C#

Demo30.Properties.Settings d = new Demo30.Properties.Settings();
d.DayOfYear = DateTime.Now.DayOfYear;
d.Save();

HttpWebResponse response;
Stream resStream;
StreamReader objSR;
CookieContainer cookieContainer = new CookieContainer();
ASCIIEncoding encoding = new ASCIIEncoding();
HttpWebRequest request;
string sResponse;
string postData;
byte[]  data;
string UrlLogin;

//Upload Image Page *****************************************
//**************************************************************

UrlLogin = "http://localhost:63637/whois/test0.aspx";
string uploadfile = "C:\\fax\\pics\\7130570.jpg";
string fileFormName = "userfile";
string contenttype = "image/pjpeg";

postData = "?wm_flag=" + "0";
postData += ("&action=" + "process");
postData += ("&hi=" + "ft");
request = (HttpWebRequest)WebRequest.Create(UrlLogin + postData);
//request.Accept = "*/*";
request.KeepAlive = true;
request.CookieContainer = cookieContainer;
string boundary = "----------" + DateTime.Now.Ticks.ToString("x");
request.ContentType = "multipart/form-data; boundary=" + boundary;
request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)";
request.Method = "POST";
request.AllowAutoRedirect = true;

data = encoding.GetBytes(postData);

StringBuilder sb = new StringBuilder();
sb.Append("--"); sb.Append(boundary); sb.Append("\r\n"); sb.Append("Content-Disposition: form-data; name=\""); sb.Append(fileFormName); sb.Append("\"; filename=\"");
sb.Append(Path.GetFileName(uploadfile)); sb.Append("\""); sb.Append("\r\n"); sb.Append("Content-Type: "); sb.Append(contenttype); sb.Append("\r\n"); sb.Append("\r\n");
string postHeader = sb.ToString();
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(postHeader);

// Build the trailing boundary string as a byte array
// ensuring the boundary appears on a line by itself
byte[] boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary + "\r\n");

FileStream fileStream = new FileStream(uploadfile, FileMode.Open, FileAccess.Read);
long length = postHeaderBytes.Length + fileStream.Length + boundaryBytes.Length;// +data.Length;
//postData += ("&userfile=" + "C:\\Users\\tareq\\Desktop\\111111.jpg");

request.ContentLength = length;//data.Length;

Stream requestStream = request.GetRequestStream();
requestStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
byte[] buffer = new Byte[checked((uint)Math.Min(4096, (int)fileStream.Length))];
int bytesRead = 0;
while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
    requestStream.Write(buffer, 0, bytesRead);
requestStream.Write(boundaryBytes, 0, boundaryBytes.Length);

response = (HttpWebResponse)request.GetResponse();
resStream = response.GetResponseStream();
objSR = new StreamReader(resStream);
sResponse = objSR.ReadToEnd();