using System;

using System.IO;

using System.Net;

using System.Text;

using System.Web;

​

public class Program

{

    public static void Main()

    {

        string response = ApiUnclaimedDraft(

            true,

            "http://www.zimmer.com/content/dam/zimmer-web/documents/en-US/pdf/medical-professionals/reimbursement/product/Chondrofix_Sample_Insurance_Verification_Form.pdf",

            "request_signature",

            "Example Signer Name",

            "qqandhellosigndemo@gmail.com",

            new[]{

                new[]{ "QQ-Upload-ContactID", "abc123" },

                new[]{ "QQ-Upload-Filename", "Policy.pdf" }

            }

        );

        Console.WriteLine(response);

    }

​

    public static string ApiUnclaimedDraft(bool isTest, string fileUrl, string type, string name, string email, string[][] metadata)

    {

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://api.hellosign.com/v3/unclaimed_draft/create");

        request.Method = "POST";

​

        var postData = "test_mode=" + (isTest ? "1" : "0");

            postData += "&file_url[0]=" + HttpUtility.UrlEncode(fileUrl);

            postData += "&type=" + type;

            postData += "&signers[0][name]=" + HttpUtility.UrlEncode(name);

            postData += "&signers[0][email_address]=" + HttpUtility.UrlEncode(email);

        for(int i = 0; i < metadata.Length; i++)

        {

            postData += "&metadata[" + HttpUtility.UrlEncode(metadata[i][0]) + "]=" + HttpUtility.UrlEncode(metadata[i][1]);

        }

        var data = Encoding.ASCII.GetBytes(postData);

​

        request.ContentType = "application/x-www-form-urlencoded";

        request.ContentLength = data.Length;

        using (var stream = request.GetRequestStream())

        {

            stream.Write(data, 0, data.Length);

        }

​

        HttpWebResponse response = (HttpWebResponse)request.GetResponse();

        return new StreamReader(response.GetResponseStream()).ReadToEnd();

    }

}