/// <summary>
/// 將日期當作是「西元」年處理。
/// </summary>
/// <param name="dtString">日期字串。 </param>
/// <param name="method">如果日期缺少的欄位用何種方式補上。</param>
/// <returns></returns>
public static DateTime? ParseGregorian(string dtString, PaddingMethod method)
{
PatternMatcher matcher = new PatternMatcher(dtString.Trim());
if (!matcher.IsSuccess)
return null;
else
{
string assembly;
if (method == PaddingMethod.None)
{
foreach (Group each in matcher.EachGroup())
if (!each.Success) return null;
assembly = matcher.GetReassemblyString();
}
else
{
int year, month, day, hour, minute, second;
DateTimePaddingInfo padding = new DateTimePaddingInfo(method);
ExtractInfo(matcher, padding, out year, out month, out day, out hour, out minute, out second);
assembly = year + "/" + month + "/" + day + " " + hour + ":" + minute + ":" + second;
}
DateTime result;
if (DateTime.TryParse(assembly, DateTimeFormatInfo.InvariantInfo, DateTimeStyles.None, out result))
return result;
else
return null;
}
}
