摘要： First , about the date time rules:规范DateTimeFormatInfo属性模式的价值（en - US文化）tShortTimePatternh:mm ttdShortDatePatternM/d/yyyyTLongTimePatternh:mm:ss ttDLongDatePatterndddd, MMMM dd, yyyyf（组合DtT ）dddd, MMMM dd, yyyy h:mm ttFFullDateTimePatterndddd, MMMM dd, yyyy h:mm:ss ttg（组合dtT ）M/d/yyyy h:mm ttG（组合dTT 阅读全文