Stripe.stripeexception: 'missing required param: amount.'

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I have a cart of items that I am using Stripe Api as a method of payment but I get the exception of missing the param amount,

Stripe.StripeException: 'Missing required param: amount.'

why am I getting the issue since I am including an amount?

C#

public IActionResult CheckOut(string stripeEmail, string stripeToken, bool charged)
        {
            var customers = new CustomerService();
            var charges = new ChargeService();
            var customer = customers.Create(new CustomerCreateOptions{ 
                Email=stripeEmail,
                Source=stripeToken
            });
            var charge = charges.Create(new ChargeCreateOptions
            {
                Amount = ViewBag.stripe,  //--------Issue here---------//
                Description = "product purchased",
                Currency = "usd",
                Customer = customer.Id,
                ReceiptEmail = stripeEmail,
            });

Inside my index I declared the viewbags as:

C#

ViewBag.total = Cost(ViewBag.pricing, ViewBag.tax);
ViewBag.stripe = ViewBag.total * 100;

The cost method I used for ViewBag.total:

C#

public double Cost(double total, double tax)
        {
            return total + tax;
        }

What I have tried:

What I tried is creating another var amount which equals the ViewBag.stripe

C#

var customers = new CustomerService();
var charges = new ChargeService();
var amount = ViewBag.stripe; // <----- Attempted Fix ------->
var customer = customers.Create(new CustomerCreateOptions{
    Email=stripeEmail,
    Source=stripeToken
});

I then tried changing ViewBag.stripe in my index to:

C#

ViewBag.total = Cost(ViewBag.pricing, ViewBag.tax);
ViewBag.stripe = StripeTotal(ViewBag.total); // <----- Attempted Fix ------->

And having my StripeTotal method return ViewBag.total * 100 instead

C#

public double StripeTotal(double amount)
        {
            return ViewBag.total * 100;
        }

I have also tried changing it to

Amount = Convert.ToInt32(ViewBag.stripeTotal)

but instead of the error that I am missing amount, I get another error so this did not work either
I further tried searching online but I just cant seem to find a similar case

Posted 31-Mar-21 11:38am

Member 14526996

Updated 31-Mar-21 19:06pm

v2

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Comments

Arfat M 1-Apr-21 1:41am

A positive integer representing how much to charge in the smallest currency unit
(e.g., 100 cents to charge $1.00). The minimum amount is $0.50 USD
or equivalent in charge currency. The amount value supports up to eight digits (e.g., a value of 99999999 for a USD charge of $999,999.99)

2 solutions

Solution 1

Normally, if you are parsing the string values to integers the best approach is to handle when a string is not an integer. So, instead of:

C#

Convert.ToInt32(ViewBag.stripeTotal)

I would recommend that you do:

C#

int amount = 0;
if (int.TryParse(ViewBag.stripeTotal, out amount)) {
   // okay, use the value and continue
} else {
   // handle the situation where your stripTotal is not valid
   // debug it here
}

Read more here: Int32.TryParse Method (System) | Microsoft Docs[^]

Posted 31-Mar-21 12:50pm

Afzaal Ahmad Zeeshan

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Arfat M · Accepted Answer · 2021-03-31T19:06:00

C#

int StripeAmount = Convert.ToInt32(ViewBag.stripe);

var Amount = (int)(StripeAmount * 100);

var charge = charges.Create(new ChargeCreateOptions
            {
                Amount = Amount,  //--------Pass amount here ---------//
                Description = "product purchased",
                Currency = "usd",
                Customer = customer.Id,
                ReceiptEmail = stripeEmail,
            });