.net – ASP.NET MVC – Find Absolute Path to the App_Data folder from Controller

.netabsolute-pathasp.net-mvc

What is the correct way to find the absolute path to the App_Data folder from a Controller in an ASP.NET MVC project? I'd like to be able to temporarily work with an .xml file and I don't want to hardcode the path.

This does not work:

[HandleError]
public class HomeController : Controller
{
    public ActionResult Index()
    {
        string path = VirtualPathUtility.ToAbsolute("~/App_Data/somedata.xml");

        //.... do whatever 

        return View();
    }

}

I think outside of the web context VirtualPathUtility.ToAbsolute() doesn't work.
string path comes back as "C:\App_Data\somedata.xml"

Where should I determine the path of the .xml file in an MVC app?
global.asax and stick it an application-level variable?

Best Solution

ASP.NET MVC1 -> MVC3

string path = HttpContext.Current.Server.MapPath("~/App_Data/somedata.xml");

ASP.NET MVC4

string path = Server.MapPath("~/App_Data/somedata.xml");


MSDN Reference:

HttpServerUtility.MapPath Method