public virtual IActionResult ChangeCulture(string name, string returnUrl)
{
name = name?.Trim();
if (!CultureInfoHelper.IsCultureName(name))
{
return(LocalRedirect(returnUrl));
}
Response.Cookies.Append(CookieRequestCultureProvider.DefaultCookieName, CookieRequestCultureProvider.MakeCookieValue(new RequestCulture(name)), new CookieOptions
{
Secure = Request.IsHttps,
IsEssential = true,
Expires = DateTimeOffset.UtcNow.AddDays(7)
});
return(LocalRedirect(returnUrl));
}
protected override Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken token)
{
if (token.IsCancellationRequested)
{
return(Task.FromCanceled <HttpResponseMessage>(token));
}
// here you can chose to get the lang from database, cookie or from the request if the culture is stored on local storage.
CultureInfo ci = null;
if (!string.IsNullOrEmpty(request.RequestUri.Query))
{
NameValueCollection queryString = HttpUtility.ParseQueryString(request.RequestUri.Query);
string name = queryString[_parameterName]?.Trim();
if (!string.IsNullOrEmpty(name))
{
ci = CultureInfoHelper.Get(name);
}
}
if (ci == null && request.Headers.AcceptLanguage.Count > 0)
{
foreach (StringWithQualityHeaderValue headerValue in request.Headers.AcceptLanguage)
{
if (string.IsNullOrEmpty(headerValue.Value) || headerValue.Value.Length < 2)
{
continue;
}
string name = headerValue.Value.Substring(0, 2);
if (!CultureInfoHelper.IsCultureName(name))
{
continue;
}
ci = CultureInfoHelper.Get(name);
}
}
if (ci != null)
{
request.Headers.AcceptLanguage.Clear();
request.Headers.AcceptLanguage.Add(new StringWithQualityHeaderValue(ci.Name));
Thread.CurrentThread.CurrentCulture = ci;
Thread.CurrentThread.CurrentUICulture = ci;
}
return(base.SendAsync(request, token));
}
public static bool AddCulture([NotNull] string name)
{
return(CultureInfoHelper.IsCultureName(name) && __supportedCultures.Add(name));
}
