problem with uploading image to server using httpwebrequest

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C#

ASP.NET

I try to upload an image to PHP server but still have problem
when I access url direct
http://images3.souq.com/upload_pict_url.phpi can send image
Please help!

private void button1_Click(object sender, EventArgs e)
{
    //using System.IO;//using System.Net;
    HttpWebResponse response;
    Stream resStream;
    StreamReader objSR;
    CookieContainer cookieContainer = new CookieContainer();
    ASCIIEncoding encoding = new ASCIIEncoding();
    HttpWebRequest request;
    string sResponse;
    string postData;
    string UrlLogin;


        try
        {
            UrlLogin = "http://images3.souq.com/upload_pict_url.php";
            //UrlLogin = "http://localhost:63637/whois/test0.aspx";
            string uploadfile = "C:\\fax\\pics\\7130570.jpg";
            string fileFormName = "userfile";
            string contenttype = "image/jpeg";//"image/pjpeg";

            request = (HttpWebRequest)WebRequest.Create(UrlLogin);
            //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;

            StringBuilder sb = new StringBuilder();

            string name1 = "wm_flag";
            string value1 = "0";

            sb.Append("--");
            sb.AppendLine(boundary);
            sb.AppendLine(string.Format("Content-Disposition: form-data; name=\"{0}\"", name1));
            sb.AppendLine();
            sb.AppendLine(value1);

            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;
            request.ContentLength = 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();
        }
        catch (Exception x) { }
}
private void button1_Click(object sender, EventArgs e)
{
    //using System.IO;//using System.Net;
    HttpWebResponse response;
    Stream resStream;
    StreamReader objSR;
    CookieContainer cookieContainer = new CookieContainer();
    ASCIIEncoding encoding = new ASCIIEncoding();
    HttpWebRequest request;
    string sResponse;
    string postData;
    string UrlLogin;


        try
        {
            UrlLogin = "http://images3.souq.com/upload_pict_url.php";
            //UrlLogin = "http://localhost:63637/whois/test0.aspx";
            string uploadfile = "C:\\fax\\pics\\7130570.jpg";
            string fileFormName = "userfile";
            string contenttype = "image/jpeg";//"image/pjpeg";

            request = (HttpWebRequest)WebRequest.Create(UrlLogin);
            //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;

            StringBuilder sb = new StringBuilder();

            string name1 = "wm_flag";
            string value1 = "0";

            sb.Append("--");
            sb.AppendLine(boundary);
            sb.AppendLine(string.Format("Content-Disposition: form-data; name=\"{0}\"", name1));
            sb.AppendLine();
            sb.AppendLine(value1);

            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;
            request.ContentLength = 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();
        }
        catch (Exception x) { }
}