/// <summary>
/// Sets the culture-specific day of week style.
/// </summary>
/// <param name="cultureName">A string that specify the name of culture to set the <paramref name="dayOfWeekStyle"/> for.</param>
/// <param name="dayOfWeekStyle">A <see cref="DayOfWeekStyle"/> to be set.</param>
/// <exception cref="ArgumentNullException"><paramref name="cultureName"/> is null.</exception>
public static void SetDayOfWeekStyle(string cultureName, DayOfWeekStyle dayOfWeekStyle)
{
if (cultureName is null)
{
throw new ArgumentNullException(nameof(cultureName));
}
_cultureDayOfWeekStyles[cultureName] = dayOfWeekStyle;
DiscardFormatInfoCache(cultureName);
}
static CalendarFormatInfo()
{
SetYearPattern(JapaneseCultureNames, "yyyy" + CJKYearSuffix);
SetYearPattern(ZhongwenCultureNames, "yyyy" + CJKYearSuffix);
SetYearPattern(KoreanCultureNames, "yyyy" + KoreanYearSuffix);
var dayOfWeekStyle = new DayOfWeekStyle(LongDayOfWeek, string.Empty, false);
SetDayOfWeekStyle(JapaneseCultureNames, dayOfWeekStyle);
SetDayOfWeekStyle(ZhongwenCultureNames, dayOfWeekStyle);
}
/// <summary>
/// Sets the culture-specific day of week style.
/// </summary>
/// <param name="cultureNames">An array of string that specify the name of culture to set the <paramref name="dayOfWeekStyle"/> for.</param>
/// <param name="dayOfWeekStyle">A <see cref="DayOfWeekStyle"/> to be set.</param>
/// <exception cref="ArgumentNullException"><paramref name="cultureNames"/> is null.</exception>
public static void SetDayOfWeekStyle(string[] cultureNames, DayOfWeekStyle dayOfWeekStyle)
{
if (cultureNames is null)
{
throw new ArgumentNullException(nameof(cultureNames));
}
foreach (var cultureName in cultureNames)
{
SetDayOfWeekStyle(cultureName, dayOfWeekStyle);
}
}
/// <summary>
/// Creates a <see cref="CalendarFormatInfo"/> from the <see cref="CultureInfo"/>.
/// </summary>
/// <param name="cultureInfo">A <see cref="CultureInfo"/> that specifies the culture to get the date format.</param>
/// <returns>The <see cref="CalendarFormatInfo"/> object that this method creates.</returns>
/// <exception cref="ArgumentNullException"><paramref name="cultureInfo"/> is null.</exception>
public static CalendarFormatInfo FromCultureInfo(CultureInfo cultureInfo)
{
if (cultureInfo is null)
{
throw new ArgumentNullException(nameof(cultureInfo));
}
CalendarFormatInfo calendarInfo;
if (_formatInfoCache.TryGetValue(cultureInfo.Name, out calendarInfo))
{
return(calendarInfo);
}
var dateTimeFormat = cultureInfo.DateTimeFormat;
string yearPattern;
if (!_cultureYearPatterns.TryGetValue(cultureInfo.Name, out yearPattern))
{
yearPattern = "yyyy";
}
DayOfWeekStyle dayOfWeekStyle;
if (!_cultureDayOfWeekStyles.TryGetValue(cultureInfo.Name, out dayOfWeekStyle))
{
dayOfWeekStyle = DayOfWeekStyle.Parse(dateTimeFormat.LongDatePattern);
}
var monthDayPattern = dateTimeFormat.MonthDayPattern.Replace("MMMM", "MMM");
if (dayOfWeekStyle.IsFirst)
{
calendarInfo = new CalendarFormatInfo(dateTimeFormat.YearMonthPattern,
monthDayPattern,
dayOfWeekStyle.Pattern + dayOfWeekStyle.Separator,
yearPattern);
}
else
{
calendarInfo = new CalendarFormatInfo(dateTimeFormat.YearMonthPattern,
dayOfWeekStyle.Pattern,
monthDayPattern + dayOfWeekStyle.Separator,
yearPattern);
}
_formatInfoCache[cultureInfo.Name] = calendarInfo;
return(calendarInfo);
}