https://learn.microsoft.com/zh-cn/dotnet/api/system.globalization.datetimeformatinfo.nativecalendarname?view=netframework-4.8.1&viewFallbackFrom=net-10.0
DateTimeFormatInfo.NativeCalendarName Property (System.Globalization) | Microsoft Learn
Gets the native name of the calendar associated with the current DateTimeFormatInfo object.
property systemglobalizationmicrosoftlearn