How do I call Pay U Money Server through WCF? - wcf

Question

i am creating a wcf service for Pay u Money I wrote same code like asp.net c# for Pay u Money, but using HttpWebRequest I'm facing this error:
SORRY! We were unable to process your payment
Same code I tried in simple asp.net c# and there working fine. Here I don't know what goes wrong, how could I solve this?
enter code here
public PayUMoneyModel PayUMoney(PayUMoneyModel Data)
{
PayUMoneyModel objPayUMoneyModel = new PayUMoneyModel();
action1 = ConfigurationManager.AppSettings["PAYU_BASE_URL"] +
"/_payment";
try
{
string[] hashVarsSeq;
string hash_string = string.Empty;
if (string.IsNullOrEmpty(Data.txnid)) // generating txnid
{
Random rnd = new Random();
string strHash = Generatehash512(rnd.ToString() +
DateTime.Now);
txnid1 = strHash.ToString().Substring(0, 20);
}
else if(Data.txnid!=null)
{
txnid1 = Data.txnid;
}
Data.txnid = txnid1;
Data.key= ConfigurationManager.AppSettings["MERCHANT_KEY"];
string salt= ConfigurationManager.AppSettings["SALT"];
System.Collections.Hashtable data = new System.Collections.Hashtable();
data.Add("key", Data.key);
data.Add("txnid", Data.txnid);
string AmountForm = Convert.ToDecimal(Data.amount).ToString("g29");// eliminating trailing zeros
//amount.Text = AmountForm;
data.Add("amount", 1.00);
data.Add("firstname", Data.firstname);
data.Add("email", Data.email);
data.Add("phone", Data.phone);
data.Add("productinfo", Data.productinfo);
data.Add("surl", Data.surl);
data.Add("furl", Data.furl);
data.Add("lastname", Data.lastname);
data.Add("curl", Data.curl);
data.Add("address1", Data.address1);
data.Add("address2", Data.address2);
data.Add("city", Data.city);
data.Add("state", Data.state);
data.Add("country",Data.country);
data.Add("zipcode", Data.zipcode);
data.Add("udf1", Data.udf1);
data.Add("udf2", Data.udf2);
data.Add("udf3", Data.udf3);
data.Add("udf4", Data.udf4);
data.Add("udf5", Data.udf5);
data.Add("pg", Data.pg);
data.Add("service_provider", "payu_paisa");
hash_string = Data.key + "|" + Data.txnid + "|" + AmountForm + "|" + Data.productinfo+ "|" + Data.firstname + "|" + Data.email + "|||||||||||" + salt;
string hash = Generatehash512(hash_string);
data.Add("hash", hash);
data.Add("abc", hash_string);
string strForm = PreparePOSTForm(action1, data);
if (strForm != "")
{
var httpWebRequest = (HttpWebRequest)WebRequest.Create(action1);
// httpWebRequest.ContentType = "text/html";
httpWebRequest.ContentType = "application/x-www-form-urlencoded";
httpWebRequest.Method = "POST";
httpWebRequest.ContentLength = strForm.Length;
string Json = "";
using (var streamWriter = new StreamWriter(httpWebRequest.GetRequestStream()))
{
streamWriter.Write(strForm,0,strForm.Length);
streamWriter.Flush();
streamWriter.Close();
var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
Json = streamReader.ReadToEnd().Replace(";", "");
}
}
HttpContext.Current.Response.Write(Json);
}
}
catch(Exception ex)
{
throw ex;
}
return objPayUMoneyModel;
}
this is my Post Form Method
private string PreparePOSTForm(string url, System.Collections.Hashtable data) // post form
{
//Set a name for the form
string formID = "PostForm";
//Build the form using the specified data to be posted.
StringBuilder strForm = new StringBuilder();
strForm.Append("<form id=\"" + formID + "\" name=\"" +
formID + "\" action=\"" + url +
"\" method=\"POST\">");
foreach (System.Collections.DictionaryEntry key in data)
{
strForm.Append("<input type=\"hidden\" name=\"" + key.Key +
"\" value=\"" + key.Value + "\">");
}
strForm.Append("</form>");
//Build the JavaScript which will do the Posting operation.
StringBuilder strScript = new StringBuilder();
strScript.Append("<script language='javascript'>");
strScript.Append("var v" + formID + " = document." +
formID + ";");
strScript.Append("v" + formID + ".submit();");
strScript.Append("</script>");
//Return the form and the script concatenated.
//(The order is important, Form then JavaScript)
return strForm.ToString() + strScript.ToString();
}
this is my key and salt provided by Payumoney website:-
Key:-rjQUPktU
Salt:-e5iIg1jwi8