Question

Can I store something in HttpContext.Current.Application["MyData"] accessing that from javascript?

Answer 1

You can do it but you should not do it as this is totally anti MVC practice as views shouldn’t be pulling information => views should only use information that is being passed to them in the form of a view model from the controller action:

<script type="text/javascript">
    var myData = @Html.Raw(Json.Encode(ViewContext.HttpContext.Application["MyData"]))
</script>

Obviously the correct way to achieve this is to define a view model:

public class MyViewModel
{
    public MyDataType MyData { get; set; }
}

then a controller action:

public ActionResult Index()
{
    var model = new MyViewModel
    {
        MyData = HttpContext.Application["MyData"] as MyDataType;
    };
    return View(model);
}

and finally a view:

@model MyViewModel
<script type="text/javascript">
    var myData = @Html.Raw(Json.Encode(Model.MyData))
</script>