C#
Bill Payment
1. creditTransferClass.cs
These four packages are required to be used.
Step 1. Re-use creditTransfer Class File to store content of the web response.
2. billPayment.aspx.cs
These 13 packages are required to be used.
Code in Common
(1). Check if user id and password is inside session. When the user id and password is inside user session, it will automatically populate into the user id and pin textbox, so that the user need not manually type his user id and password repeatedly.
Step 2. Store details entered by the user. If user id, password, and OTP exist in session, user need not enter again (refer to common stuff).
The reference data API "getBillingOrganizations" has been used as shown in the red box, and can be referred under Reference Data section.
Step 3. Create URL which will be post to the server. User inputs need to be stored in the class created, and serialize into JSON format. In this function, only header is needed.
Step 4. Post to the server, and store response. URL is sent using web request function, and a response will be send back from the server. The response need to be deserialized into the ‘billPayment’ class.
Step 5. Obtain error code. If error code is ‘010000’ which means invocation successful, populate attributes of the ‘creditTransfer’ class into the label. If error code is '010041', it means OTP has expired, and we will use the newOTP() function to prompt the user for the OTP again. Else, we will display the ErrorText and ErrorDetails.
The newOTP() function can be referred to under Common Stuff Section
Overview of creditTransferClass.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
namespace Demo
{
public class creditTransferClass
{
public CT_Content Content { get; set; }
}
public class CT_Content
{
public CT_ServiceResponse ServiceResponse { get; set; }
}
public class CT_ServiceResponse
{
public BalanceBefore BalanceBefore { get; set; }
public BalanceAfter BalanceAfter { get; set; }
public CT_ServiceRespHeader ServiceRespHeader { get; set; }
public TransactionID TransactionID { get; set; }
}
public class BalanceAfter
{
public string _content_ { get; set; }
}
public class BalanceBefore
{
public string _content_ { get; set; }
}
public class TransactionID
{
public string _content_ { get; set; }
}
public class CT_ServiceRespHeader
{
public string ErrorText { get; set; }
public string ErrorDetails { get; set; }
public string GlobalErrorID { get; set; }
}
}
Overview of billPayment.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DotNetOpenAuth.OAuth2;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;
using System.Collections.Specialized;
using System.Configuration;
using System.Net;
using System.IO;
using System.Windows.Forms;
using System.Data;
namespace Demo
{
public partial class Bill_Payment : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Session["userid"] != null)
{
txtUserID.Text = (string)Session["userid"];
txtPassword.Text = (string)Session["pin"];
}
var p = utilities.getBillingOrganizations();
ddlAccountTo.Items.Add("Please choose an organization");
for (int i = 0; i < p.Count(); i++)
{
ddlAccountTo.Items.Add(p[i].BillingOrgName);
}
}
protected void btnSend_Click(object sender, EventArgs e)
{
try
{
// take user input
string userID = txtUserID.Text;
Session["userid"] = userID;
string pin = txtPassword.Text;
Session["pin"] = pin;
string accountFrom = txtAccountFrom.Text;
string accountTo = ddlAccountTo.SelectedItem.Text;
var p = utilities.getBillingOrganizations();
ddlAccountTo.Items.Add("Please choose an organization");
for (int i = 0; i < p.Count(); i++)
{
if (accountTo == p[i].BillingOrgName)
{
accountTo = p[i].AccountID;
}
}
string transactionAmount = txtTransactionAmount.Text;
string transactionRefNumber = txtTransactionReferenceNumber.Text;
string narrative = txtNarrative.Text;
string otp;
if (Session["otp"] == null)
{
otp = "";
}
else
{
otp = Session["otp"].ToString();
}
// build header
var header = new HeaderJson();
header.userID = userID;
header.PIN = pin;
header.serviceName = "billPayment";
header.OTP = otp;
var headerJson = new HeaderJsonObject();
headerJson.Header = header;
string strHeader = JsonConvert.SerializeObject(headerJson);
// build content
var content = new ContentJson();
content.accountFrom = accountFrom;
content.accountTo = accountTo;
content.narrative = narrative;
content.transactionAmount = transactionAmount;
var contentObj = new ContentJsonObject();
contentObj.Content = content;
string strContent = JsonConvert.SerializeObject(contentObj);
string url = "http://tbankonline.com/SMUtBank_API/Gateway?Header=" + strHeader + "&Content=" + strContent;
// send request and store response
var webRequest = (HttpWebRequest)WebRequest.Create(url);
webRequest.ContentType = "application/json";
webRequest.Method = "POST";
var result = "";
var httpResponse = (HttpWebResponse)webRequest.GetResponse();
using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
{
result = streamReader.ReadToEnd();
}
// parse result into class
creditTransferClass ct = new creditTransferClass();
ct = JsonConvert.DeserializeObject<creditTransferClass>(result);
string ErrorID = ct.Content.ServiceResponse.ServiceRespHeader.GlobalErrorID?.ToString() ?? "-";
if (ErrorID == "010000")
{
txtBalanceBefore.Text = ct.Content.ServiceResponse.BalanceBefore._content_.ToString();
txtBalanceAfter.Text = ct.Content.ServiceResponse.BalanceAfter._content_.ToString();
txtTransactionID.Text = ct.Content.ServiceResponse.TransactionID._content_.ToString();
}
else if (ErrorID == "010041")
{
otp = utilities.newOTP();
Session["otp"] = otp;
}
else
{
lblTest.Text = ct.Content.ServiceResponse.ServiceRespHeader.ErrorText.ToString();
string errorMessage = ct.Content.ServiceResponse.ServiceRespHeader.ErrorDetails.ToString();
MessageBox.Show(errorMessage);
}
}
catch (Exception ex)
{
lblExceptionMsg.Text = ex.ToString();
}
}
}
}
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