Upload file through c# using JSON request and RestSharp

This was a fight... In the end I discovered two different ways of solving this problem. The irony of it, as so many of coding problems, was that all i had to do was setting the right parameters in first place...Just one missing parameter cost me more than 4 hours..

Both detailed below :

1 - Use RestSharp (the total field shouldn't be there, and the ispaperduplicate field was missing)

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using RestSharp;using System.Web.Script.Serialization;using System.IO;using System.Net;namespace RonRestClient{        public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            string path = @"C:\filename2.pdf";            //localhost settings            string requestHost = @"http://localhost:3000/receipts";            string tagnr = "p94tt7w";            string machinenr = "2803433";            string safe_token = "123";            // Do it with RestSharp            templateRequest req = new templateRequest();            req.receipt = new templateRequest.Receipt(tagnr);            req.machine = new templateRequest.Machine(machinenr, safe_token);            var request = new RestRequest("/receipts", Method.POST);            request.AddParameter("receipt[tag_number]", tagnr);            request.AddParameter("receipt[ispaperduplicate]", 0);            request.AddParameter("machine[serial_number]", machinenr);            request.AddParameter("machine[safe_token]", safe_token);            request.AddFile("receipt[receipt_file]", File.ReadAllBytes(path), Path.GetFileName(path), "application/octet-stream");            // Add HTTP Headers            request.AddHeader("Content-type", "application/json");            request.AddHeader("Accept", "application/json");            request.RequestFormat = DataFormat.Json;            //set request Body            //request.AddBody(req);             // execute the request            //calling server with restClient            RestClient restClient = new RestClient("http://localhost:3000");            restClient.ExecuteAsync(request, (response) =>            {                if (response.StatusCode == HttpStatusCode.OK)                {                    //upload successfull                    MessageBox.Show("Upload completed succesfully...\n" + response.Content);                }                else                {                    //error ocured during upload                    MessageBox.Show(response.StatusCode + "\n" + response.StatusDescription);                }            });        }    }}

2 - Use FileStream with HttpWebRequest (thank you Clivant)

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using RestSharp;using System.Web.Script.Serialization;using System.IO;using System.Net;namespace RonRestClient{    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();        }        private void button1_Click(object sender, EventArgs e)        {            string path = @"C:\Projectos\My Training Samples\Adobe Sample\RBO1574.pdf";            //localhost settings            string requestHost = @"http://localhost:3000/receipts";            string tagnr = "p94tt7w";            string machinenr = "2803433";            string safe_token = "123";            FileStream fs1 = File.OpenRead(path);            long filesize = fs1.Length;            fs1.Close();            // Create a http request to the server endpoint that will pick up the            // file and file description.            HttpWebRequest requestToServerEndpoint =                (HttpWebRequest)WebRequest.Create(requestHost);            string boundaryString = "FFF3F395A90B452BB8BEDC878DDBD152";            string fileUrl = path;            // Set the http request header \\            requestToServerEndpoint.Method = WebRequestMethods.Http.Post;            requestToServerEndpoint.ContentType = "multipart/form-data; boundary=" + boundaryString;            requestToServerEndpoint.KeepAlive = true;            requestToServerEndpoint.Credentials = System.Net.CredentialCache.DefaultCredentials;            requestToServerEndpoint.Accept = "application/json";            // Use a MemoryStream to form the post data request,            // so that we can get the content-length attribute.            MemoryStream postDataStream = new MemoryStream();            StreamWriter postDataWriter = new StreamWriter(postDataStream);            // Include value from the tag_number text area in the post data            postDataWriter.Write("\r\n--" + boundaryString + "\r\n");            postDataWriter.Write("Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}",                                    "receipt[tag_number]",                                    tagnr);            // Include ispaperduplicate text area in the post data            postDataWriter.Write("\r\n--" + boundaryString + "\r\n");            postDataWriter.Write("Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}",                                    "receipt[ispaperduplicate]",                                    0);            // Include value from the machine number in the post data            postDataWriter.Write("\r\n--" + boundaryString + "\r\n");            postDataWriter.Write("Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}",                                    "machine[serial_number]",                                    machinenr);            // Include value from the machine token in the post data            postDataWriter.Write("\r\n--" + boundaryString + "\r\n");            postDataWriter.Write("Content-Disposition: form-data; name=\"{0}\"\r\n\r\n{1}",                                    "machine[safe_token]",                                    safe_token);            // Include the file in the post data            postDataWriter.Write("\r\n--" + boundaryString + "\r\n");            postDataWriter.Write("Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n"                                    + "Content-Length: \"{2}\"\r\n"                                    + "Content-Type: application/octet-stream\r\n"                                    + "Content-Transfer-Encoding: binary\r\n\r\n",                                    "receipt[receipt_file]",                                    Path.GetFileName(fileUrl),                                    filesize);            postDataWriter.Flush();            // Read the file            FileStream fileStream = new FileStream(fileUrl, FileMode.Open, FileAccess.Read);            byte[] buffer = new byte[1024];            int bytesRead = 0;            while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)            {                postDataStream.Write(buffer, 0, bytesRead);            }            fileStream.Close();            postDataWriter.Write("\r\n--" + boundaryString + "--\r\n");            postDataWriter.Flush();            // Set the http request body content length            requestToServerEndpoint.ContentLength = postDataStream.Length;            // Dump the post data from the memory stream to the request stream            Stream s = requestToServerEndpoint.GetRequestStream();            postDataStream.WriteTo(s);            postDataStream.Close();        }    }}