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

user_36590 0
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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?

absolute-path asp.net-mvc .net
8 Answers

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

eu-ge-ne_806010

This way i got the hosting path.

using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;

namespace IHostingEnvironmentExample.Controllers
{
    public class HomeController : Controller
    {
        private IHostingEnvironment _env;
        public HomeController(IHostingEnvironment env)
        {
            _env = env;
        }
        public IActionResult Index()
        {
            var webRoot = _env.WebRootPath;
            var file = System.IO.Path.Combine(webRoot, "test.txt");
            System.IO.File.WriteAllText(file, "Hello World!");
            return View();
        }
    }
}

https://forums.asp.net/t/1696005.aspx?How+to+get+Local+Server+path+in+mvc

Admin1
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