无法从Hijri Date转换为Gregorian date（c＃）
现在我正在使用Hijri日期并尝试使用以下代码将它们转换为格里高利日期：
string HijriDate; string[] allFormats ={"yyyy/MM/dd","yyyy/M/d", "dd/MM/yyyy","d/M/yyyy", "dd/M/yyyy","d/MM/yyyy","yyyy-MM-dd", "yyyy-Md","dd-MM-yyyy","dM-yyyy", "dd-M-yyyy","d-MM-yyyy","yyyy MM dd", "yyyy M d","dd MM yyyy","d M yyyy", "dd M yyyy","d MM yyyy","MM/dd/yyyy"}; CultureInfo enCul = new CultureInfo("en-US"); CultureInfo arCul = new CultureInfo("ar-SA"); arCul.DateTimeFormat.Calendar = new System.Globalization.HijriCalendar(); DateTime tempDate = DateTime.ParseExact(HijriDate, allFormats, arCul.DateTimeFormat, DateTimeStyles.AllowWhiteSpaces); return tempDate.ToString("MM/dd/yyyy"); 此代码适用于所有日期，除了月份第30天的日期，如下所示：
’30 / 10/1433’，’30 / 12/1432’或’30 / 05/1433’等…..所以如何处理和转换该日期及其相应的Gregorian：S
这是代码，它在这段代码上运行良好我将函数的日期作为字符串而不是datetime返回，但你可以简单地使用reuturn datetime类型代替字符串
public string ConvertDateCalendar(DateTime DateConv, string Calendar, string DateLangCulture) { System.Globalization.DateTimeFormatInfo DTFormat; DateLangCulture = DateLangCulture.ToLower(); /// We can't have the hijri date writen in English. We will get a runtime error - LAITH - 11/13/2005 1:01:45 PM - if (Calendar == "Hijri" && DateLangCulture.StartsWith("en-")) { DateLangCulture = "ar-sa"; } /// Set the date time format to the given culture - LAITH - 11/13/2005 1:04:22 PM - DTFormat = new System.Globalization.CultureInfo(DateLangCulture, false).DateTimeFormat; /// Set the calendar property of the date time format to the given calendar - LAITH - 11/13/2005 1:04:52 PM - switch (Calendar) { case "Hijri": DTFormat.Calendar = new System.Globalization.HijriCalendar(); break; case "Gregorian": DTFormat.Calendar = new System.Globalization.GregorianCalendar(); break; default: return ""; } /// We format the date structure to whatever we want - LAITH - 11/13/2005 1:05:39 PM - DTFormat.ShortDatePattern = "dd/MM/yyyy"; return (DateConv.Date.ToString("f", DTFormat)); }
在这里调用此方法就是一个例子
ltrCalValue.Text = ConvertDateCalendar(CalHijri.SelectedDate, "Gregorian", "en-US");
打电话给Hijri
ltrCalValue.Text = ConvertDateCalendar(CalHijri.SelectedDate, "Hijri", "en-US");
一个月中一天的最大值可以通过DateTime.DaysInMonth(year, month)
并以这种方式使用它
int result = DateTime.DaysInMonth(2012, 2); // returns 29 being a leap year
但
int result = DateTime.DaysInMonth(2011, 2) // returns 28 being a non-leap year
在广济的第10个月和第12个月没有第30天，因此该日期无效。