如何无需运行WebApp，使用DocuSign C# SDK实现远程签署？

Absolutely! You don’t need to run a dedicated web app or manually click remote signing options to send signature requests automatically with the DocuSign C# SDK. You can fully automate this workflow from a standalone process—here’s how to do it:

1. Set Up Server-Side Authentication #

First, you’ll need to authenticate your application without user interaction. The best approach here is JWT Authentication (JSON Web Token), which lets your app authenticate directly with DocuSign after a one-time authorization setup.

Here’s a quick code snippet to get your access token:

var apiClient = new ApiClient("https://demo.docusign.net/restapi");
var jwtConfig = new JwtConfiguration
{
    ClientId = "YOUR_INTEGRATION_KEY",
    UserId = "YOUR_USER_ID",
    OAuthBasePath = "account-d.docusign.com",
    PrivateKey = File.ReadAllText("private_key.pem"),
    Scopes = new List<string> { "signature", "impersonation" }
};

var accessToken = apiClient.RequestJWTUserToken(
    jwtConfig.ClientId,
    jwtConfig.UserId,
    jwtConfig.OAuthBasePath,
    jwtConfig.PrivateKey,
    3600,
    jwtConfig.Scopes
);
apiClient.Configuration.DefaultHeader.Add("Authorization", $"Bearer {accessToken}");

2. Construct and Send the Envelope Programmatically #

Next, build your envelope definition directly in code—no need to wait for POST data from another web app. You’ll define the document, signers, and signature tabs, then send the envelope with a single API call.

Example code to create and send an envelope:

var envelopesApi = new EnvelopesApi(apiClient);

// Load your document
var documentBytes = File.ReadAllBytes("document_to_sign.pdf");
var document = new Document
{
    DocumentBase64 = Convert.ToBase64String(documentBytes),
    Name = "Contract",
    DocumentId = "1"
};

// Define the signer
var signer = new Signer
{
    Email = "signer@example.com",
    Name = "John Doe",
    RecipientId = "1",
    RoutingOrder = "1"
};

// Add a signature tab (position it on the document)
var signHereTab = new SignHere
{
    DocumentId = "1",
    PageNumber = "1",
    XPosition = "100",
    YPosition = "100"
};
signer.Tabs = new Tabs { SignHereTabs = new List<SignHere> { signHereTab } };

// Build the envelope
var envelopeDefinition = new EnvelopeDefinition
{
    EmailSubject = "Please sign this contract",
    Documents = new List<Document> { document },
    Recipients = new Recipients { Signers = new List<Signer> { signer } },
    Status = "sent" // This triggers the email send
};

// Send the envelope
var envelopeSummary = envelopesApi.CreateEnvelope("YOUR_ACCOUNT_ID", envelopeDefinition);
Console.WriteLine($"Envelope sent! Envelope ID: {envelopeSummary.EnvelopeId}");

3. Run as a Standalone Process #

You can package this code into:

• A console application: Run it manually or schedule it via Windows Task Scheduler/cron.
• A Windows service: Run it in the background to handle automated requests.
• A serverless function: Deploy to Azure Functions, AWS Lambda, or similar to trigger on events (like a database update or scheduled time).

Key Notes #

• Ensure your DocuSign integration key has the necessary permissions (e.g., signature scope) and that you’ve completed the one-time JWT authorization step (granting your app access to your DocuSign account).
• If you need to track signing status later, you can set up DocuSign Webhooks (Connect) to receive notifications, but this is optional for the initial send.

内容的提问来源于stack exchange，提问作者rlatagan