Monday 21 July 2014

How to Integrate Payzippy Payment gateway in Asp.net3.5 ?


Payzippy is one of the latest and Fast growing  payment gateway providing service in India(fom flipkart.com). They are providing SDK for PHP and Java but still no SDK for .NET platform. But Using Payzippy Rest API (support for JSON) , We can create Payment Integration in ASP.NET .

CS File

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text;
using System.Security.Cryptography;
public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
       protected Default2()
        {
            this.Init += Charging_Init;
            Main();
        }
       private void Charging_Init(object sender, EventArgs e)
        {
            this.EnableViewState = false;
        }
       private static string secretKey = "KEY_KEY_KEY_KEY_KEY";
        private static string generateSHA256(String input)
        {
            SHA256Managed crypt = new SHA256Managed();
            string hash = String.Empty;
            byte[] crypto = crypt.ComputeHash(Encoding.ASCII.GetBytes(input), 0, Encoding.ASCII.GetByteCount(input));
            foreach (byte bit in crypto)
            {
                hash += bit.ToString("x2");
            }
            return hash;
        }
        static string GenHash(Dictionary<string, string> chargingParams)
        {
            // Acquire keys and sort them.
            List<string> list = new List<string>(chargingParams.Keys);
            list.Sort();
            StringBuilder stringForHash = new StringBuilder();
            // Loop through keys.
            foreach (var key in list)
            {
                stringForHash.Append(chargingParams[key] + '|');
            }
            stringForHash.Append(secretKey);
            return generateSHA256(stringForHash.ToString());
        }
        public Dictionary<string, string> chargingParams;
        private void Main()
        {
            var currentTime = DateTime.Now.Ticks / TimeSpan.TicksPerMillisecond;

            this.chargingParams = new Dictionary<string, string>();
            chargingParams.Add("merchant_id", "test"); //Your MID issued by PayZippy.
            chargingParams.Add("buyer_email_address", "email@gmail.com"); // Email Address
            chargingParams.Add("merchant_transaction_id", "PAY_" + currentTime); //Your Transaction Id
            chargingParams.Add("transaction_type", "SALE"); //This is the default Value.
            chargingParams.Add("transaction_amount", "10000"); //Amount must be in paise. So, 1 Rupee= 100.
            chargingParams.Add("payment_method", "CREDIT"); // CREDIT,DEBIT,EMI,NET
            chargingParams.Add("bank_name", ""); //Bank Name required in case of EMI/NET.
            chargingParams.Add("emi_months", "0"); // Emi Months in case of EMI.
            chargingParams.Add("currency", "INR"); //INR is default.
            chargingParams.Add("ui_mode", "IFRAME"); //REDIRECT/IFRAME.
            chargingParams.Add("hash_method", "SHA256"); //MD5, SHA256
            chargingParams.Add("merchant_key_id", "payment"); //This is the default value.
            chargingParams.Add("timegmt", currentTime.ToString());
            chargingParams.Add("callback_url", "http://busnow.in/bus/default.aspx");
            chargingParams.Add("hash", GenHash(chargingParams));

            StringBuilder builder = new StringBuilder();
            builder.Append("https://www.payzippy.com/payment/api/charging/v1?");
            foreach (var entry in chargingParams)
            {
                builder.AppendFormat("{0}={1}&", entry.Key, entry.Value);
            }
            Console.WriteLine(builder.ToString());


        }

VIEW FILE(Code Design File)

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default2.aspx.cs" Inherits="Default2" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title></title>
</head>
<body>
    <form id="form1" action="https://www.payzippy.com/payment/api/charging/v1" method="post" runat="server">
        <div>
            <div>
                <%
                var url = "https://www.payzippy.com/payment/api/charging/v1?";
                foreach (var entry in chargingParams)
                {
                %>
                <input type="hidden" name="<%=entry.Key %>" value="<%=entry.Value %>" />
                <%
                url += entry.Key + "=" + entry.Value + "&";
                // do something with entry.Value or entry.Key
                }

                %>

                <input type="submit" />
            </div>
            <iframe width="500" height="500" src="<%=url %>"></iframe>
        </div>
    </form>
    <script>
        var x = document.getElementById("__VIEWSTATE");
        x.parentNode.removeChild(x);
    </script>
</body>

</html>

When you will Run you will get error message.


So first you have to register with PayZippy and get 

1. MID (merchant_id)
2. Secure key (used to determine hash)

3. Secure key id (merchant_key_id)


Then  place the value in the code and test :)

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