FreeMoney.FreeMoneyModule.ShowUserPage C# (CSharp) Method

        private Hashtable ShowUserPage(Hashtable request, string baseUrl, FreeMoneyTransaction txn, string error_message)
        {
            string url = m_ppprotocol+"://" + m_ppurl + m_pprequesturi+"?cmd=_xclick" + "&business=" +
                HttpUtility.UrlEncode (txn.SellersEmail) + "&item_name=" + HttpUtility.UrlEncode (txn.Description) +
                    "&item_number=" + HttpUtility.UrlEncode (txn.TxID.ToString ()) + "&amount=" +
                    HttpUtility.UrlEncode (String.Format ("{0:0.00}", ConvertAmountToCurrency (txn.Amount))) +
                    "&page_style=" + HttpUtility.UrlEncode ("Paypal") + "&no_shipping=" +
                    HttpUtility.UrlEncode ("1") + "&return=" + HttpUtility.UrlEncode ("http://" + baseUrl + "/") +
                    "&cancel_return=" + HttpUtility.UrlEncode ("http://" + baseUrl + "/") + "&notify_url=" +
                    HttpUtility.UrlEncode ("http://" + baseUrl + "/ppipn/") + "&no_note=" +
                    HttpUtility.UrlEncode ("1") + "&currency_code=" + HttpUtility.UrlEncode (m_gridCurrencyCode) + "&lc=" +
                    HttpUtility.UrlEncode ("US") + "&bn=" + HttpUtility.UrlEncode ("PP-BuyNowBF") + "&charset=" +
                    HttpUtility.UrlEncode ("UTF-8") + "";

            // The URL for Bitcoin will be modelled on the FreeMoney one.
            // This will allow us use a common Bitcoin page handler whether or not we've hacked this.
            // It'll just throw away arguments it doesn't need.
            //string btcurl = m_btcprotocol+"://" + m_btcurl + m_btcrequesturi+"?cmd=_xclick";
            string btcurl = "/btcgo/";

            string btcfields = ""
            + "<input type=\"hidden\" name=\"txn\" value=\""+HttpUtility.HtmlEncode (txn.TxID.ToString ())+"\" />"
            + "<input type=\"hidden\" name=\"btc_session_id\" value=\""+HttpUtility.HtmlEncode ( GetSessionKey( txn.From ).ToString() )+"\" />";

            Dictionary<string, string> replacements = new Dictionary<string, string> ();
            replacements.Add ("{ITEM}",  HttpUtility.HtmlEncode(txn.Description));
            replacements.Add ("{AMOUNT}", HttpUtility.HtmlEncode(String.Format ("{0:0.00}", ConvertAmountToCurrency (txn.Amount))));
            replacements.Add ("{AMOUNTOS}", HttpUtility.HtmlEncode(txn.Amount.ToString ()));
            replacements.Add ("{CURRENCYCODE}", HttpUtility.HtmlEncode(m_gridCurrencyText));
            replacements.Add ("{BILLINGLINK}", url);
            replacements.Add ("{BTCBILLINGLINK}", btcurl);
            replacements.Add ("{BTCBILLINGHIDDENFIELDS}", btcfields);
            replacements.Add ("{OBJECTID}", HttpUtility.HtmlEncode(txn.ObjectID.ToString ()));
            replacements.Add ("{SELLEREMAIL}", HttpUtility.HtmlEncode(txn.SellersEmail));
            replacements.Add ("{BTC_ERRORS}",  error_message);

            string template;

            try {
                template = File.ReadAllText ("freemoney-template.htm");
            } catch (IOException) {
                template = "Error: freemoney-template.htm does not exist.";
                m_log.Error ("[FreeMoney] Unable to load template file.");
            }

            foreach (KeyValuePair<string, string> pair in replacements) {
                template = template.Replace (pair.Key, pair.Value);
            }

            Hashtable reply = new Hashtable ();

            reply["int_response_code"] = 200;
            // 200 OK
            reply["str_response_string"] = template;
            reply["content_type"] = "text/html";

            return reply;
        }