Russian language query parse

gistfile1.cs

using Microsoft.Owin.Hosting;
using Owin;
using System;
using System.Threading.Tasks;
using AppFunc = System.Func<System.Collections.Generic.IDictionary<string, object>, System.Threading.Tasks.Task>; 

namespace Playground1
{
    class Program
    {
        static void Main(string[] args)
        {
            using (WebApp.Start<Startup>("http://localhost:12345"))
            {
                Console.ReadLine();
            }

        }
    }
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            app.Use(new Func<AppFunc, AppFunc>(ignoreNext => (env =>
            {
                Console.WriteLine(Uri.UnescapeDataString(env["owin.RequestQueryString"] as string));
                return Task.FromResult(0);
            })));
        }
    }
}