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Making DSLs in F#

by Dmitri Nеstеruk

Let's create a simple project estimation DSL using F#!

Remote Posting To PayPal

by ortund

Allow purchases via PayPal on your website

Extending the PayPal .NET API to Detect Errors

by jnegron215

This short tip will show you how to extend PayPal's .NET API by adding new members to their objects and page-level functions that will help provide a smooth error-handling experience.

Add Multiple PayPal "Buy Now" Buttons to an ASP.NET Form

by echokilo

A simple tip to avoid the pain caused by PayPal providing code snippets for buttons each in its own form tag

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Integrating with PayPal smoothly

by Michael Haephrati

How to easily integrate and interface with PayPal Express Checkout API from a Windows c++ application

PayFlowPro Hosted Checkout Pages in PHP

by Visveswaraiah

PayFlowPro Hosted Checkout page is a payment service from PayPal that helps you meet PCI compliance.

Extending the PayPal .NET API to Detect Errors

by jnegron215

This short tip will show you how to extend PayPal's .NET API by adding new members to their objects and page-level functions that will help provide a smooth error-handling experience.

Easily implementing your own online shop

by Christoph Buenger, DaSpors

How to easily build an online shop with the Scavix PHP Web Development Framework.

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PayPal

Pay Pal Bad request Error

7 Aug 2017 by 4d.kh4n

I ran in to a similar problem a while back .. after debugging my code i found out that the transaction that i was making was logically wrong.. the subtotal was off be $0.25 and paypal server saw it and refused to process it, and gave me 400 bad request

i want to integrate paypal account with my shopping cart ?

31 Jul 2014 by _Amy

Refer the articles below to do the same:How to integrate PayPal in Asp.Net[^]Introduction to PayPal for C# - ASP.NET developers[^]Use of the PayPal payment system in ASP.NET[^]Use of the PayPal payment system in ASP.NET[^][Update]Read Paypal Documentation[^] and Development &...

How to integrate Online Payment system in a website

30 Apr 2012 by _Zorro_

Hi,You could browse their site in order to get an answer to your question...PayPal - Get Paid[^]Or even on CodeProject:Use of the PayPal payment system in ASP.NET[^]Introduction to PayPal for C# - ASP.NET developers[^]Hope it helps

Instant Payment to User with PayPal

20 Apr 2012 by Abhinav S

You can start with the PayPal API as described here[^].

How to Implement paypal for the online shopping website ?

26 Aug 2014 by Abhinav S

Try the following -PayPal Gateway Integration in ASP.NET[^]Introduction to PayPal for C# - ASP.NET developers[^]Video - How to integrate Paypal into ASP.Net [^]How to integrate PayPal in Asp.Net[^]Paypal Integration Code: Using ASP.Net / C#[^]

Paypal Recurrent payments - invalid token

13 Sep 2011 by abiruban

Haiia'm trying to integrate a website with the express checkout and recurrent payments. The express checkout works fine, I mean, we redirect to paypal, then back to our site where the payment is confirmed and everything works like a charm.But when trying to integrate the...

Paypal Recurrent payments - invalid token

13 Sep 2011 by abiruban

MaulikDusara2....

Paypal Recurrent payments - invalid token

17 Sep 2011 by abiruban

hiit's workinghttp://forums.asp.net/t/1719516.aspx/1?Paypal+Recurrent+payments+invalid+token[^]

Paypl response Error "cannot redirect after http headers have been sent"

19 Mar 2014 by Aditya Magotra

Hello All,I have integrated paypal to merchant site & when clicks on pay now button on paypal site :- Server cannot append header after HTTP headers have been sent.at System.Web.HttpResponse.AppendHeader(String name, String value)This scenario comes into picture when user clicks on...

How to give my costumers way to receive visa card & paypal from users with php

9 Apr 2015 by Ahmed Al-hadi

i build a website that users could sell their stuff and i want to active visa card & paypal payments to make buyers able to send money to my costumers automatically with phpall that without saving their info in my database like visa card numbers

How Can I Checkout With Paypal In Asp.Net C#

8 May 2014 by akashjg

Hellow,In the web site that i implement, using ASP.NET and C# i finish my shopping card and i want to integrate a paypal checkout i read many things and i found them very confusingon paypal.developer.com,Do you know how can i start or has anyone any example of how to use paypal...

how to specify notify url and return url in refund post request in Paypal

30 Jun 2015 by Ami_Modi

I am using refund API of Paypal. It is going well but it does not call my INP and neither it gets return to my site.My code is as follows: "" + "

The type 'paypal.basepaypalservice' is defined in an assembly that is not referenced. You must add a reference to assembly 'paypalcoresdk, version=1.4.1.0, culture=neutral, publickeytoken=null'

25 May 2016 by Amresh Bahadur Singh

Hi ,I am faceing some problem in paypal integration in asp.net ,Problem is :The type 'PayPal.BasePayPalService' is defined in an assembly that is not referenced. You must add a reference to assembly 'PayPalCoreSDK, Version=1.4.1.0, Culture=neutral, PublicKeyToken=null'.What I have...

Invalid HTTP response the underlying connection was closed

28 May 2016 by Amresh Bahadur Singh

i facing some problem in Paypal integration,i find error of this block mainly last line of code on debug time .ReceiverList sl = new ReceiverList(); sl.receiver.Add(rec); PayRequest req = new PayRequest(new RequestEnvelope("en_US"), "PAY", ...

payment-gateway

Invalid HTTP response the underlying connection was closed: an unexpected error occurred on a send.

31 May 2016 by Amresh Bahadur Singh

i facing some problem in Paypal integration,i find error of this block mainly last line of code on debug time .ReceiverList sl = new ReceiverList(); sl.receiver.Add(rec); PayRequest req = new PayRequest(new RequestEnvelope("en_US"), "PAY", ...

ESWC 2008 Day 1

7 Apr 2009 by Anna-Jayne Metcalfe

Last night's reception at Maximilian's restaurant on Friedrichstraße was great fun. Good food, great beer (I particularly liked the Berliner Weiß) and fantastic company. After breakfast we set up our stand in the sponsor's area (complete with the usual last minute presentation edits).

Get Amount from PayPal IPN

19 Sep 2018 by Arun Kumar K S

Any one know how to pass amount to IPN I passed user id using custom variable but how to pass more than one details to IPN how to pass more than one custom value to IPNinput type="hidden" name="custom" value="" In IPN code I used this. String strUser =...

Adapter

11 Oct 2013 by ASP.NET Community

Adapter PatternThe gang of four definition is "Convert the interface of a class into another interface clients expect. Adpater lets the classes

paypal notify_url not executed some tim

6 Jun 2013 by ayyappadasnk

paypal notify_url not executed some time in my site orchidparking.com.this happened some time of transactions otherwise it work fine.pls give me a solution

How to write capital code for Invesments using uk paypal group ?

22 May 2014 by ballychohan01

hi, could anyone tell how to write capital code for inserting paypal for investments in uk?

Disable "PayPal Account Overview" button on confirmation of purchase

31 Oct 2013 by BenJBaker╣

I have an application that requires the user to make a payment on PayPal before returning them to the webpage, upon returning to the webpage some thinks are activated using session variables that are set before the user is forwarded to paypal. On the confirmation screen it gives the user the...

Disable "PayPal Account Overview" button on confirmation of purchase

1 Nov 2013 by BenJBaker╣

Just thought I'd answer my own question in case anyone else wants the answer, I contacted PayPal and...When a customer makes a payment through PayPal they are automatically asked whether they would like to return to the merchants website or go directly to PayPal.As this is a setting...

Online Store Development

26 Oct 2011 by BillWoodruff

The most practical immediate advice I can give you is to post a question on the Lounge briefly describing that you are creating an on-line store, and asking for opinions of CP members on what products for .NET they currently use and recommend. I suggest you avoid using any language in this post...

Encapsulate a CaptchaImage anti-spam project in a composite web control

18 Nov 2006 by BlaiseBraye

With this web control, you will be able to prevent spammers on your webforms (validation inplemented).

Paypal adaptive payment - preapproval : Start Date Issue

12 Nov 2013 by boombidibam

Hello,I have developed an app using Adaptive payment API, pre-approval. My platform (ubuntu server, Rails, mysql) is using GMT+4 time.-->We are the Nov 8.a/ at 6pm in the afternoon (GmT+4), Start Date for pre-approved payment from a user living using GMT +1 is correct and shows Nov...

how to make function like pay then download ya upload ?

30 Jan 2014 by C0DE_007

i want to add paypal payment function in between upload or download .. like pay this amount to download XYZ.exe software or pay this much amount to upload XYZ file

how to make function like pay then download ya upload ?

1 Feb 2014 by C0DE_007

first store in SESSION before sending data on paypal , and after getting successful page , confirm your session with Paypal IPN data in it you can trace the item name you passed , then auto download tab is open ..

How To add The GridView Footer Total To Paypal BuyNow Button

17 May 2013 by CHAITANYA KIRAN KASANI

hiI Have a Custom Created shopping Cart GridView..In That Gridview Footer Total Amount Of Items is Displayed..Now I Have A Button "Buy Online"..When I Click On The Button The GridView Footer Total Amount Should Be Integrate With The Paypal And Ask For Credit/Debit Card Details...Please...

How To Give Certain Task To Paypal After Completion Of Paypal Payment Successfully ?

21 May 2013 by CHAITANYA KIRAN KASANI

hi FriendsI Have a Custom Created Shopping Cart GridView With Some Items Names And Costs And Also Shows Total Cost Of The Items. I Have A Button named "Buy Online". When i click on that button The Total Cost Is Integrated With Paypal and We Can make purchases through paypal or any...

How to get the layout 'C' code in paypal?

28 Feb 2013 by charan1431

I am using paypal direct payment API.For thatI have registered in manager.paypal.com and followed the procedure for set up and customize and then I have saved and publilshed. Now I want that layout code.Can u tell me how to get this code?

How to give my costumers way to receive visa card & paypal from users with php

9 Apr 2015 by CHill60

Be very very wary of using code that you obtain via an open internet forum when handling money - you could be liable for any losses incurred as a result of running malicious code!PayPal provide support for developers - including a Getting Started guide at the PayPal Developer site[^]

Integrate App Payments Quickly and Seamlessly with PayPal’s Mobile Libraries

12 Jul 2010 by Chris_Hall

This article shows you how easy it is to process and track mobile payments with PayPal.

product-showcase

Take Your Ideas to the Next Level at Innovate 2010 – PayPal X Developer Conference

8 Sep 2010 by Chris_Hall

Innovate 2010, the PayPal X Developer Conference, offers 2,000 developers a chance to learn more about how technology and payments intersect.

product-showcase

Enable Guest Payments Using PayPal’s Adaptive Payments API

8 Nov 2010 by Chris_Hall

Increase customer conversion rates with PayPal's Guest Payments and other features of the Adaptive Payments APIs

product-showcase

Coding for online payment in website

20 Jun 2011 by Christian Graus

I have an article on this site, paypal has samples, surely you want to be more serious about accepting online payments than asking for random strangers to do it for you, without doing any research ?

SQL-Server-2005

How Integrate my Shopping Cart to Paypal

6 Aug 2011 by Christian Graus

Is the paypal site down ? Doesn't seem to be. having read their documentation and done what they say you should do, where are you stuck ?

Easily implementing your own online shop

31 Oct 2014 by Christoph Buenger, DaSpors

How to easily build an online shop with the Scavix PHP Web Development Framework.

How to make a Form Post Securely

6 Jun 2015 by Clark Kent123

Hello,I need some instruction on how I may be able to create a secure form post to a PayPal site to allow a customer to complete their transaction. For the past 4 days I have been Google'ing articles on form post security and PayPal integration (this site has many good PayPal articles), but...

How to make a Form Post Securely

6 Jun 2015 by Clark Kent123

As soon as I submitted this question I came across this article. I think the best bet is to avoid having all the info in a form post and utilize the PayPal API: https://devtools-paypal.com/guide/expresscheckout?interactive=ON&env=sandbox[^]This will allow the server to fill in the...

Hosting issue, help required

29 Nov 2010 by Dalek Dave

Time to get a new hosting company, unless you have the facilities to host your own site.Look around and get quotes.

How do I verify if the user cancel/succeded a paypal payment in C# winforms?

1 Jan 2023 by Dan Sep2022

Hello everyone, I have to make a in-app purchase feature that allow the user to buy an account upgrade in .NET Winforms, so this is what I comes up with: private void _setupPayment(String TypeOf,String Pricing) { string url = "";...

Some Simple PHP Classes for Managing PayPal Instant Payment Notifications

29 Oct 2014 by David O'Neil

A few classes for handling PayPal Instant Payment Notifications, to take care of the necessary processing on your end.

Help Needed in Learning Payement Gateway paypal, ccavenue, pay2u

14 May 2015 by Devendra Sarang

Hello Friend,I am developing website from last 6 months in ASP.net and PHP .Now i am getting requirement for making "ECOMMERCE" website with Payement Gateway paypal, ccavenue, pay2u etc..but i don't know anything about payment gateway.even i don't know how to implement...

Auto sending payments through paypal

1 Jun 2012 by dinhienhy

I'm developing a bidding system and using paypal method.Now, I want to my sytem auto send payment to a paypal account in a background.We will store paypal account of system such as email, signature...I'm a newbie paypal. I use .net to develop this system.Please give me a...

How to setup a Paypal pre-approval through Paypal SOAP API

9 Jun 2012 by dinhienhy

Hello all,I want to setup a paypal pre-approval through paypal soap api.But I could not find any docuemnts about that.Please give me some adviecs,Thanks,Hien Phan

SOAPSonar™ Measures the Distance Between Your Web Services and the Real World

15 Aug 2006 by Dino Esposito

Learn how to really test your SOA Web Services with maximum efficiency during the development cycle.

product-showcase

Making DSLs in F#

16 Aug 2009 by Dmitri Nеstеruk

Let's create a simple project estimation DSL using F#!

why owner not getting confirmation after transaction has been made by customer in asp.net website

21 Mar 2014 by dps2305

Hello there,I have an issue and trying to sort out that.I want to know I have a website in which ssl certificate and payment gateway are there.Sometime,I dont get the confirmation that customer has been done transaction.My questions are:Is it due to ssl certificate or payment...

Coding for online payment in website

21 Jun 2011 by Dylan Morley

Have a look at nopCommerce[^]There are multiple projects in the Payment folder that all implement an IPaymentMethod interface. There are examples for Payal and various other payment providers. It's an excellent open source project that I recommend you download and review.

SQL-Server-2005

Add Multiple PayPal "Buy Now" Buttons to an ASP.NET Form

14 May 2014 by echokilo

A simple tip to avoid the pain caused by PayPal providing code snippets for buttons each in its own form tag

The request was aborted: Could not create SSL/TLS secure channel in Paypal.

1 Feb 2016 by Er. Puneet Goel

I was also facing the same problem. Later i come to know after lots of analysis that Paypal has upgraded its TLS protocols(as per Link ). Now for .NET 4.5 and higher, we can set the http webrequest protocol to TLS 1.2 to higher but .NET 4 or lower doesn't support TLS above TLS1. Hence the...

Paypal Authentication error while creating connection in .Net Framework 4.5

1 Feb 2016 by Er. Puneet Goel

Paypal Sdk throwing error "The request was aborted: Could not create SSL/TLS secure channel" while it was working fine in past. Let me know if there is any solution to that. Note I am using .NET Framework 4.0.

Paypal Authentication error while creating connection in .Net Framework 4.5

3 Feb 2016 by Er. Puneet Goel

ServicePointManager.Expect100C...

Online Store Development

27 Oct 2011 by Espen Harlinn

Here is a feature complete project:http://ofbiz.apache.org/[^]What you're asking for can't really be given a "Quick answer". Use OFBiz as a reference implementation, as it provides a solid data model and implmentation.Java isn't that hard to read for a c# developer - so dive in, it might...

What is the method for paypal notification get? Or post?

30 Nov 2016 by F-ES Sitecore

They use POST so you need Request.Form or to use model binding. There are plenty of PayPal integrations out there and the process is well documented by PayPal itself so you should get familiar with the documentation.

Get Amount from PayPal IPN

19 Sep 2018 by Farris F Al Harbi

Seperate the custom values with a comma "," And then explode with the comma inside your ipn file. Very simple.

A CAPTCHA Control for ASP.NET 2

14 Mar 2008 by Farshid Zavareh

A CAPTCHA control that is simple, secure, and easy to use.

Hosting issue, help required

29 Nov 2010 by fjdiewornncalwe

If you look on the homepage of 1and1, you'll see that they offer ecommerce services. That likely means that they will block anyone who subscribes to their services from using anything other method of ecommerce. Check out your hosting agreement and see if that is the case. If it is, that is why...

How to refund Transaction in Paypal

10 Jan 2013 by fjdiewornncalwe

All you have to do is follow the instructions here[^] by translating those actions into the remotePost commands you are using right now.I fear that google is not working for you: "Paypal Refund Transaction API" gave me this link right off the bat....

Paypal (sandbox/simulator) IPN returning INVALID - out of ideas!

31 May 2016 by Fstarockr

Sorry to have to ask this again - but none of the options ive tried work for me..Below is my listener code:Note i have done the following to the ipn file (from paypal github) - without these issues i got an SSL error in log file. 1. curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);//1 -...

How to put a progress bar into wordpress page while executing another php file

2 May 2011 by funniezatee

Hi all,Let me explain my question.I am working on an e-commerce project. What happens is that after a buyer successfully makes payment through paypal, he gets redirected back to a Transaction page providing him with his purchase details.This Transaction page is part of a wordpress...

PayPal integration through Post Data Transfer method.

26 Jun 2012 by gaurav786mishra

The (post data transfer)pdt works fine in localhost but on live website, i get error after i press subscribe button in PayPalprocessing.aspx page,Error is :"This content cannot be displayed in a frameTo help protect the security of information you enter into this website, the publisher of...

How Can I Make Payment With Paypal Without Redirection To Paypal Website.

2 Jan 2014 by gauravrawat

HiMy question is that i want to integrate paypal. but want Paypal skin appears on our webpage (not redirected to paypal site).when ever user want to make payment using paypal(paypal account or credit card) this should not redirect to paypal web site. the interface of paypal should be...

About Paypal Integration

13 Dec 2011 by gediya84

Dear Member,I want to integrate My online shopping website to paypal.can you given me example of multiple item purchase at a time.Thanks in advance,Thanks You,Harshad D. Gediya[Edit - Contact Number Removed.]

Session value is not passing

18 Sep 2013 by Gowtham B

Hi, I am creating online travel portal website. I am having the error in getting session variable after the payment successpage. It is working fine in local server but online not working properly. Paypal and CCAvenue payment gateway are use in my website.Example here :-In my page...

embeded ebanking (paypal) reg

23 May 2011 by gowthammanju

Hi All,I need to embed the internet banking in my project in asp.netCan i know some procedures to implementNeed options like amount transfer, etc...!Awaiting for your responses.Thanks in Advance.

How do I set up adaptive payments using .NET VB?

17 Mar 2016 by Greesemonkey3

I set up paypal's IPN on my website and it works great! I now would like to know how to use adaptive payments (chained payment) so that once I receive an IPN from Paypal I will then be able to go to a different page and setup the chain payment to take my cut, pay seller 1, and sales person...

How to call Web API of WebSite Payment Pro

23 Dec 2014 by Gurjeetlidher

i have created the parameter list, can anyone tell how to make API(WebSite Payment Pro) call?

getting an error "Security Header is not valid" while making webiste payment pro api call. any help in this regard will be appreciated.

29 Dec 2014 by Gurjeetlidher

Getting an error "Security Header is not valid" while making webiste payment pro API call. any help in this regard will be appreciated.

In Paypal Manager Account All Payments Are Coming In Dollars, It Does Not Matter What Currency Code I Am Sending

19 Jan 2015 by Gurjeetlidher

In PayPal Manager account all payments are coming in dollars, it does not matter what currency code i am sending. i am using PayPal PayFlow pro...

Online Store Development

26 Oct 2011 by Hakoo Desai

Hello Friends, I am creating online store website for one furniture shop. I have made some web designs for this project. Now, I am covered by many questions.The questions I am listing here.1) How to do listing of products such Product image, descriptions and price? ( Static...

Donate code for CC and Paypal

15 Feb 2013 by Hamza M. S. Abazeed

Hi all :)I want to ask, if I can make a donate page that take CC information to transfer mony to paypal accountis that possible ? if so, anyone can provide me the code to do that please ?thanks in advance

Authorize.net development procedure without using MVC

25 Nov 2012 by here_is_kunal

I'm developing a system where a payment option is there. I would like to do the payment procedure in Authorize.net web server, not in my web server. Is this possible. If possible the please tell me how?

paypal and asp.net c#

30 Sep 2013 by idenizeni

Introduction to PayPal for C# - ASP.NET developers[^]

paypal and asp.net c#

30 Sep 2013 by JasonTsoum77

Hellow, In the web site that i implement, using ASP.NET and C# i finish my shopping card and i want to integrate a paypal checkout i read many things and i found them very confusing on paypal.developer.com,Do you know how can i start or has anyone any example of how to use paypal...

paypal and asp.net c#

14 Oct 2013 by JasonTsoum77

I download from https://developer.paypal.com/[^]and i insatll rest api with sdk

paypal option in website

15 Oct 2011 by JawadHafiz

please if anyone help me,I have to integrate a Paypal payment option in my site, where customer should pay the grand total amount generated (it is dynamic), for this which option to use in paypalsandbox

PaypalSandbox transaction ID and Return to page

20 Oct 2011 by JawadHafiz

I created account in Paypal sandbox and linked it till paypal site but I don't know how to get Transaction Id and after completion of payment or Cancel to return to our website.one more issue is Sandbox gives error when i login with personal sandbox Id to make payment for testing purpose.I...

How to receive a success response once the PayPal Adaptive Payments pay operation is completed?

4 Apr 2013 by Jean Paul Abdilla

I am trying to integrate PayPal Adaptive Payments into my localhost project. Until now I have managed to perform the paying process. However I need to receive a success response once the payment has been completed in order to update my database.I have come across the returnURL property,...

How to receive a success response once the PayPal Adaptive Payments pay operation is completed?

4 Apr 2013 by Jean Paul Abdilla

Rutvik Dave is there another way without using IPN since I have to work locally for the moment?

How to receive a success response once the PayPal Adaptive Payments pay operation is completed?

5 Apr 2013 by Jean Paul Abdilla

I have found a possible work around to avoid using the ipnNotificationURL.The lightbox feature. Take a look at the following link Introducing Adaptive Payments While using the lightbox feature, the returnURL seems to be always called.The returnURL was constructed as follows:public...

Wannakey – Redefining software distribution

2 Apr 2007 by Jeppe Mortensen

A new way of selling software has emerged. Making money trying to sell small size programs is not easy. Let’s change that! We are currently guaranteeing 150$ revenue for the first 300 developers who upload their program and starts using the system described in this article.

product-showcase

i want to integrate paypal account with my shopping cart ?

31 Jul 2014 by Jigs Desai

i have buy credential for pay pal. i am selling multiple products on my site i want to integrate my website with pay pal shopping cart button. i have multiple product to sell how i can integrate different products with pay pal button. can any one help me ??

Silverlight and Paypal Adaptive Payments

11 Jul 2011 by jj taylor

I have a Silverlight 4 LOB application to which I would like to add a simple subscription service. Have set up a secure WCF service which returns a valid paykey. The question is how to utilise this resource in Silverlight without exposing the key on the client. A simple solution that works...

Extending the PayPal .NET API to Detect Errors

12 Oct 2015 by jnegron215

This short tip will show you how to extend PayPal's .NET API by adding new members to their objects and page-level functions that will help provide a smooth error-handling experience.

Quick-and-Dirty, Buy-Now Buttons in ASP.NET

16 Feb 2010 by Jonathan Wood

For quick and dirty Buy Now buttons, there is a far simpler approach. You can simply use an anchor link and provide parameters as query arguments.

Create new product in paypal for subscription with REST API

20 Sep 2019 by JordanTrajkov

Hello, I'm trying to create new product, plan and subscription using paypal REST API. I'm using c# code in .net. Everything works find but the response is with status: 200 and it means OK but in the documentation I see that I have to receive a response with status: 201 CREATED. Also in my...

PayPal Integration in HTML Page

16 Jun 2013 by Jovan P

Hi,I have a small problem with the PayPal integration. I want to make input box where you enter price, which will be shown as AMOUNT in the PayPal page.That I want to do the following:1. I have an input field for price

Refund payment in paypal

11 Oct 2012 by kashyap10

Hi,I have developed a website that allow online shopping, i have tested it in sandbox of paypal it works correctly, but i dont know how to refund payment to payee without using any api in paypal sandbox?

Paypal api preference

11 Oct 2012 by kashyap10

Hi, I am developing a website in which i want to sell a single item,Customer can use either paypal account or credit card. furthermore i need to refund payment to customer , so can any one suggest me which paypal sdk , api i should prefer..!

Paypal Sandbox IPN always response Invalid.

27 Feb 2013 by kashyap10

Hello There, I have used Paypal sandbox IPN but I always get Invalid response, please help me i have posted my code below.using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using...

Paypal Sandbox IPN always response Invalid.

4 Mar 2013 by kashyap10

Hey Guys I got the solution.....Instead of checking the response by Response.write() you should use any other option like send mail or run insert query ....the basic concept is you dont need to run your "notify_url" ... it will run automatically when paypal respond ... (if you run it...

PayPal IPN stopped working after 28th March, 13

14 Apr 2013 by Ken__Clark

Hi All,We have a site in which PayPal IPN is implemented. Everything was working fine till 28th march 2013. But, now it stopped working. We have not modified anything in our code. It was working from more than a year. But, now it not working. I don't know if PayPal has changed something...