---
title: Accept a payment with the Payment Element using .NET
slug: accept-a-payment-with-the-payment-element-using-net
published_at: 2022-12-19 16:14:43 +0000
updated_at: 2023-01-30 22:51:50 +0000
summary: 
description: In this episode, you'll learn how to accept a one-time payment with a custom form using .NET on the server and the Stripe Payment Element on the client. The Payment Element enables you to collect several different payment method types from cards and bank accounts to wallets and buy-now-pay-later payment methods.    ### Presenter CJ Avilla - Developer Advocate at Stripe - https://twitter.com/cjav_dev   ### Table of contents 00:00 Introduction 01:40 Install a sample with the Stripe for VSCode extension and CLI 05:08 Enable payment methods in the dashboard 06:10 Overview of payment flow 06:38 Create payment intent on the server 09:56 Collect payment details on the client 15:00 Submit payment details to Stripe 17:33 Build a confirmation page 20:50 Handle webhooks and post-processing events 25:14 Test your integration with Stripe test cards 26:31 Conclusion   ### Resources Accept a payment - https://stripe.com/docs/payments/accept-a-payment?platform=web&ui=elements&lang=dotnet PaymentIntent API reference - https://stripe.com/docs/api/payment_intents/create?lang=dotnet Learn all about webhooks - https://stripe.com/docs/videos/developer-foundations?video=webhook-helpers&lang=dotnet   ### Support If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat   ### Updates Sign up to stay updated with developer news: https://go.stripe.global/dev-digest  ### Feedback If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88
tags: [stripe, payments, ecommerce, stripedev, @cjav_dev, cjav_dev, accept a payment with the Payment Element in .NET, dotnet payments, .NET payment, accept a payment with .net, how to accept a payment with a custom form and .net, custom payment form, handle payments with .net, how to accept a payment in dotnet, stripe.net, stripe-dotnet, payment element, stripe payment element]
views: 314
author: CJ Avilla
url: https://www.cjav.dev/videos/accept-a-payment-with-the-payment-element-using-net
youtube_url: https://www.youtube.com/watch?v=B8KDDiXZE90
youtube_id: B8KDDiXZE90
embed_url: https://www.youtube.com/embed/B8KDDiXZE90
thumbnail_url: https://i.ytimg.com/vi/B8KDDiXZE90/hqdefault.jpg
type: video
---

# Accept a payment with the Payment Element using .NET

*Published: December 19, 2022*
*Views: 314*

## Watch

[Watch on YouTube](https://www.youtube.com/watch?v=B8KDDiXZE90)

[![Accept a payment with the Payment Element using .NET](https://i.ytimg.com/vi/B8KDDiXZE90/hqdefault.jpg)](https://www.youtube.com/watch?v=B8KDDiXZE90)

## Description

In this episode, you'll learn how to accept a one-time payment with a custom form using .NET on the server and the Stripe Payment Element on the client. The Payment Element enables you to collect several different payment method types from cards and bank accounts to wallets and buy-now-pay-later payment methods. 


### Presenter
CJ Avilla - Developer Advocate at Stripe - https://twitter.com/cjav_dev


### Table of contents
00:00 Introduction
01:40 Install a sample with the Stripe for VSCode extension and CLI
05:08 Enable payment methods in the dashboard
06:10 Overview of payment flow
06:38 Create payment intent on the server
09:56 Collect payment details on the client
15:00 Submit payment details to Stripe
17:33 Build a confirmation page
20:50 Handle webhooks and post-processing events
25:14 Test your integration with Stripe test cards
26:31 Conclusion


### Resources
Accept a payment - https://stripe.com/docs/payments/accept-a-payment?platform=web&ui=elements&lang=dotnet
PaymentIntent API reference - https://stripe.com/docs/api/payment_intents/create?lang=dotnet
Learn all about webhooks - https://stripe.com/docs/videos/developer-foundations?video=webhook-helpers&lang=dotnet


### Support
If you have a question, please feel free to reach out to our support team on Discord at https://stripe.com/go/developer-chat
 
### Updates
Sign up to stay updated with developer news: https://go.stripe.global/dev-digest

### Feedback
If you have any feedback about this or other episodes, let us know: https://forms.gle/VjNqzRhotM2snYo88

## Transcript

hey what's up welcome back in this episode you're going to learn how to accept a one-time payment using a custom form with the payment element if you're looking for a simpler integration path we have the no code payment links option where you can set up a payment link directly through the dashboard and then share that with your customers through social media email text message Etc alternatively there's another option called stripe checkout this is a a very simple integration that has one API call on the server you redirect your customer to a stripe hosted page but in today's episode we're going to talk about integrating the payment element this allows you to build your own custom hosted form and collect lots of different payment method types so the payment element supports anything from cards all the way to bank accounts you've got support for wallets like Google pay and Apple pay all the way to buy now pay later like a firm and after pay clear pay so it is a great option for building your own custom form to accept a one-time payment so just as a quick roadmap for today we're going to install sample and we're going to go through the dashboard and talk about how you can enable payment methods these are going to be those payment methods that are dynamically rendered into the payment element every time the page loads and then we're going to create a payment intent on the server and use its client secret to render the payment element on the client so that we can collect payment details from the customer it will ultimately submit that payment to stripe and then we're going to handle any of those post-processing events we're going to talk about web Hooks and a few other considerations that you might want to think about as you're building out your integration so let's get into it [Music] all right so this is Visual Studio code this is our editor we're going to use today on the left side you'll notice that we have this s for stripe this is the stripe for vs code extension if you don't already have this extension installed you can head over to the extension Gallery search for stripe and install it there the tool we're going to use today from the striker vs code extension is to start with a stripe sample and so we can search for the starter sample and what we want to do is use the main integration with HTML on the front end and we're going to use.net on the back end we'll name this starter.net and this is going to clone down a an example repository that has sort of a basic end-to-end skeleton of an example that we're going to use today it'll also set some API keys for us it's going to create a an environment variable file that is inside the server directory in dot ends you'll notice that we have our publishable key and our secret key already pre-populated for us that's because the strifer vs code extension set that up because we've already authenticated with the stripe CLI if you go over to the Dot N file in the root of your server directory and you don't see these environment variable values entered you'll want to go to the stripe dashboard and grab your API keys from there and drop them into this dot end file now we get a couple different things as part of this sample we have a client directory that's going to have some simple HTML right now it just has this H1 tag and then on the server we're using the.net minimal API here and you know to start off we're seeing a bunch of squigglies that's because we haven't actually built our application yet so I'm going to jump into the server directory and say.net run and that will clone down our dependencies from nuget it's going to fire up our server and now we can go over to the browser and browse to localhost 4242 and we just see this H1 tag that says sample all right so let's take a look at this server file so it's a fairly vanilla .net minimal API implementation we are configuring a stripe options object with a bunch of environment variables those again came from that dot end file we're also setting up some Services specifically the istripe client and we're going to inject another service for the payment intent and we'll talk about that in a little bit you'll also see that we are setting some app info here you can actually delete that when going to production it's just for debugging purposes we've got static files that we're serving that so that we can just use this very basic front end with HTML and JavaScript and finally we've got a couple routes here one for fetching our publishable key from the server and one for handling web hooks now it is a best practice to fetch the publishable key from the server instead of hard coding that on the client and the reason is that if you ship a mobile app for iOS or Android then it's common that users will install the application one time and they might not ever update that application and so if you have to roll your publishable keys for some reason you want to make sure that you can fetch those is from the server so we're going to expose the publishable key directly from the server and then when we want to go through the Fulfillment process for any payments we're going to use our web hook Handler so we have a web hook already scaffolded out here we'll just need to come down and create a new maybe switch or condition based on the type of the event that we're receiving in the example scaffold here it shows checkout session completed but we're not using checkout today we're going to use payment element so that's what we get as part of the sample and we're ready to jump in and start implementation now from the stripe dashboard we can head over to the settings and to the payment method settings this is where we can manage our payment methods and enable or disable different ways that customers can pay through our payment element so you'll see here that we have cards enabled link Apple pay Google pay several different wallet methods there's lots of different bank redirects these are popular across Europe we also have some buy now pay later payment methods that are enabled finally we even have ACH direct debit as one of the payment methods that customers could use now if we wanted to enable Canadian pre-authorized debits we could click turn on and this would enable us to use Canadian pre-authorized debits as a payment method type inside of our payment flows so this is where we manage our payment methods and these are the payment methods that will be dynamically derived inside of our payment element when we render that and show it to customers so that's how you enable and manage your payment methods instead of needing to deploy any new code you can just come into the dashboard and enable or disable different payment method types all right so this is a an overview of the payment flow that we're going to implement today when a customer lands on our page we're going to make an Ajax request back to our server from the server we're going to make an API call to stripe to create this thing called a payment intent stripe will return a payment intent object to us that has this client secret property that we're going to send back to the front end and then use that to ultimately render the payment element so let's jump into the server and we're going to add an endpoint that's going to make this API call so here inside of the server we're going to add a new app. map post and this is going to be to create payment intent uh we're going to accept in the HTTP request as Rec we're also going to inject this other service called a payment intent service this is a class that's available as part of stripe.net and it enables us to interact with all of the payment intent endpoints so what we want to do now is go to our service registry here and say Builder dot Services dot add Singleton and we're going to pass in that class there so that we can get back this payment intent service that will be already like constructed for us okay so now what we can do is actually make our API call so because we have the strike for vs code extension installed we have these Snippets available so we can say strive payment intent create and hit Tab and that'll Auto populate all of the code that we need for making this API call so at the top here we're constructing this thing called a payment intent create options this is the arguments that we're going to send to the API then the snippet is automatically creating a new instance of this payment intent service but that's injected so we can actually just pull that down and then finally we are making the API call to stripe and on this line here on line 60. the service has two different methods one is create another is create async and this will allow us to use the async await pattern to get back a payment intent so I can say uh payment intent is going to be the result of this call now the arguments to the API we can change these up a little bit the amount is going to be 10.99 it's an integer value of the smallest denomination possible for our given currency so if we're talking about USD this is going to be 10.009 99 Cents or 1099 we can also change our currency if we wanted to Euros instead of hard coding payment method types we're going to enable automatic payment methods so I can do this by passing in this new object that we're going to configure to say we want to enable these automatic payment methods so that our payment methods that are displayed in the payment element are derived based on those settings that we just configured inside of the stripe dashboard finally we need to return the client secret property for this payment intent back to the front end so we're going to say return results dot okay and we're going to just pass in a new object here that we're going to create with the client secret being the payment intents dot client secret and we should be good to go so let's open up our terminal here we'll restart our server and then we're going to start a second terminal session by clicking the plus there and we're going to make a curl request to localhost 4242 create payment intent just to confirm that our endpoint is working as expected we got back this Json that has the client secret property and the string value for that payment intense client secret this is great because this is the tool that we need to use on the front end to render the payment element all right let's turn our attention to the front end so I'm going to open up index.html here and right now it has an H1 of sample we're going to say accept a payment and we also need to add a form where we're ultimately going to collect payments so we're going to say this form is going to have an ID of payment form and inside of this form we're going to add a couple of different things the first is going to be a div with the ID payment element now this is just an empty container for now but this is where we will ultimately render that payment element we're also going to have a div here called error messages and that's just going to be where we populate any error messages that we receive as the result of attempting to submit payment to stripe so if there's any errors at all we'll just render those out into that div and finally we're just going to add a simple button here that says pay so let's save that we're going to open up our terminal again okay we've got our server running and localhost 4242 now looks like this notice we just have a button but we don't actually see the payment element so at the top inside of the head of our index.html we'll notice that we are loading stripe.js from js.stripe com that is a best practice we want to do that on every page to decrease fraud we also need another script tag because we're going to write some JavaScript on the front end that is going to mount that payment element so I'm going to say script source is going to be dot slash payment.js we're going to create a new file here and save it in the client directory and we're going to call it payment.js now when the Dom is fully loaded we're going to do a couple things the first is fetch the publishable key from the server then we're going to create the payment intent on the server and finally we're going to mount our elements all right so we're going to use the fetch API today we're going to make this first request back to slash config and that will return a promise that will resolve with a response object and we want the Json off of that object now that Json method is also going to return a promise that we can await and we can pull off the publishable key okay and we want to use that publishable key to initialize an instance of the stripe object so we're going to say call stripe and pass in the publishable key this stripe Constructor function comes from that stripe.js script that is loaded on index.html now that we have this instance of stripe we need to create the payment intent on the server so let's make another fetch call this one is going to be to create payment intent and we're going to pass in an options block here that's going to allow us to specify that the method for this request should be a post request and we also want to pass in some headers here we'll say that the content type is application Json now again if we wanted to here we could pass in a body a couple of things we might do from the front end is pass back maybe like a product ID or something that we could then look up our products in the database so that we could determine what price or what amount that we want to charge but today we're just going to leave this body off and we're hard coding that 10.99 okay this fetch call is also going to return a promise with this response object and again we want the Json off of that and ultimately this is going to uh return a promise that we want to get the client secret property from this client's secret property is going to be used for our elements group so the The Next Step here is we want to construct an elements group so we're going to say elements is stripe dot elements now if you're familiar with the older style Legacy card element that just collects card payments then the old way that we would do this is just by calling stripe.elements getting back in elements group now when we're talking about the payment element the elements group is accepts in an argument which is this options block that has the client secret property of the payment intent and that's because these elements need to know information about the payment intent like what are the payment method types that are enabled for this payment intent and also what is the currency of the payment intent so that it can properly render those the accurate payment method types that it wants to support okay the next thing we want to do is create a payment element from this elements group so we're going to say elements.create and we pass in the string payment and finally we're going to mount that so we're going to say paymentelement.mount and we pass in the CSS selector for the div or container where we want to mount that payment element so that matches with the ID of this div okay so now at this point if we refresh the page you'll notice that the payment element is now rendering this is fantastic okay so we can see that we can accept card payments or ideal payments or even a lot of other different payment method types that are supported by Euros so this is really great but if we were to submit or click on the pay button right now nothing is actually happening that's because we have not actually submitted payment to stripe yet so we're going to do that with JavaScript here in just a bit so to submit payment to stripe we want to grab reference to that form element so we're going to say document.getelementbyid payment form and this is going to give us back a form object that we can then add some event listeners to so form dot add event listener for submit and when the form is submitted we want to prevent the default so that we don't actually cause a full page submission and then finally we want to submit the payment to stripe so we're going to call stripe dot confirm payment now this method again takes in an object and one of the things that we must include in that object is reference back to the elements group that we created earlier we can also pass some confirm params which would include the return URL now the return URL is where the customer will be redirected after they finish the payment flow now if you are using card payment for instance or some payment method type that does not require a redirect you can also control and configure that here for now we're going to use this default and we're going to say that our return URL is actually just going to be window.location.href we're going to split on the question mark in case there's a query string we're just going to add on complete.html so we're just going to redirect to some page called complete.html we haven't actually implemented that yet so we'll need to go do that next now stripe.confirmed payment is going to return a promise and that promise might resolve within error property now if there's an error we're going to use that error messages div and populate that with the message that is on the error received so we're going to say error messages is document.getelementbyid error messages and then we're going to say error messages dot enter text is equal to error.message and we should be good to go all right let's take this for a spin we're going to enter in some test card details so all four twos and a future expiration and any CVC in a valid zip code and we can hit pay so that submitted payment and we were redirected to this page that says complete.html you'll notice in the query string for this page we also see the ID of the payment intent and the client secret of the payment intent so we'll use these in the next step in order to render this confirmation page for completion all right let's create a new page here and we're going to save this as complete.html in the client directory and we're just going to start off by copying some of the HTML that's over here in our index route we're going to make a new Javascript file called complete.js and we need to add some closing tags here and we're going to format oh right We're Off to the Races so this is going to be uh called complete and then we're just going to add a pre-tag here with the idea of payment intent we'll render out the Json for the payment intent into this pre-tag you can use your imagination for what this might actually look like in practice so for now we just see this uh complete header and we need to go Implement complete.js so we're going to create a new file here we're going to call it complete.js and we'll save that again when the Dom is fully loaded we're going to fetch the publishable key and then we're going to retrieve the payment intent and render okay so our publishable key is again going to be something that we can fetch from slash config and we're going to initialize an instance of the stripe object which we'll use in order to re-retrieve the payment intent we need to know the client secret for the payment intent in order to re-retrieve it so we're going to pull that out of the query string parameters by saying params is new URL search params using window.location.href and then we can grab off the client Secret by saying params.getpayment intent client Secret and finally we can call stripe dot retrieve payment intent passing in that client Secret and we're going to get back a promise that we can then await which will resolve with the payment intent from the API finally we want to grab reference to that payment intent pre-tag Say document.getelement by ID payment intent and we'll say payment intent pre dot enter text is going to be equal to Json dot stringify of the payment intent I'm gonna pass in null 2 so that it looks nice and we'll refresh our page that is the Json for the payment intent so here we can see things like the amount for the payment intent the status of the payment intent all the different payment method types that were rendered we even have the ID of the payment method that we might want to store off now in practice we do not want to use this completion page as the signal for whether or not we should fulfill payment so once someone lands on this page we don't want to use this as the way to know that payment was successful there's a whole bunch of different reasons for that for instance they could close their browser their internet could die their battery might die on their on their computer or phone so we don't want to actually use the loading of this completion page instead we want to use web hooks so we're going to talk about that in the next step all right let's take a quick look at how we can use the striper vs code extension to build and test our web hook endpoint recall that in program.cs here we have a web hook Handler that is listening for post requests from stripe and if the event type is one of payment intent succeeded then we want to execute some code here so what we're going to do is we're going to pull off the payment intent which is going to be available inside of the stripe event.data.object and we need to cast this to a stripe dot payment intent it's going to be an instance of a payment intent object and finally we're just going to log out the payment intent id and we'll just put like a little money bag emoji here inside of the terminal just so that we can see that okay I'm going to remove these comments and we should be good to go so let's restart our server and then we're going to use the straightfor vs code extension and if we look at the under the events section one of the tools is called forward events to your local running web hook Handler from stripe so here we're going to specify which URL endpoint we want to forward those events to so localhost 4242 webhook this is going to be for our account endpoint this is all of the events that are firing on our own stripe account it will form a direct connection between stripe in our local running machine so that events are delivered to us now in the logs for listen down here so the the listen command is what's actually being used in order to forward these events we will see different events that are firing Now by default my stripe account uses the 2019-05 16 API version that does not match the latest API version and so some of the shapes for objects that are going to be sent to my webhook endpoint are not going to be the same and so what I need to do is actually start The Listener with Dash l so that's not actually supported by the stripe for vs code extension but if you're setting up your stripe account it is on the latest version and you can see the latest version here and your stripe.net client library is also pinned to that latest version then you should be good to go so what I'm going to do is actually cancel that out and say stripe listen dash dash forward to localhost 4242 webhook now I'm going to use the dash L command so that when it fires up the listener it's using the latest API version this will match the API version that my local version of stripe.net is pinned to so that the shape of the events that are coming in match that API version all right so now if we were to head back over to localhost 4242 and reload the page you'll notice that a brand new payment intent is being created that's because as soon as the page loads we're making that Ajax request to the server the server is making the API call to stripe when that API call is made this payment intent.created event fires so if we wanted to we could build automations around you know how many times our payment intents being created and then not actually being succeeded so you can imagine some tools around you know measuring your conversion based on some of these events all right so let's go back to the payment flow one more time we're going to use this 4242 card again and click on pay now you'll notice that several different events fired including this payment intent.ucceeded event this is the output again for the listen command which is forwarding those events to our local machine so now if we look at the server logfort.net you'll notice that this payment intent with the ID being printed out here is uh that code that we just added as part of our web hook Handler again you do want to use web hooks for any and all fulfillment you don't want to use this completion page or loading of this completion page for fulfillment there are several different event types that are related to payment intents and also to all objects inside of the stripe API so you'll want to head over to the documentation and take a look at what event types are supported now when you go to production you won't actually use the stripe CLI or strike for vs code extension to forward those web hooks instead you'll go to your stripe dashboard and configure web hooks we have several episodes all about setting up your web hooks so head over to the striped Developers YouTube channel and check out the web hook handling for net you might be wondering how to test out your integration well over in the documentation for accepting a payment you can drill down into the test integration section and for each of the different payment method families between cards wallets Bank redirects Etc there are several different things that will allow you to test different scenarios so for instance we can grab this card this test card that ends in 3155 and we can use that as one of our test cards inside of the payment element and you'll notice that as we go through the payment flow here this will trigger a secure customer authentication payment flow so this is going to pop up a modal and in production this modal would contain a bank account 2fa or sort of like a one-time code or some way to verify that the customer is who they say they are and that they are allowed to authenticate this payment so that's one way that you can test sort of 3D secure and secure customer authentication is with that special card number another thing worth noting is in the documentation there are some optional steps depending on specific payment method types or QR code based payment methods these might require that you pass additional details when creating the payment intent or they might have other considerations like with Apple pay you'll need to go into the dashboard and make sure that you have an Apple pay domain set up and verified so just to review the entire flow the customer lands on the page and we use any information from that page to create a payment intent using the API and then when we return that payment intense client secret to the client we use that to build out a payment element on our custom form that's where customers enter their billing details and then we can submit that payment directly to stripe client side and then the customer is redirected to a return URL where we display this return status or this success status completion status and finally we're handling fulfillment with our web hook that's where we're actually pulling from inventory and printing shipping labels and doing all those things that we might do when someone buys something from us thank you so much for watching and we'll see in the next one foreign [Music]

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