using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DocuSign.eSign.Api;
using DocuSign.eSign.Model;
using DocuSign.eSign.Client;

namespace WebApplication4
{
    public partial class About : System.Web.UI.Page
    {
        protected void Page_Load(object sender, EventArgs e)
        {
            SendAPiCall();
        }
        public void SendAPiCall()
        {
            string username = "[*]";
            string password = "[*]";
            string integratorKey = "[*]";

            ApiClient apiClient = new ApiClient("https://demo.docusign.net/restapi");
            Configuration.Default.ApiClient = apiClient;

            var config = new Configuration(apiClient);
            var authApi = new AuthenticationApi(config);


            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
            LoginInformation loginInfo = authApi.Login();

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