitPriceByProdID(Convert.ToInt32(Request.QueryString[0]));
float subTotal = (float)numberToOrder * unitPrice;
//add the selected quantity of the item to the cart table in the DB
cart.InsertCartItem(prodName, numberToOrder, prodID, custID, Session.SessionID, unitPrice, subTotal);
products.UpdateInStock((short)(unitsInStock - numberToOrder), prodID);
lsvProdDetails.DataSource = products.GetDataByProdID(Convert.ToInt32(Request.QueryString[0]));
lsvProdDetails.DataBind();
lblItemAdded.Text = numberToOrder + " items added to order.";
}
else
{
lblItemAdded.Text = "...";
}
}
protected void btnRemove_Click(object sender, EventArgs e)
{
custID = cbxCustomer.SelectedValue;
//casting sender to a Button to make use of the CommandArgument property. Not sure if this is good practice, feels a little hacky.
Button btnRm = (Button)sender;
//Must pass it all as one string from the page, so it takes a few extra steps to split it up into the required types.
string[] theArgs = btnRm.CommandArgument.Split(',');
int productId = int.Parse(theArgs[0]);
int cartItemQuantity = int.Parse(theArgs[1]);
int cartItemId = int.Parse(theArgs[2]);
int currentlyInStock = Convert.ToInt32(products.GetInStockByProdID(productId));
//delete the row from the db in the cart
cart.removeCartItem(cartItemId);
//refresh the view
lsvCart.DataSource = cart.GetDataByCustID(custID);
lsvCart.DataBind();
products.UpdateInStock((short)(cartItemQuantity + currentlyInStock), productId);
}
