Asp.Net MVC 文化 Cookie 更改但 UI 语言不会更改，直到第二次刷新

Question

在我的 Asp.Net MVC 应用程序中，用户来自另一个系统，其 URL 包含他们自己的 UserId。在用户的初始请求中，经过认证过程，将用户的语言选项同步到相应的cookie值。

    [HttpPost]
    [AllowAnonymous]
    public JsonResult Login(Guid userId, UserType userType)
    {
        try
        {
            IAccount account = null;

            if (userType == UserType.SystemUser)
                account = _accountService.CheckSystemUser(userId);
            if (userType == UserType.Employee)
                account = _accountService.CheckEmployee(userId);

            if (account == null) throw new Exception(ErrorMessages.UserNotFound);

            var roles = account.Roles.ToArray();

            var principalModel = new CustomPrincipalViewModel
            {
                UserId = account.UserId.ToString(),
                FullName = account.FullName,
                Roles = roles,
                Language = account.Language
            };

            var userData = JsonConvert.SerializeObject(principalModel);
            var ticket = new FormsAuthenticationTicket(1, principalModel.FullName, DateTime.Now,
                DateTime.Now.AddMinutes(30), false, userData);
            var encryptedTicket = FormsAuthentication.Encrypt(ticket);
            var requestCookie =Request.Cookies[FormsAuthentication.FormsCookieName];
            if (requestCookie != null) requestCookie.Expires = DateTime.Now.AddDays(-1);
            var responseCookie =Response.Cookies[FormsAuthentication.FormsCookieName];
            if(responseCookie != null) responseCookie.Expires = DateTime.Now.AddDays(-1);
            var cookie = new HttpCookie(FormsAuthentication.FormsCookieName, encryptedTicket);
            Response.Cookies.Add(cookie);

            SetCulture(account.Language.CultureCode);

            return Json(new {isSuccess = true, userFullName = account.FullName});

        }
        catch (BusinessExceptions.CannotConnectToCrmServiceException ex)
        {
            ElmahManager.Log(ex);
            return Json(new { isSuccess = false, errorText = ErrorMessages.GeneralError });
        }
        catch (Exception exception)
        {
            ElmahManager.Log(exception);
            return Json(new { isSuccess = false, errorText = ErrorMessages.GeneralError });
        }
    }

    private void SetCulture(string culture)
    {
        culture = CultureHelper.GetImplementedCulture(culture);
        var requestCookie =Request.Cookies["_culture"];
        if (requestCookie != null) requestCookie.Expires = DateTime.Now.AddDays(-1);


        var cultureCookie = Request.Cookies["_culture"];
        if (cultureCookie == null)
        {
            cultureCookie = new HttpCookie("_culture")
            {
                Value = culture,
                Expires = DateTime.Now.AddYears(1)
            };
        }
        else
        {
            cultureCookie.Value = culture;
            cultureCookie.Expires = DateTime.Now.AddYears(1);
        }
        Response.Cookies.Add(cultureCookie);
        Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo(culture);
        Thread.CurrentThread.CurrentUICulture = Thread.CurrentThread.CurrentCulture;
    }

在这个过程之后，当我从数据库中更改用户的语言选择并刷新页面时，页面语言并没有改变。同时，当我检查cookie值时，我看到它与当前的语言值相同，但页面语言不会改变，直到页面被第二次刷新。

Answer 1

你必须改变

public JsonResult Login(Guid userId, UserType userType) 

到

public ActionResult Login(Guid userId, UserType userType) 

并返回查看或重定向。

[HttpPost]
[AllowAnonymous]
public ActionResult Login(Guid userId, UserType userType)
{
    try{

     //Your logic 
     return View(new {isSuccess = true, userFullName = account.FullName});
    }
    catch (BusinessExceptions.CannotConnectToCrmServiceException ex)
    {
        ElmahManager.Log(ex);
        return View(new { isSuccess = false, errorText = ErrorMessages.GeneralError });
    }
    catch (Exception exception)
    {
        ElmahManager.Log(exception);
        return View(new { isSuccess = false, errorText = ErrorMessages.GeneralError });
    }
}