Preview a document before sending it for signing with C# SDK using the API

Double check your document before sending a signature request using the airSlate SignNow API. airSlate SignNow's Document Preview feature allows you to view your document as the recipient who will complete and sign it.

  • Free to test
  • Fast to deploy
  • Powerful & secure

Ensure the accuracy of a document before sending it out

Use the airSlate SignNow API to preview your document before sending a signature request

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  • 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.

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
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.

GDPR compliance
GDPR compliance
Regulates the use and holding of personal data belonging to EU residents.
SOC 2 Type II Certified
SOC 2 Type II Certified
Guarantees the security of your data & the privacy of your clients.
PCI DSS certification
PCI DSS certification
Safeguards credit/debit card data for every monetary transaction a customer makes.
21 CFR Part 11
21 CFR Part 11
FDA-backed standards for electronic documentation and electronic signatures.
HIPAA compliance
HIPAA compliance
Protects the private health information of your patients.
CCPA compliance
CCPA compliance
Enhances the protection of personal data and the privacy of California residents.

Watch the airSlate SignNow API in action

Get started with uninterrupted eSignature API: preview a document before sending it for signing with C# SDK using the API

Consolidate and streamline your eSignature workflows and establish seamless processes. Try the airSlate SignNow API, implement eSignature workflows into your custom apps and websites in minutes, and seamlessly preview a document before sending it for signing with C# SDK using the API.

Preview a document before sending it for signing with C# SDK using the API the airSlate SignNow API for uninterrupted eSignature API

  1. Click API on the airSlate SignNow main page and create your API Sandbox account.
  2. Open your email to confirm the registration and specify a password for accessing your Developer Sandbox environment.
  3. Find the list of your apps at the top of the page. By default, you can also find a Test App for testing the API.
  4. Click its name to access the Client ID and Basic Authorization Token.
  5. Launch the API using the information from the previous step.
  6. Use the code samples from the airSlate SignNow library.
  7. When you're ready to go live, go to your airSlate SignNow account and choose a subscription plan.
  8. If you can't find a subscription that suits your needs, contact the Sales team.
  9. Change the test URL in your requests to the production environment URL.
  10. Delight your customers and partners with a streamlined eSignature experience.

The airSlate SignNow API is straightforward to embed, test, and operate (no sales people involved). Get the ability to preview a document before sending it for signing with C# SDK using the API easily. Select airSlate SignNow to get more streamlined eSignature workflows.

How it works

Create an account and access the API Dashboard
Copy required code from the library to preview a document before sending it for signing with C# SDK using the API
Track how your productivity grows with accelerated 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.

Keeps all my contracts in a convenient location accessible 24/7!
5
Philip M

What do you like best?

I love how easy it is to send out contracts to my clients. I've only had one or two clients not know how to use airSlate SignNow when they receive the email from me. When I encountered that I used airSlate SignNow's helpful links to send to my client to help them understand how to use airSlate SignNow and hence sign the contract! I also love the app so that I make access the signed contracts when traveling for business.

Read full review
Electronic signature for business
5
Judy D

What do you like best?

Much easier to have electronic copies of sales contracts - no more paper. My products are often shipped so many times do not see clients face to face. This enables me to still have a valid signed contract.

Read full review
4 years great exper
5
Tiffany J

What do you like best?

The platform is extremely user friendly. I’ve been easily able to navigate the app with no issues.

Read full review

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FAQs

Below is a list of the most common airSlate SignNow API questions and answers. Just choose a question to view a detailed answer.

Need help? Contact support

Ready to get started?

It’s time to watch the airSlate SignNow API in action. Create your developer account and upload documents, request signatures, and check the status of your document.

Why choose the airSlate SignNow API?:

  • Free to test and easy to deploy
  • SDKs for popular languages
  • Customizable for any workflow
  • Industry-leading security & compliance