using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Net; // needed for HttpWebRequest and HttpWebResponse

using System.IO; // needed for StreamReader and StreamWriter

namespace PaymentProcessor

{

public partial class PaymentDemo : System.Web.UI.Page

{

protected void Page_Load(object sender, EventArgs e)

{

if (!IsPostBack)

{

if (Session["OrderTotal"] == null)

{

Response.Redirect("PizzaOrder.aspx");

}

else

{

Decimal total = (Decimal)Session["OrderTotal"];

lblDisplay.Text = "You order's total is " + total.ToString("C2") + "<br />" +

"Enter your credit card information to complete the order.";

}

}

}

protected void btnProcessPurchase_Click(object sender, EventArgs e)

{

String ccNumber = txtCreditCardNumber.Text;

String ccExpirationDate = ddlMonth.SelectedValue + ddlYear.SelectedValue;

// By default, this sample code is designed to post to the test server for

// developer accounts: https://test.authorize.net/gateway/transact.dll

// for real accounts (even in test mode), please make sure that you are

// posting to: https://secure.authorize.net/gateway/transact.dll

String post_url = "https://test.authorize.net/gateway/transact.dll";

Dictionary<String, String> post_values = new Dictionary<String,String>();

// The API LoginID and Transaction Key must be replaced with valid values for your account.

post_values.Add("x_login", " YOUR_API_LOGIN_ID_FROM_AUTHORIZE.NET ");

post_values.Add("x_tran_key", "YOUR_TRANSACTION_KEY_FROM_AUTHORIZE.NET");

post_values.Add("x_delim_data", "TRUE");

post_values.Add("x_delim_char", "|");

post_values.Add("x_relay_response", "FALSE");

post_values.Add("x_type", "AUTH_CAPTURE");

post_values.Add("x_method", "CC");

//post_values.Add("x_card_num", "4111111111111111");

post_values.Add("x_card_num", ccNumber);

post_values.Add("x_exp_date", ccExpirationDate); //0115 is needed

post_values.Add("x_amount", Session["OrderTotal"].ToString());

post_values.Add("x_description", "Pascucci's Pizza Palace Order (" + DateTime.Now.Date.ToShortDateString() + " " + DateTime.Now.TimeOfDay.ToString() + ")");

post_values.Add("x_first_name", txtFName.Text);

post_values.Add("x_last_name", txtLName.Text);

post_values.Add("x_address", txtAddress.Text);

post_values.Add("x_state", ddlState.SelectedValue);

post_values.Add("x_zip", txtZipcode.Text);

// Additional fields can be added here as outlined in the AIM integration

// guide at: http://developer.authorize.net

// This section takes the input fields and their values from the Dictionary

// and converts them to the proper format for an HTTP Post Request.

// For example: "x_login=username&x_tran_key=a1B2c3D4"

String post_string = "";

foreach (KeyValuePair<String, String> field in post_values)

{

post_string = post_string + field.Key + "=" + HttpUtility.UrlEncode(field.Value) + "&";

}

// Remove the & character from the end of the string.

post_string = post_string.Substring(0, post_string.Length - 1);

// Create an HttpWebRequest object to communicate with the Authorize.net payment gateway

HttpWebRequest objRequest = (HttpWebRequest)WebRequest.Create(post_url);

objRequest.Method = "POST";

objRequest.ContentLength = post_string.Length;

objRequest.ContentType = "application/x-www-form-urlencoded";

// Send the Request with the POST data using a StreamWriter.

StreamWriter requestStream = new StreamWriter(objRequest.GetRequestStream());

requestStream.Write(post_string);

requestStream.Close();

// Get the Response and convert it to a string

HttpWebResponse objResponse = (HttpWebResponse)objRequest.GetResponse();

StreamReader responseStream = new StreamReader(objResponse.GetResponseStream());

String responseData = responseStream.ReadToEnd();

responseStream.Close();

// Break the response data into separate strings

String[] responseArray = responseData.Split(post_values["x_delim_char"].ToCharArray());

String responseCode = responseArray[0];

// Check the response code returned from processing the transaction

if (responseCode == "1") // Transaction Approved

{

ccNumber = ccNumber.Substring(ccNumber.Length - 4);

Decimal orderTotal = (Decimal)Session["OrderTotal"];

lblTransactionResults.Text = "Thank you for your business. The order was completed successfully. <br/><br/>" +

"Order Information: <br/>" +

Session["Name"] + "<br/>" +

Session["Address"] + "<br/>" +

Session["Phone"] +"<br/>" +

Session["Method"] + "<br/>" +

"Total: " + orderTotal.ToString("C2") + "<br/>" +

"------------------------------- <br/>" +

"Billing Information: <br/>" +

txtFName.Text + " " + txtLName.Text + "<br/>" +

txtAddress.Text + "<br/>" +

txtCity.Text + "<br/>" +

ddlState.SelectedValue + "<br/>" +

txtZipcode.Text + "<br/>" +

ddlCardType.SelectedValue + "<br/>" +

"Card #: **** **** **** " + ccNumber +

"<br/> <br/>";

}

else if (responseCode == "2") // Transaction Declined

{

lblTransactionResults.Text = "The credit card transaction was declined.<br />" +

"Please enter another credit card to complete this order.";

}

else if (responseCode == "3") // Transaction Error

{

lblTransactionResults.Text = "There was an error with the transaction.<br />" +

"Please review the credit card information you entered, <br />" +

"or enter another credit card to complete this order.";

}

else if (responseCode == "4") // Transaction Held For Review

{

lblTransactionResults.Text = "The credit card transaction is being held for review. <br />" +

"It may take some time to complete this transaction.";

}

else

{

lblTransactionResults.Text = "There was a problem with the credit card transaction. <br />An unknown response code was returned.";

}

}

}

}