Чтобы получить текущую культуру в контроллере ASP.NET Core 6, вы можете использовать следующие методы:

1. Метод 1. Доступ к свойству CurrentCulture:

   using System.Globalization;
   using Microsoft.AspNetCore.Mvc;
   public class MyController : Controller
   {
      public IActionResult MyAction()
      {
          CultureInfo currentCulture = CultureInfo.CurrentCulture;
          // Use the currentCulture variable as needed
          return View();
      }
   }

2. Метод 2: внедрение IWebHostEnvironment:

   using System.Globalization;
   using Microsoft.AspNetCore.Hosting;
   using Microsoft.AspNetCore.Mvc;
   public class MyController : Controller
   {
      private readonly IWebHostEnvironment _hostingEnvironment;
      public MyController(IWebHostEnvironment hostingEnvironment)
      {
          _hostingEnvironment = hostingEnvironment;
      }
      public IActionResult MyAction()
      {
          CultureInfo currentCulture = _hostingEnvironment.ContentRootCulture;
          // Use the currentCulture variable as needed
          return View();
      }
   }

3. Метод 3: доступ к HttpContext:

   using System.Globalization;
   using Microsoft.AspNetCore.Http;
   using Microsoft.AspNetCore.Mvc;
   public class MyController : Controller
   {
      private readonly IHttpContextAccessor _httpContextAccessor;
      public MyController(IHttpContextAccessor httpContextAccessor)
      {
          _httpContextAccessor = httpContextAccessor;
      }
      public IActionResult MyAction()
      {
          CultureInfo currentCulture = _httpContextAccessor.HttpContext?.Features.Get<IRequestCultureFeature>()?.RequestCulture?.Culture;
          // Use the currentCulture variable as needed
          return View();
      }
   }

Эти методы позволяют получить текущую культуру в контроллере ASP.NET Core 6.