Getting a System.ArgumentNullException calling IsOfficialPublicHolidayByCounty

Hi Tino, First of all, just wanted to say this is a great library 🥇 When I am checking a date that is a holiday for county code “GB-ENG” then I get an exception on items where they do not have any Counties (null). {“Value cannot be null.\r\nParameter name: source”}

public static bool IsOfficialPublicHolidayByCounty(DateTime date, CountryCode countryCode, string countyCode)
{
    var items = GetPublicHoliday(countryCode, date.Year);
    return items.Where(o => o.Date.Date == date.Date && o.Counties.Contains(countyCode) && o.CountyOfficialHoliday).Any();
}

However, what I really want is to find if a date is a holiday in the UK but exclude any holidays that are specifically for Northern Ireland or Scotland, so I created the following method :

return IsOfficialPublicHolidayExcludeCounties(date, CountryCode.GB, new string[] { "GB-NIR", "GB-SCT" });

public static bool IsOfficialPublicHolidayExcludeCounties(DateTime date, CountryCode countryCode, string[] countyCodes)
{
    var items = DateSystem.GetPublicHoliday(countryCode, date.Year);
    return items.Where(o => o.Date.Date == date.Date && (o.Counties == null || o.Counties.Except(countyCodes).Any()) && o.CountyOfficialHoliday).Any();
}

Thought it might help

[AndrueCope]

Lol, and I forgot a set of brackets. Or more correctly ReSharper did. It should be:

items.Any(o => o.Date.Date == queryTime.Date && ((o.Counties==null)||o.Counties.Contains(“GB-ENG”)) && o.CountyOfficialHoliday)

[tinohager]

If this issue done?