/// <summary>
/// 英字元号取得
/// </summary>
/// <param name="date">日付</param>
/// <returns>英字元号(H：平成etc)</returns>
public static string GetAlphabetEra(DateTime date)
{
System.Globalization.DateTimeFormatInfo formatInfo = null;
System.Globalization.CultureInfo culture = new System.Globalization.CultureInfo("ja-JP");
formatInfo = culture.DateTimeFormat;
formatInfo.Calendar = new System.Globalization.JapaneseCalendar();
int era = formatInfo.Calendar.GetEra(DateTime.Now);
string eraText = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
for (int i = 0; i < eraText.Length; i++)
{
if (formatInfo.GetEra(eraText[i].ToString()) == era)
{
return(eraText[i].ToString());
}
}
return("H");
}
private void VerificationHelper(DateTimeFormatInfo info, string eraName, int expected)
{
int actual = info.GetEra(eraName);
Assert.Equal(expected, actual);
}
public void GetEra(DateTimeFormatInfo format, string eraName, int expected)
{
Assert.Equal(expected, format.GetEra(eraName));
}
private static int GetEra(__DTString str, DateTimeResult result, ref DateTimeFormatInfo dtfi) {
int[] eras = dtfi.Calendar.Eras;
if (eras != null) {
String word = str.PeekCurrentWord();
int era;
if ((era = dtfi.GetEra(word)) > 0) {
str.Index += word.Length;
return (era);
}
switch (dtfi.CultureID) {
case 0x0411:
// 0x0411 is the culture ID for Japanese.
if (dtfi.Calendar.ID != Calendar.CAL_JAPAN) {
// If the calendar for dtfi is Japanese, we have already
// done the check above. No need to re-check again.
GetJapaneseCalendarDTFI();
if ((era = m_jajpDTFI.GetEra(word)) > 0) {
str.Index += word.Length;
result.calendar = JapaneseCalendar.GetDefaultInstance();
dtfi = m_jajpDTFI;
return (era);
}
}
break;
case 0x0404:
// 0x0404 is the culture ID for Taiwan.
if (dtfi.Calendar.ID != Calendar.CAL_TAIWAN) {
GetTaiwanCalendarDTFI();
if ((era = m_zhtwDTFI.GetEra(word)) > 0) {
str.Index += word.Length;
result.calendar = TaiwanCalendar.GetDefaultInstance();
dtfi = m_zhtwDTFI;
return (era);
}
}
break;
}
}
return (-1);
}
