ToTimeZone throws error on Linux

[chrisg32]

It appears that the DateTime.ToTimeZone extension method will error on Linux systems because TimeZoneInfo.GetSystemTimeZones() which is used in the implementation returns more than once value and the implementation is expecting one or none (SingleOrDefault).

Timezone string: Central Standard Time
OS: ubuntu-latest

[chrisg32]

Probably should have the following implementation:

public abstract class TimeZoneLocator
    {
        public static TimeZoneLocator Default { get; set; } = new SystemTimeZoneLocator();
        public abstract TimeZoneInfo FindTimeZoneById(string timezone);
    }

    public sealed class SystemTimeZoneLocator : TimeZoneLocator
    {
        public override TimeZoneInfo FindTimeZoneById(string timezone)
        {
            return TimeZoneInfo.FindSystemTimeZoneById(timezone);
        }
    }