How to implement paytm payment getway in ASP.NET C# website

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I have integrate paytm payment getway in my website.When i click the payTM button its not redirect to paymentgetway page,its just redirect to the callback url page.please help me to use this successfully in my website.

the code i have shown its written in gridview button RowCommand event.

What I have tried:

String merchantMid = "**removed**";
String merchantKey = "**removed**";
Dictionary<string, string> parameters = new Dictionary<string, string>();
parameters.Add("MID", merchantMid);
parameters.Add("CHANNEL_ID", "WEB");
parameters.Add("INDUSTRY_TYPE_ID", "Retail");
parameters.Add("WEBSITE", "WEB_STAGING");
parameters.Add("EMAIL", "**removed**");
parameters.Add("MOBILE_NO", "7777777777");
parameters.Add("CUST_ID", "CUST_BIB");
parameters.Add("ORDER_ID", "XXLALALAYY");
parameters.Add("TXN_AMOUNT", "10.00");
parameters.Add("CALLBACK_URL", "http://**removed**"); //This parameter is not mandatory. Use this to pass the callback url dynamically.

string checksum_S =CheckSum.generateCheckSum(merchantKey, parameters);
string paytmURL = "https://securegw-stage.paytm.in/theia/processTransaction?orderid="+parameters.FirstOrDefault(x => x.Key == "ORDER_ID").Value;

string outputHTML = "<html>";
outputHTML += "<head>";
outputHTML += "<title>Merchant Check Out Page</title>";
outputHTML += "</head>";
outputHTML += "<body>";
outputHTML += "<center><h1>Please do not refresh this page...</h1></center>";
outputHTML += "<form method='post' action='" + paytmURL + "' name='f1'>";
outputHTML += "<table border='1'>";
outputHTML += "<tbody>";
foreach (string key in parameters.Keys)
{
    outputHTML += "<input type='hidden' name='" + key + "' value='" + parameters[key] + "'>";
}
outputHTML += "<input type='hidden' name='CHECKSUMHASH' value='" + checksum_S + "'>";
outputHTML += "</tbody>";
outputHTML += "</table>";
outputHTML += "<script type='text/javascript'>";
outputHTML += "document.f1.submit();";
outputHTML += "</script>";
outputHTML += "</form>";
outputHTML += "</body>";
outputHTML += "</html>";

Response.Write(outputHTML);

Posted 15-Jan-19 0:13am

BIBASWAN

Updated 15-Jan-19 0:39am

F-ES Sitecore

v2

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F-ES Sitecore 15-Jan-19 6:43am

You'll find this easier if you store the order specific information like order id etc in the Session and the redirect the browser to a payment page and that payment page will have your outputHTML on it, getting order-specific details from the Session

BIBASWAN 15-Jan-19 10:44am

i have tried it.its not working too.
I have use their SANDBOX.payment page not showing but order is creating in the dashboard as pending.

Richard Deeming 18-Jan-19 11:43am

parameters.FirstOrDefault(x => x.Key == "ORDER_ID").Value

You can simplify that to:

parameters["ORDER_ID"]

If the dictionary doesn't contain the specified key, you'll get a KeyNotFoundException; with your current code, you'd get a blank value instead.

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OriginalGriff · Answer 1 · 2019-01-15T00:23:00

Never, ever, accept code from a insecure website to handle anything to do with real money.
You do not know who is giving you the code, you do not know what it does, you do not know that it places the monies correctly into the appropriate account, without passing the details to any third parties.

Only get such code from your payment gateway company - the scope for fraud otherwise is far too large. And remember, you personally could be liable for any monies lost if your action is seen to be negligent - which getting your code from a public forum would most certainly be!

Talk to them: they are used to it, and most are really helpful - remember, they don't get any commission until you are up and trading. Oh, and USE THEIR SANDBOX!