Download signed documents with a date range

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using Silanis.ESL.SDK;
using Silanis.ESL.SDK.Builder;
using System.Diagnostics;
using System.IO;

namespace DownloadDocumentsDateRange
{
    class DownloadDocuments
    {
        //replace apiKey placeholder with your own value
        private static String apiUrl = "https://sandbox.e-signlive.com/api";
        private static String apiKey = "your_api_key";

        public static void Main(string[] args)
        {
            EslClient eslClient = new EslClient(apiKey, apiUrl);

            //starting point to retrieve completed packages
            int index = 1;

            //Retrieve first 50 completed packages. Packages are returned as a page from eSignLive.
            Page completed_packages = eslClient.PackageService.GetUpdatedPackagesWithinDateRange(DocumentPackageStatus.COMPLETED, new PageRequest(index, 50), DateTime.Today.AddDays(-7), DateTime.Now);

            while (index = completed_packages.TotalElements)
            {
                foreach (DocumentPackage package in completed_packages)
                {
                    //for each completed package, get the package id to download signed documents.
                    Debug.WriteLine("Downloading package: " + package.Id + "...");
                    byte[] zipContent = eslClient.DownloadZippedDocuments(package.Id);
                    File.WriteAllBytes(Directory.GetCurrentDirectory() + "/package-documents-" + package.Id.ToString() + ".zip", zipContent);
                    index++;
                    Thread.Sleep(1000);
                }
                //Retrieve next 50 packages
                completed_packages = eslClient.PackageService.GetUpdatedPackagesWithinDateRange(DocumentPackageStatus.COMPLETED, new PageRequest(index, 50), DateTime.Today.AddDays(-7), DateTime.Now);
            }
            Debug.WriteLine("Downloaded All File!");
        }
    }
}