protected void Page_Load(object sender, EventArgs e)
    {
        string f;
        f = "http://www.bankofgreece.gr/en/sdds/SDDS-EXTERNAL-BALANCEOFPAYMENTS.xls";
        
        HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(f);
        HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();

        Stream respStream = myResponse.GetResponseStream();

        MemoryStream memStream = new MemoryStream();
        byte[] buffer = new byte[2048];

        int bytesRead = 0;
        do
        {
            bytesRead = respStream.Read(buffer, 0, buffer.Length);
            memStream.Write(buffer, 0, bytesRead);
        } while (bytesRead != 0);

        respStream.Close();
       
        FpSpread2.OpenExcel(memStream);
        memStream.Close();       
    }