Step by Step Guide to Building a SignRequest API Integration in C#

Introduction

Hey there, fellow developer! Ready to supercharge your document signing process? Let's dive into integrating the SignRequest API into your C# project. This powerful API will let you automate document signing, making your life (and your users' lives) a whole lot easier.

Prerequisites

Before we jump in, make sure you've got:

• A SignRequest account with an API key (if you don't have one, go grab it!)
• Your favorite C# development environment
• A can-do attitude (and maybe some coffee)

Setting up the project

First things first, let's get our project ready:

1. Fire up your IDE and create a new C# project.
2. Install the RestSharp NuGet package. It'll make our HTTP requests a breeze.

Install-Package RestSharp

Authenticating with the SignRequest API

Now, let's get cozy with the SignRequest API:

using RestSharp;

var client = new RestClient("https://signrequest.com/api/v1/");
client.AddDefaultHeader("Authorization", $"Token {YOUR_API_KEY}");

Replace {YOUR_API_KEY} with your actual API key. Keep it secret, keep it safe!

Implementing core functionality

Creating a document

Let's upload a document:

var request = new RestRequest("documents/", Method.POST);
request.AddFile("file", "path/to/your/document.pdf");
var response = await client.ExecuteAsync(request);
var documentId = // Extract document ID from response

Adding signers

Time to add some signers:

var request = new RestRequest($"signrequests/", Method.POST);
request.AddJsonBody(new
{
    document = documentId,
    signers = new[]
    {
        new { email = "[email protected]" },
        new { email = "[email protected]" }
    }
});
var response = await client.ExecuteAsync(request);

Sending a signature request

Let's get those signatures rolling:

var request = new RestRequest($"signrequests/{signRequestId}/send_signrequest_email/", Method.POST);
var response = await client.ExecuteAsync(request);

Checking signature status

Curious about the status? Let's check:

var request = new RestRequest($"signrequests/{signRequestId}/", Method.GET);
var response = await client.ExecuteAsync(request);
// Parse the response to get the current status

Handling webhooks

SignRequest can notify you about events. Here's a basic webhook handler:

[HttpPost]
public IActionResult WebhookHandler([FromBody] dynamic payload)
{
    // Process the webhook payload
    // Update your database, trigger notifications, etc.
    return Ok();
}

Error handling and best practices

Always wrap your API calls in try-catch blocks and respect rate limits:

try
{
    // Your API call here
}
catch (Exception ex)
{
    // Log the error, handle it gracefully
}

Testing the integration

Don't forget to test! Write unit tests for each component and run some end-to-end tests to make sure everything's working smoothly.

Conclusion

And there you have it! You've just built a robust SignRequest API integration. Pat yourself on the back – you've earned it! Remember, this is just the tip of the iceberg. The SignRequest API has tons more features to explore.

For more details, check out the SignRequest API documentation.

Happy coding, and may your signatures always be swift and secure! 🚀✍️