protected void btnGo_Click(object sender, EventArgs e)
{
/*Variable to find if the coupon is valid or not.
* 0. Error
* 1. Valid
* 2. Invalid coupon: Already used.
* 3. Invalid coupon: Coupon not applicable.
* 4. Wrong coupon code.*/
if (Session["Coupon"] != null)
{
lblCouponError.Text = "Only 1 coupon can be applied for each order";
}
else
{
int couponFlag = objBAL.CheckCouponCode(txtCouponCode.Text, Convert.ToString(Session["UserID"]));
switch (couponFlag)
{
case 0:
lblCouponError.Text = "ERROR: Please try after sometime";
break;
case 1:
lblCouponError.Text = "";
lblSign5.Visible = true;
lblDiscount.Visible = true;
Coupon coupon = objBAL.GetCoupon(txtCouponCode.Text);
lblDiscount.Text = coupon.Amount.ToString();
Session["Coupon"] = coupon;
break;
case 2:
lblCouponError.Text = "Coupon already used";
break;
case 3:
lblCouponError.Text = "Coupon is not applicable for you";
break;
case 4:
lblCouponError.Text = "Invalid coupon code";
break;
}
txtCouponCode.Text = "";
}
}