Online Payments Using PayPal- Integration with ASP.NET

BangaruBabu
Posted by in ASP.NET category on for Beginner level | Views : 242850 red flag
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Abstarct: In this article I am going to explain Step by Step Procedure, about integrating PayPal account with asp.net.
Case Study: If any of the web application need to collect money from their customers, the best and ideal solution is to open a Paypal Merchant account by using valid email id and respective Credit card which belongs to their individual accounts.
PayPal is an e-commerce business which allows payments and money transfers via Internet. It is an alternative to traditional paper methods such as checks and money orders


 Download source code for Online Payments Using PayPal- Integration with ASP.NET

Abstarct: In this article I am going to explain Step by Step Procedure, about integrating PayPal account with asp.net.

Case Study: If any of the web application need to collect money from their customers, the best and ideal solution is to open a Paypal Merchant account by using valid email id and respective Credit card which belongs to their individual accounts.

PayPal is an e-commerce business which allows payments and money transfers via Internet. It is an alternative to traditional paper methods such as checks and money orders.

Here I don’t want to give more explanation on Paypal accounting standards and money transfers, why because it is a self explanatory resource which is available @ www.paypal.com for more information.

Even we can integrate any web application not only PayPal, we had also third party vendors like CCAvenue (http://www.ccavenue.com/), PayByWeb (http://www.paybyweb.com/), ABC Payments (http://www.abcpayments.com/),EBS(www.ebs.in),Web link India (www.weblinkindia.net),Times Of Money(http://www.timesofmoney.com/direcpay/jsp/home.jsp) ,Pro Pay(www.propay.com) ,World Pay (www.worldpay.com) ,Data Cash(www.datcash.com).e.t.c. But in my real application I used PayPal API for receiving Money from Customers.

Hands on Experiment:

In this  experiment I will give total explanation and step by step procedure about integrating Paypal to asp.net website –which I did in my initial stages of development career. At that time the word online payments hampers my Head Like anything, after a long research on Google and Paypal website-I decided my self, we can integrate Paypal just like a kids Play.

 Steps to integrate Paypal API to ASP.NET:

Step-1) Create Paypal Merchant Account @ www.paypal.com using valid Mail Account

Step-2) Provide Debit or Credit Card No and Its Type.

Step-3) Develop ASP.NET Page According To Your Requirement

Step-4) Integrate API by Passing Website Variables as a Input to PayPal Account Using our Mail Account writing customized Business logic

 

Step-1) Create Paypal Merchant Account @ www.paypal.com using valid Mail Account :

Open www.payapal.com and register with valid Credentials as depicted below, here I used bangarubau.p@gmail.com mail account for receiving amounts, keep remember that this id will use full @ the time of integrating api with Business logic and registered with Business name as BangaruBabu’s Digital Shoppy. When the time I redirected from ASP.NET Page to PayPal Account Business Name will be displayed @ the top of the Paypal web page by using Mail Account I created.



After creating Account, the account internals will be created to Individual



In The above screen @ right hand side in Notifications option, I marked as red circle, in that link provide bank credit and debit card numbers. Left hand side Green Circle indicates money payments and Receivables information was provided. Black Color circle link indicates account status Verification option.

 Step-2) Provide Debit or Credit Card No and Its Type

 

Step-3) Develop ASP.NET Page According To Requirement

I considered online shopping Scenario by displaying electronic Gadgets on Asp.Net Web Page. In this Step I designed a Page by Using Three Images (Xbox, Bluetooth Headset,) three Labels to display the Currency on Web Page to the respective Electronic Gadgets and three Image Buttons.


Step-4) Integrate API by Passing Website Variables as an Input to PayPal Account using our Mail Account writing customized Business logic.

Before going to write Business logic we just discuss Paypal API Link and its Parameters

Paypal API

https://www.paypal.com/cgi-bin/webscr?cmd=_cart&business=mailid@server.com&businessname &item_name=Welcome Back&amount=10&currency=USD&add=5

 

The above mentioned URL is a Constructive link to get the values from the website to Paypal Gateway. In the URL bold Letters indicates predefined parameters .Following are the some of the Parameter values and their descriptions




Now add Class [RedirectToPaypal.cs] File in App_Code Folder. Write One Static Method by taking only two [as per as your requirement you can take n-no of parameters to the function with predefined variable names mentioned in the above table] dynamic parameters. Here I am using single item Transaction for Shopping Scenario. Write Method as Follows in C# Language to construct a link.

public static string  getItemNameAndCost(string itemName, string itemCost)


    {

        //Converting String Money Value Into Decimal



       decimal price = Convert.ToDecimal(itemCost);



        //declaring empty String



       string returnURL = "";



       returnURL +="https://www.paypal.com/xclick/business=bangarubabu.p@gmail.com";



        //PassingItem Name as dynamic



       returnURL +="&item_name="+itemName;



        //AssigningName as Statically to Parameter



       returnURL += "&first_name"+ "Raghunadh Babu";



       //AssigningCity as Statically to Parameter



       returnURL += "&city"+ "Hyderabad";



       //Assigning State as Statically to Parameter



       returnURL += "&state"+ "Andhra Pradesh";



       //Assigning Country as Statically to Parameter



       returnURL += "&country" + "India";



        //Passing Amount as Dynamic



       returnURL += "&amount=" + price;



       //Passing Currency as your



       returnURL += "&currency=USD";



       //retturn Url if Customer wants To return to Previous Page



       returnURL += "&return=http://bangarubabupureti.spaces.live.com";



       //retturn Url if Customer Wants To Cancel the Transaction



       returnURL += "&cancel_return=http://bangarubabupureti.spaces.live.com";



       return returnURL;



    }



 



Write Code Under Image Butons



protected void ImageButton1_Click(object sender, ImageClickEventArgs e)



    {



        string iName="XBox";



        string responseURL = RedirectToPaypal.getItemNameAndCost(iName,
lblxbox.Text);





        Response.Redirect(responseURL);      



    }



    protected void ImageButton4_Click(object sender, ImageClickEventArgs e)

  {



        string iName = "Philips Mobile";



        string responseURL = RedirectToPaypal.getItemNameAndCost(iName,
lblphone.Text);



        Response.Redirect(responseURL);


     }



    protected void ImageButton5_Click(object sender, ImageClickEventArgs e)


    {

        string iName = "BlueTooth HeadSet";


        string responseURL = RedirectToPaypal.getItemNameAndCost(iName,

lblbluetooth.Text);





        Response.Redirect(responseURL);     



    }

Now run and Click On shop Now Paypal Button under Xbox, it will automatically Redirects to Paypal Web Site with your given input, the customer will pay according to your Specifications in the Website


Here I used only _xclick command, if you want to add shopping cart or donations or subscriptions, you can customize application according to your requirement.

 

My Reference:

http://www.payapal.com

 

Conclusion:

In this article I covered all the aspects of the online Payment using PAYPAL gateway except Shopping Cart, even it is very easy. For more information check http://www.payapal.com.

I hope this article definitely helps.


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About the Author

BangaruBabu
Full Name: BangaruBabu Pureti
Member Level:
Member Status: Member
Member Since: 5/12/2010 2:15:06 AM
Country: India
BangaruBabu Pureti http://bangarubabupureti.spaces.live.com/
http://bangarubabupureti.spaces.live.com
Microsoft Technology Enthusiast

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Comments or Responses

Posted by: Parasu on: 6/24/2010
Babu,

Excellent article, but im not able to view the images that you added in this article.
Posted by: Kullayappa on: 6/24/2010
Its very clear to understand for beginners and the way u have presented is good
Posted by: Kullayappa on: 6/24/2010
Good
Posted by: Vuyiswamb on: 6/25/2010
Very nice Article with good info on it. but you did not show all the info. A newbie can follow article. give your readers more , screenshots and namespaces to use. but it is a good article after all. Keep up the good work.

Thank you for posting at dotnetfunda

Vuyiswa Maseko
Posted by: Akiii on: 8/12/2011 | Points: 25
good article...
keep posting..

Thanks and Regards
Akiii
Posted by: Hareesh on: 2/17/2012 | Points: 25
hi
Really very good article. you give a very good example with paypal


thanks®ards
Hareesh.A
Posted by: Prasuna on: 4/21/2012 | Points: 25
Hi,

Thank you for posting this article..its nice., but the thing here is if we get the error how come it should be displayed in our website. i mean to say is if the cardno is not valid or if the user is not genuine and will they reply us the result for cancelling the transaction. ie., why it is cancelled, the reason in query string will be passed to our url. here returncancel is for what exactly..

If you provide us the possibilities of error regarding payment.. with coding..it will be better to understand.

Thanks in advance.
Posted by: Arshesander on: 4/25/2012 | Points: 25
hello, can anybody show how to put the logo of business in paying paypal?
Posted by: Anilbabu.M on: 8/16/2012 | Points: 25
GOOD ARTICLE


Posted by: Anilbabu.M on: 8/16/2012 | Points: 25
GOOD ARTICLE


Posted by: Anilbabu.M on: 8/21/2012 | Points: 25
I am a Fresher ,
Tell me another way to integrate paypal asp.net,
How to test paypal account ony ,
I am not enter Account number,

The product values Comming from database display Gridview And after that select Any one produce & Editmode Enter Product QTY Then submitThen gofor Submit details


Posted by: Modipadi33 on: 3/10/2014 | Points: 25
hi, thank you so much this was a very helpful article indeed...
Posted by: Akiii on: 3/31/2014 | Points: 25
Thanks

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