Is there a way to access an object defined on a view in a Master Page in ASP.Net MVC

Question

Hi all,

So I've got a partial in my MVC project that creates a JSON array. I want to move this chuck of code from the top of the html page body to the bottom with the rest of the JS for speed reasons. That is to say I want to store the JSON created as a string in C# and access it on the Site.Master.

What's the best option here?

Thanks, Denis

Answer 1

Hi,

When I need to access information in my MasterPage I create a BaseController and set the information in my ViewData :

public abstract class BaseController : Controller
{
    protected override void Initialize(System.Web.Routing.RequestContext requestContext)
    {
        base.Initialize(requestContext);

        ViewData["JSonObject"] = "json string";
    }
}

Just have to inherit all controller from BaseController and it will work.

All views including MasterPage can access ViewData["JSonObject"] now!

Answer 2

Just call RenderPartial in the MasterPage

Answer 3

Use ViewData to pass information around between the views.

In your partial:

ViewData["JsonString"] = ".....";

In the master page:

<%= ViewData[ "JsonString" ] %>

Answer 4

Seems that ViewData is Top down only. So if you assign a value in the partials parent or a controller that'll work but not the other way round. I managed to get it working using Context.Item

Context.Items["JSONFeatures"] = "test"; on Partial Context.Items["JSONFeatures"].ToString(); on MasterPage

Hope this helps someone. I'm not sure if this is best practices but it works it I know better!