public void ConfigureServices(IServiceCollection services)
    {
      services.AddLocalization(options => options.ResourcesPath = "Resources");
      services.AddMvc()
        .AddViewLocalization(LanguageViewLocationExpanderFormat.Suffix);
      services.Configure<RequestLocalizationOptions>(opts =>
        {
          var supportedCultures = new List<CultureInfo>{
            new CultureInfo("en-US"),
            new CultureInfo("zh-CN")};
            opts.SupportedCultures = supportedCultures;
            opts.SupportedUICultures = supportedCultures; 
            opts.RequestCultureProviders = new List<IRequestCultureProvider>{
              new X_DOVERequestCultureProvider()
            };
        });
      services.AddControllersWithViews();
    }

public class X_DOVERequestCultureProvider : RequestCultureProvider
  {
    public override Task<ProviderCultureResult> DetermineProviderCultureResult(HttpContext httpContext)
    {
      var CULTURE_String = "CULTURE";
      var CultureCookie = httpContext.Request.Cookies[CULTURE_String]"";
      if (string.IsNullOrWhiteSpace(CultureCookie))
      {
        CultureCookie = "zh-CN";
        httpContext.Response.Cookies.Append(key: CULTURE_String, value: CultureCookie, options: new CookieOptions() { Expires = DateTime.Now.AddYears(1) });
      }
      return Task.FromResult(new ProviderCultureResult(CultureCookie));
    }
  }

 app.UseRequestLocalization(
        options:app.ApplicationServices
        .GetService<IOptions<RequestLocalizationOptions().Value);

@using Microsoft.AspNetCore.Mvc.Localization
@inject IViewLocalizer Localizer

<section class="copyright"> @Localizer["section1"] <a href="https://github.com/zaranetCore/amusinghoS" rel="external nofollow" > | GitHub</a></section>

<script>
  $(function () {
    $("#language").change(function (e) {
      var opt = $("#language").val();
      if (opt == 1) {
        document.cookie = 'CULTURE=zh-CN';
        location.reload();
      } else if(opt == 2) {
        document.cookie = 'CULTURE=en-US';
        location.reload();
      }
    });
  });
</script>