using System;

using System.Collections.Generic;

using System.Text;

using System.Net;

using System.IO;

using System.Collections.Specialized;

namespace TechnetSamples

{

class Program

{

static void Main(string[] args)

{

string URLAuth = "https://technet.rapaport.com/HTTP/Authenticate.aspx";

WebClient webClient = new WebClient();

NameValueCollection formData = new NameValueCollection();

formData["Username"] = "myUser";

formData["Password"] = "myPassword";

byte[] responseBytes = webClient.UploadValues(URLAuth, "POST", formData);

string resultAuthTicket = Encoding.UTF8.GetString(responseBytes);

webClient.Dispose();

string URL = "http://technet.rapaport.com/HTTP/Upload/Upload.aspx?Method=file";

string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x");

System.Net.WebRequest webRequest = System.Net.WebRequest.Create(URL);

webRequest.Method = "POST";

webRequest.ContentType = "multipart/form-data; boundary=" + boundary;

string FilePath = "C:\\test.csv";

formData.Clear();

formData["ticket"] = resultAuthTicket;

formData["ReplaceAll"] = "false";

Stream postDataStream = GetPostStream(FilePath, formData, boundary);

webRequest.ContentLength = postDataStream.Length;

Stream reqStream = webRequest.GetRequestStream();

postDataStream.Position = ;

byte[] buffer = new byte[];

int bytesRead = ;

while ((bytesRead = postDataStream.Read(buffer, , buffer.Length)) != )

{

reqStream.Write(buffer, , bytesRead);

}

postDataStream.Close();

reqStream.Close();

StreamReader sr = new StreamReader(webRequest.GetResponse().GetResponseStream());

string Result = sr.ReadToEnd();

}

private static Stream GetPostStream(string filePath, NameValueCollection formData, string boundary)

{

Stream postDataStream = new System.IO.MemoryStream();

//adding form data

string formDataHeaderTemplate = Environment.NewLine + "--" + boundary + Environment.NewLine +

"Content-Disposition: form-data; name=\"{0}\";" + Environment.NewLine + Environment .NewLine + "{1}";

foreach (string key in formData.Keys)

{

byte[] formItemBytes = System.Text.Encoding.UTF8.GetBytes(string.Format(formDataHeaderTemplate,

key, formData[key]));

postDataStream.Write(formItemBytes, , formItemBytes.Length);

}

//adding file data

FileInfo fileInfo = new FileInfo(filePath);

string fileHeaderTemplate = Environment.NewLine + "--" + boundary + Environment.NewLine +

"Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"" +

Environment.NewLine + "Content-Type: application/vnd.ms-excel" + Environment.NewLine + Environment.NewLine;

byte[] fileHeaderBytes = System.Text.Encoding.UTF8.GetBytes(string.Format(fileHeaderTemplate,

"UploadCSVFile", fileInfo.FullName));

postDataStream.Write(fileHeaderBytes, , fileHeaderBytes.Length);

FileStream fileStream = fileInfo.OpenRead();

byte[] buffer = new byte[];

int bytesRead = ;

while ((bytesRead = fileStream.Read(buffer, , buffer.Length)) != )

{

postDataStream.Write(buffer, , bytesRead);

}

fileStream.Close();

byte[] endBoundaryBytes = System.Text.Encoding.UTF8.GetBytes("--" + boundary + "--");

postDataStream.Write(endBoundaryBytes, , endBoundaryBytes.Length);

return postDataStream;

}

}

}