Example of C# DocuSign SDK

//The MIT License

//Copyright( c) 2016- DocuSign, Inc. (https://www.docusign.com)

//Permission is hereby granted, free of charge, to any person obtaining a copy
//of this software and associated documentation files (the "Software"), to deal
//in the Software without restriction, including without limitation the rights
//to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
//copies of the Software, and to permit persons to whom the Software is
//furnished to do so, subject to the following conditions:

//The above copyright notice and this permission notice shall be included in all
//copies or substantial portions of the Software.

//THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
//IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
//FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
//AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
//LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
//OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
//SOFTWARE.
using DocuSign.eSign.Api;
using DocuSign.eSign.Model;
using DocuSign.eSign.Client;

namespace DocuSignSample
{
    class Program
    {
        static void Main(string[] args)
        {
            string username = "[EMAIL]";
            string password = "[PASSWORD]";
            string integratorKey = "[INTEGRATOR_KEY]";

            // initialize client for desired environment (for production change to www)
            ApiClient apiClient = new ApiClient("https://demo.docusign.net/restapi");
            Configuration.Default.ApiClient = apiClient;

            // configure 'X-DocuSign-Authentication' header
            string authHeader = "{\"Username\":\"" + username + "\", \"Password\":\"" + password + "\", \"IntegratorKey\":\"" + integratorKey + "\"}";
            Configuration.Default.AddDefaultHeader("X-DocuSign-Authentication", authHeader);

            // we will retrieve this from the login API call
            string accountId = null;

            /////////////////////////////////////////////////////////////////
            // STEP 1: LOGIN API
            /////////////////////////////////////////////////////////////////

            // login call is available in the authentication api
            AuthenticationApi authApi = new AuthenticationApi();
            LoginInformation loginInfo = authApi.Login();

            // parse the first account ID that is returned (user might belong to multiple accounts)
            accountId = loginInfo.LoginAccounts[0].AccountId;

            // Update ApiClient with the new base url from login call
            apiClient = new ApiClient(loginInfo.LoginAccounts[0].BaseUrl);

            /////////////////////////////////////////////////////////////////
            // STEP 2: CREATE ENVELOPE API
            /////////////////////////////////////////////////////////////////

            // create a new envelope which we will use to send the signature request
            EnvelopeDefinition envDef = new EnvelopeDefinition();
            envDef.EmailSubject = "[DocuSign C# SDK] - Sample Signature Request";

            // provide a valid template ID from a template in your account
            envDef.TemplateId = "[TEMPLATE_ID]";

            // assign recipient to template role by setting name, email, and role name.  Note that the
            // template role name must match the placeholder role name saved in your account template.
            TemplateRole tRole = new TemplateRole();
            tRole.Email = "[SIGNER_EMAIL]";
            tRole.Name = "[SIGNER_NAME]";
            tRole.RoleName = "[ROLE_NAME]";

            // add the roles list with the our single role to the envelope
            List<TemplateRole> rolesList = new List<TemplateRole>() { tRole };
            envDef.TemplateRoles = rolesList;

            // set envelope status to "sent" to immediately send the signature request
            envDef.Status = "sent";

            // |EnvelopesApi| contains methods related to creating and sending Envelopes (aka signature requests)
            EnvelopesApi envelopesApi = new EnvelopesApi();
            EnvelopeSummary envelopeSummary = envelopesApi.CreateEnvelope(accountId, envDef);
        }
    }
}