Electronic Signature
Developers
Features
API for eSignature Solutions
Embed the airSlate SignNow webapp into your application with C# SDK for API

Embed the airSlate SignNow webapp into your application with C# SDK using the API

Integrate eSignature workflows into your custom app using the airSlate SignNow API. Create fillable templates and send them for signing to one or multiple recipients in a specific order.

Free to test
Fast to deploy
Powerful & secure

Integrate airSlate SignNow functionality into your app

Use this sample code to integrate eSignature workflows into your app.

Node.js

C#

Copy code

public partial class RestSharpSamples
    {
        /// <summary>
        /// Generate HTML code of iFrame with embedded airSlate SignNow webapp
        /// </summary>
        public static string GetEmbeddedSignatureHtmlCode(string accessToken, string apiUrl, string documentId)
        {
            var client = new RestClient { BaseUrl = new Uri(apiUrl) };
 
            var request = new RestRequest("/link", Method.POST)
                .AddHeader("Accept", "application/json")
                .AddHeader("Authorization", $"Bearer {accessToken}");
 
            request.RequestFormat = DataFormat.Json;
            request.AddBody(new { document_id = documentId });
 
            var response = client.Execute(request);
 
            if (response.StatusCode != HttpStatusCode.OK)
            {
                throw new Exception(response.Content);
            }
 
            var model =  JsonConvert.DeserializeObject<SigningLinkResponseModel>(response.Content);
 
            return $"<iframe src=\"{model.url}\"  width=\"100%\" height=\"100%\"></iframe>";
        }
    }

We provide developers with complete SDKs for all popular languages, allowing them to integrate eSignature workflows without writing a single line of code.
With our detailed documentation, integrating the airSlate SignNow API is a breeze.
The airSlate SignNow API not only provides you with eSignatures: use it to create fillable forms, request payments, and download & archive documents using simple API calls.

View full API reference

airSlate SignNow regularly wins awards for ease of use and setup

Read our reviews on the trusted resources

Tech Data uses airSlate SignNow to improve our internal and external customer service while increasing our speed to revenue.

Bob Dutkowsky | CEO

Select an API package for your business

Integrate eSignatures into your software and get 250 legally-binding signature invites with your API free trial.

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Solution engineers

We are here to help you configure eSignature API to your workflow.

Review airSlate SignNow’s API documentation

The detailed API tutorial will guide you through the entire integration process and provide clear coding examples.

Video guides

Watch our video guides for instructions on how to easily build custom integrations.

Start with any of our SDKs

Get complete SDKs for Node.js, Python,
PHP, Java, C#.

Enterprise-grade security and compliance

airSlate SignNow is committed to protecting your sensitive information by complying with global industry-specific security standards.

Learn more

GDPR compliance

Regulates the use and holding of personal data belonging to EU residents.

SOC 2 Type II Certified

Guarantees the security of your data & the privacy of your clients.

PCI DSS certification

Safeguards credit/debit card data for every monetary transaction a customer makes.

21 CFR Part 11

FDA-backed standards for electronic documentation and electronic signatures.

HIPAA compliance

Protects the private health information of your patients.

CCPA compliance

Enhances the protection of personal data and the privacy of California residents.

Watch the airSlate SignNow API in action

Evaluate airSlate SignNow's embed the signnow webapp into your application with c sdk for api

The airSlate SignNow API equips companies with an exceptional array of functionalities that facilitate more streamlined business operations. Explore the benefits of our embed the signnow webapp into your application with c sdk for api with a complimentary Sandbox account.

Complete these actions to establish a Sandbox account:

Navigate to the airSlate SignNow Developers page. There, you can find additional details regarding the API and set up your Sandbox account.
Register for a trial. Enter your email address and click the Create API sandbox button to sign up.
Verify your email address. Open the email you receive and follow the link to confirm your email address.
Access Developer Sandbox. Create a password to enable further access to your developer account.
Create an application. Click Add App, assign a name to your app, and click Add to save changes. An API token for the app will be generated automatically.
Evaluate embed the signnow webapp into your application with c sdk for api. Discover all functionalities of airSlate SignNow and how they can improve your business processes.

Follow these procedures to explore airSlate SignNow's features. You can reach out to the support team if you have any inquiries. Optimize your business operations with airSlate SignNow today.

How it works

Create an account and get the required tokens

Use code samples to embed the airSlate SignNow webapp into your application with C# SDK using the API

Enjoy the power of eSignature in your workflows

Watch our instructions to build custom integrations with ease

airSlate SignNow offers a free testing environment to explore the eSignature.

Trusted eSignature solution — what our customers are saying

Explore how the airSlate SignNow eSignature platform helps businesses succeed. Hear from real users and what they like most about electronic signing.

Get system for small businesses

5

Agency

What do you like best?

In own and operate a small business and this has been great in helping to close more business. I was printing out large amounts of paperwork for the client to sign before we could start helping them with their business. The problem was that the client felt overwhelmed and would delay in signing it until they took it home and read all the paperwork. Now that we have airSlate SignNow, they can look at it online and sign our agreement faster. Plus it saves time for me and my business trying to get this part complete. The customer is always looking for the easy button and this helps. We can also add this to our tabet setup so customers can sign up on the go with our team. Driving down operating costs while maintaining a high customer experience is what I strive for as a business owner and this provides the tools needed to grow.

Read full review

Great system

5

Administrator in Banking

What do you like best?

User friendly, easy access, clients can use it fast and use it. Clients can use the system through their phones. Easy to understand how the app works. Also the price is pretty reasonable for the type of work I use it for. Guides the clients through signatures and what they need to sign next on the application. The simpler the better, the more easy access the better.

Read full review

airSlate SignNow gives us the ability to help our clients better

5

Conor M

What do you like best?

The best about airSlate SignNow is how easy it is to use for both our firm and our clients. The interface is intuitive and the overall UX makes creating signable forms completely hassle-free.

Read full review