public static string Format(this DateTime dateTime, CultureInfo cultureInfo, TimeFormatOption option = TimeFormatOption.IncludeTimeIfNonZero)
{
if (dateTime == default)
{
return(string.Empty);
}
var hasTimePart = dateTime.Second + dateTime.Minute + dateTime.Hour > 0;
var dateOnly = dateTime.ToString("d", cultureInfo);
var dateTimeTemplate = $"{dateOnly} {{0}}";
return(option switch
{
TimeFormatOption.ExcludeTime => dateOnly,
TimeFormatOption.IncludeTimeIfNonZero => hasTimePart
? GetDateWithTime("HH:mm")
: dateOnly,
TimeFormatOption.ExcludeSeconds => GetDateWithTime("HH:mm"),
TimeFormatOption.IncludeTime => GetDateWithTime("HH:mm:ss"),
TimeFormatOption.IncludeMilliseconds => GetDateWithTime("HH:mm:ss.fff"),
_ => throw new ArgumentOutOfRangeException(nameof(option), option, null)
});
public static string Format(this DateTimeOffset dateTime, TimeFormatOption option = TimeFormatOption.IncludeTimeIfNonZero) => dateTime.Format(CultureInfo.CurrentUICulture, option);
public static string Format(this DateTimeOffset dateTime, CultureInfo cultureInfo, TimeFormatOption option = TimeFormatOption.IncludeTimeIfNonZero) => dateTime.ToLocalTime().ToDateTime().Format(cultureInfo, option);
public static string Format(this DateTimeOffset?dateTime, TimeFormatOption option = TimeFormatOption.IncludeTimeIfNonZero) => dateTime is null ? string.Empty : dateTime.Value.Format(CultureInfo.CurrentUICulture, option);
