Invalid Language Name detected on browser
string cultureName = string.Empty;

try
{
    string[] languages = HttpContext.Current.Request.UserLanguages;
    cultureName = languages[0].ToLowerInvariant().Trim();
}
catch
{
    cultureName = "en-US";
}

System.Globalization.CultureInfo browserCulture = CultureInfo.CreateSpecificCulture(cultureName);
System.Threading.Thread.CurrentThread.CurrentCulture = browserCulture;
System.Threading.Thread.CurrentThread.CurrentUICulture = browserCulture;

CultureInfo cultureInfo;

try
{
    string[] languages = HttpContext.Current.Request.UserLanguages;
    string cultureName = languages[0].ToLowerInvariant().Trim();
    cultureInfo = CultureInfo.CreateSpecificCulture(cultureName);
}
catch
{
    cultureInfo = CultureInfo.CreateSpecificCulture("en-US");
}

System.Globalization.CultureInfo browserCulture = cultureInfo;
System.Threading.Thread.CurrentThread.CurrentCulture = browserCulture;
System.Threading.Thread.CurrentThread.CurrentUICulture = browserCulture;