public void Configure(IApplicationBuilder app, IHostingEnvironment env)
    {
        app.UseAuthentication();
        var locOptions =
   app.ApplicationServices.GetService<IOptions<RequestLocalizationOptions>>();


        app.UseRequestLocalization(locOptions.Value);

        CultureInfo cultureInfo = Thread.CurrentThread.CurrentCulture;
        var culture = cultureInfo.Name;

        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
        }

        app.UseStaticFiles();
        app.UseSession();

        //configuring mvc routes...
        app.UseMvc(routes =>
        {
            routes.MapRoute(
               name: "areaRoute",
               template: "{area:exists}/{controller}/{action}/{id?}",
               defaults: new { controller = "Home", action = "Index" });

            routes.MapRoute(
                name: "default",
                template: "{culture}/{controller}/{action}/{id?}",
                defaults: new { culture = culture, controller = "Home", action = "Index" });
        });
    }