protected void submitBtn_Click(object sender, EventArgs e)
{
int quantity = Int32.Parse(quantityTxt.Text);
int id = Int32.Parse(Request.QueryString["id"]);
if (quantityTxt.Text == "")
{
errorLb.Text = "Quantity must be filled";
}
else if (quantity <= 0)
{
errorLb.Text = "Quantity must be greater than zero";
}
else if (!CartHandler.checkQuantity(id, quantity))
{
errorLb.Text = "Quantity exceeds the limit";
}
else
{
addProduct();
}
}
