HomeController.cs

using System;
using System.Net.Http;
using System.Threading.Tasks;
using System.Web.Mvc;

namespace TestMvc.Controllers
{
    public class HomeController : Controller
    {
        public ActionResult Index()
        {
            var jsonTask = GetData(new Uri("http://google.com"));
            var data = jsonTask.Result;
            return Content(data);
        }

        public async Task<string> GetData(Uri uri)
        {
            using (var client = new HttpClient())
            {
                var data = await client.GetStringAsync(uri);
                return data;
            }
        }
    }
}