Electronic Signature
Developers
Features
API for eSignature Solutions
Create a freeform signature invite with C# Client for API

Create a freeform signature invite with C# Client using the API

Send a document without fillable fields for signing directly from your app or website. Allow recipients to sign the document and add fillable fields anywhere on a page. No airSlate SignNow account required.

Free to test
Fast to deploy
Powerful & secure

Allow signers to import fields manually

Use the sample code to create freeform invites. Upon receiving a document, recipients will be able to fill in all their necessary details by inserting fields anywhere on the document.

Node.js

C#

Python

cURL

Copy code

public class SignatureInviteFreeForm
    {
        public string to { get; set; }
        public string from { get; set; }
        public IEnumerable<string> cc { get; set; }
        public string subject { get; set; }
        public string message { get; set; }
    }
public partial class RestSharpSamples
    {
        /// <summary>
        /// Send invite without fields and roles (Free Form)
        /// </summary>
        public static void SendFreeForm(string accessToken, string apiUrl, string documentId, SignatureInviteFreeForm dataObj,  bool disableEmail = false)
        {      
            var client = new RestClient { BaseUrl = new Uri(apiUrl) };
 
            var disable = (disableEmail) ? "?email=disable" : "";
            var request = new RestRequest("/document/" + documentId + "/invite" + disable, Method.POST)
                .AddHeader("Accept", "application/json")
                .AddHeader("Authorization", "Bearer " + accessToken);
 
            request.RequestFormat = DataFormat.Json;
            request.AddBody(dataObj);
 
            var response = client.Execute(request);
            if (response.StatusCode != HttpStatusCode.OK)
            {
                throw new Exception($"Cannot send invite. {response.Content}");
            }
        }
    }

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.

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airSlate SignNow regularly wins awards for ease of use and setup

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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

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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#.

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

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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 create a freeform invite with c client for api

The airSlate SignNow API equips organizations with a distinctive array of features that facilitate more efficient business processes. Discover the advantages of our create a freeform invite with c client for api by utilizing a complimentary Sandbox account.

Complete these actions to set up a Sandbox account:

Navigate to the airSlate SignNow Developers section. There you will find additional information about the API and can sign up for your Sandbox account.
Register for a trial. Enter your email address and click the Create API sandbox button to enroll.
Verify your email address. Access the email you receive and follow the link to confirm your email address.
Access Developer Sandbox. Create a password to gain further access to your developer account.
Include an application. Click Add App, assign a name to your app, and click Add to save changes. The API token for the application will be generated automatically.
Experiment with create a freeform invite with c client for api. Discover all airSlate SignNow features and how they can optimize your business operations.

Complete these steps to assess 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 create a freeform signature invite 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.

This service is really great! It has helped...

5

anonymous

This service is really great! It has helped us enormously by ensuring we are fully covered in our agreements. We are on a 100% for collecting on our jobs, from a previous 60-70%. I recommend this to everyone.

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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