问题
Now i am working with Hijri dates and trying to convert them to Gregorian dates using the following code :
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-M-d","dd-MM-yyyy","d-M-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");
this code is working fine with all dates except the date that has 30th day in month like the following :
'30/10/1433' , '30/12/1432' or '30/05/1433' etc ..... so how to handle and convert that date with its corresponding Gregorian :S
回答1:
here is the code it is working well now on this code I'm returning the date from the function as string not as datetime, but you can simply using reuturn datetime type instead on string
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));
}
To call this Method here are an example
ltrCalValue.Text = ConvertDateCalendar(CalHijri.SelectedDate, "Gregorian", "en-US");
to call the Hijri
ltrCalValue.Text = ConvertDateCalendar(CalHijri.SelectedDate, "Hijri", "en-US");
回答2:
Max Value of a days in a month can be calculated by DateTime.DaysInMonth(year, month)
and use it this way
int result = DateTime.DaysInMonth(2012, 2); // returns 29 being a leap year
but
int result = DateTime.DaysInMonth(2011, 2) // returns 28 being a non-leap year
回答3:
10th and 12nd months in Hirji don't have 30th day, so that date is invalid.
来源:https://stackoverflow.com/questions/11189807/cannot-convert-from-hijri-date-to-gregorian-date-c