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

Embed the airSlate SignNow webapp into your application with C# Client 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 client for api

The airSlate SignNow API provides organizations with an exceptional set of functionalities that facilitate more efficient business processes. Discover the advantages of our embed the signnow webapp into your application with c client for api by creating a complimentary Sandbox account.

Follow these instructions to establish a Sandbox account:

Visit the airSlate SignNow Developers webpage. 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. Access the email you receive and follow the provided link to verify your email address.
Access Developer Sandbox. Create a password to gain further entry to your developer account.
Include an application. Click Add App, name your application, and click Add to save changes. The API token for the application will be generated automatically.
Evaluate embed the signnow webapp into your application with c client for api. Discover all airSlate SignNow functionalities and how they can improve your business operations.

Follow these instructions to evaluate airSlate SignNow's functionalities. You can reach out to the support team if you have any inquiries. Enhance your business processes 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# Client 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.

I've been using airSlate SignNow for years (since it...

5

Susan S

I've been using airSlate SignNow for years (since it was CudaSign). I started using airSlate SignNow for real estate as it was easier for my clients to use. I now use it in my business for employement and onboarding docs.

Read full review

Everything has been great, really easy to incorporate...

5

Liam R

Everything has been great, really easy to incorporate into my business. And the clients who have used your software so far have said it is very easy to complete the necessary signatures.

Read full review

I couldn't conduct my business without contracts and...

5

Dani P

I couldn't conduct my business without contracts and this makes the hassle of downloading, printing, scanning, and reuploading docs virtually seamless. I don't have to worry about whether or not my clients have printers or scanners and I don't have to pay the ridiculous drop box fees. Sign now is amazing!!

Read full review