How to access objects inside a List, saved in a Session. ASP.NET MVC 3

asp.net-mvc-3, session

Solution

it's as simple as reading back the value from your session varable and cast it to the original type, then do whatever you want

example:

@{
    if(Session["list"]!= null)
    {
    var listBackFromSession = (List<Carrito>)Session["list"];
    // do what you want
    }
 }

My recommendation is to use the more elegant way of ViewBag.

a quote from official asp.net mvc website about Viewbag:

New "ViewBag" Property

MVC 2 controllers support a ViewData property that enables you to pass data to a view template using a late-bound dictionary API. In MVC 3, you can also use somewhat simpler syntax with the ViewBag property to accomplish the same purpose. For example, instead of writing ViewData["Message"]="text", you can write ViewBag.Message="text". You do not need to define any strongly-typed classes to use the ViewBag property. Because it is a dynamic property, you can instead just get or set properties and it will resolve them dynamically at run time. Internally, ViewBag properties are stored as name/value pairs in the ViewData dictionary. (Note: in most pre-release versions of MVC 3, the ViewBag property was named the ViewModel property.)

Further more, This is a good article to read about the different ways you have in MVC in order to preserve data: http://rachelappel.com/when-to-use-viewbag-viewdata-or-tempdata-in-asp.net-mvc-3-applications

example:

var list = new List<Carrito> { 
                new Carrito { ProductId = producto.ID , Cantidad = 1, PrecioUnitario = producto.Precio }
            };

// use ViewBag
ViewBag.myList = list;

then inside your view, read them back like this:

var myList = (List<Carrito>)ViewBag.myList;
// your code

Problem

Original source