European ASP.NET MVC 4 and MVC 5 Hosting

BLOG about ASP.NET MVC 3, ASP.NET MVC 4, and ASP.NET MVC 5 Hosting and Its Technology - Dedicated to European Windows Hosting Customer

European ASP.NET MVC Hosting :: How to Integrate Your ASP.NET MVC with Paypal

clock March 5, 2019 08:27 by author Scott

PayPal is an online payment service that allows you to pay for purchases, receive payments, or to send and receive money. To receive these services, a person must submit various financial details to PayPal, such as credit card number, transmission can be done by mail. Thereafter, transactions are conducted without having to disclose financial details, an email address and a password is sufficient.

for more information about business please visit official Paypal Website for business or https://developer.paypal.com/webapps/developer/docs/integration/direct/log-in-with-paypal/detailed/

In this tutorial we propose to integrate the PAYPAL  e-commerce payment solution.

So, we are using Visual studio C# and ASP.NET MVC4 (for more information about ASP.NET MVC please take a look at  http://www.asp.net/mvc/tutorials/mvc-4/getting-started-with-aspnet-mvc4/intro-to-aspnet-mvc-4

Ready ? Lets start our tutorial :

1. Open Visual studio 2012 or later and Create your Project

2.  Choose ASP.NET MVC4 Template Projet, Internet Application and Razor ViewEngine

 

3. Expand Model folder and Create a new Model named PayPalModel to hold PayPal payment parameters

Try it 

public class PayPalModel
{
public string cmd { get; set; }
public string business { get; set; }
public string no_shipping { get; set; }
public string @return { get; set; }
public string cancel_return { get; set; }
public string notify_url { get; set; }
public string currency_code { get; set; }
public string item_name { get; set; }
public string amount { get; set; }
public string actionURL { get; set; }

public PayPalModel(bool useSandbox)
{
this.cmd = “_xclick”;
this.business = ConfigurationManager.AppSettings[“business”];
this.cancel_return = ConfigurationManager.AppSettings[“cancel_return”];
this.@return = ConfigurationManager.AppSettings[“return”];
if (useSandbox)
{
this.actionURL = ConfigurationManager.AppSettings[“test_url”];
}
else
{
this.actionURL = ConfigurationManager.AppSettings[“Prod_url”];
}
// We can add parameters here, for example OrderId, CustomerId, etc….
this.notify_url = ConfigurationManager.AppSettings[“notify_url”];
// We can add parameters here, for example OrderId, CustomerId, etc….
this.currency_code = ConfigurationManager.AppSettings[“currency_code”];
}
}

4. Create a Paypal Controller

Try it :

public class PayPalController : Controller
{
public ActionResult RedirectFromPaypal()
{
return View();
}

public ActionResult CancelFromPaypal()
{
return View();
}

public ActionResult NotifyFromPaypal()
{
return View();
}

public ActionResult ValidateCommand(string product, string totalPrice)
{
return View();
}
}

5. Now Create a Partial View (ValidateCommand.csHtml)  to use our Model.  Do not forget that all fields must be of type hidden

try it :

@model PaypalMVC.Models.PayPalModel

<body>
<form id=”hiddenform” action=@Model.actionURL>
@Html.HiddenFor(model => model.cmd)
@Html.HiddenFor(model => model.business)
@Html.HiddenFor(model => model.no_shipping)
@Html.HiddenFor(model => model.@return)
@Html.HiddenFor(model => model.cancel_return)
@Html.HiddenFor(model => model.notify_url)
@Html.HiddenFor(model => model.currency_code)
@Html.HiddenFor(model => model.item_name)
@Html.HiddenFor(model => model.amount)
</form>

<p style=”text-align: center”>
<h3>
Connecting to Paypal , please wait …

</h3>
</p>
</body>
@Scripts.Render(“~/bundles/jquery”)

<script type=”text/javascript” language=”javascript”>
$(this.document).ready(function () {
var form = $(“form”);
form.submit();
});
</script>

6. Now finish our ValidateCommand action of PayPalController

try it :

public ActionResult ValidateCommand(string product, string totalPrice)
{
bool useSandbox = Convert.ToBoolean(ConfigurationManager.AppSettings[“IsSandbox”]);
var paypal = new PayPalModel(useSandbox);

paypal.item_name = product;
paypal.amount = totalPrice;
return View(paypal);
}

7. Next finish our partialView by adding a jquery code to auto submit our form. The necessary scripts are  Jquery-{version}.js and    Jquery-{version}.min.js. Here we are used  @Scripts.Render(“~/bundles/jquery”)  to include all Jquery scripts.  A more better practice will be to export all javascript functions to external file but the submit function must be called just after displaying hidden field of our form

8. The next step is to create our checkOut form that dispays product name , Quantity, price and Total :

So expand View folder , expand Home folder and open index.csHtml file. Replace its contents by the following

try it : 

@{
ViewBag.Title = “Home Page”;
}
@using (Html.BeginForm(“ValidateCommand”, “PayPal”))
{
<div>
<table >
<tr>
<td>
product Name:
</td>
<td>
<input type=”text” name=”product” value=”Visual Studio 2013″ readonly />
</td>
</tr>
<tr>
<td>
Total Price:
</td>
<td>
$<input type=”text” name=”totalPrice” value=”14800″ readonly />
</td>
</tr>
<tr>
<td>
</td>
<td>
<input type=”submit” name=”btnConfirm” value=”Check Out with Paypal” />
</td>
</tr>
</table>
</div>
}

9. we are at the end. Our final step is to update the web.config file with the appropriate settings

10. Let’s test and run the application

 

11. Confirm payment by clicking on button Check Out With PayPal, then you will be redirected to the payment page 

We have this page error because, we have not yet an valid account.

Now it time to create a test account by following this link https://developer.paypal.com/webapps/developer/docs/classic/lifecycle/ug_sandbox/#accounts

12. Open Web.config file and update business value with your test account 

 

13. So run again your application. Confirm or Cancel , etc…

Hope this tutorial helps you. 

 



European ASP.NET MVC Hosting - UK :: Tips Using BindAttribute in ASP.NET MVC

clock March 3, 2015 06:21 by author Scott

The Bind attribute is used to protect against over-posting. Represents an attribute that is used to provide details about how model binding to a parameter should occur.

Let’s take an example of Employee Controller which creates the records for employee basic information.

This code adds the Employee entity created by the ASP.NET MVC model binder to the Employees entity set and then saves the changes to the database.

The ValidateAntiForgeryToken attribute helps prevent cross-site request forgery attacks.

EmployeeController.cs –> Create

[HttpPost]
[ValidateAntiForgeryToken]
public ActionResult Create(
   [Bind(Include = "FirstName, LastName, JoiningDate")]
   Employee employee)
{
   try
   {
      if (ModelState.IsValid)
      {
         db.Employees.Add(employee);
         db.SaveChanges();
         return RedirectToAction("Index");
      }
   }
   catch (DataException ex)
   {
      //Log the error
      ModelState.AddModelError("", "Unable to save. Try again.");
   }
   return View(employee);
}

Employee.cs

public class Employee
   {
      public int ID { get; set; }
      public string LastName { get; set; }
      public string FirstName { get; set; }
      public DateTime JoiningDate { get; set; }
      public string City { get; set; }

    }

For example, suppose the Employee entity includes a City property that you don’t want this web page to update. Even if you don’t have a City field on the web page, a hacker could use a tool such as fiddler, or write some JavaScript, to post a City form value. Without the Bind attribute limiting the fields that the model binder uses when it creates an Employee instance, the model binder would pick up that City form value and use it to update the Employee entity instance. Then whatever value the hacker specified for the City form field would be updated in your database.

It’s a security best practice to use the Include parameter with the Bind attribute to whitelist fields. It’s also possible to use the Exclude parameter to blacklist fields you want to exclude. The reason Include is more secure is that when you add a new property to the entity, the new field is not automatically protected by an Exclude list.

Another alternative approach, and one preferred by many, is to use only view models with model binding. The view model contains only the properties you want to bind. Once the MVC model binder has finished, you copy the view model properties to the entity instance.



About HostForLIFE.eu

HostForLIFE.eu is European Windows Hosting Provider which focuses on Windows Platform only. We deliver on-demand hosting solutions including Shared hosting, Reseller Hosting, Cloud Hosting, Dedicated Servers, and IT as a Service for companies of all sizes.

We have offered the latest Windows 2016 Hosting, ASP.NET Core 2.2.1 Hosting, ASP.NET MVC 6 Hosting and SQL 2017 Hosting.


Widget LinkList not found.

Unable to cast object of type 'ASP.widgets_linklist_widget_ascx' to type 'WidgetBase'.X

Widget LinkList not found.

Unable to cast object of type 'ASP.widgets_linklist_widget_ascx' to type 'WidgetBase'.X

Widget Tag cloud not found.

Unable to cast object of type 'ASP.widgets_tag_cloud_widget_ascx' to type 'WidgetBase'.X

Sign in