Skicka en ett årtal och veckonummer och få ut en DateTime som är den första dagen i den aktuella veckan.
public static DateTime getFirstDayInWeek(int iWeek, int iYear, System.Globalization.CultureInfo culture)
{
DateTime d = new DateTime(iYear, 1, 1);
d = d.AddDays((iWeek-1)*7);
int w = culture.Calendar.GetWeekOfYear(d, culture.DateTimeFormat.CalendarWeekRule, culture.DateTimeFormat.FirstDayOfWeek);
if (iWeek == 1 && (w > 50))
w = 0;
d = d.AddDays((iWeek-w) * 7);
int i = System.Convert.ToInt32(d.DayOfWeek);
d = d.AddDays(System.Convert.ToInt32(culture.DateTimeFormat.FirstDayOfWeek - i));
return d;
}
public static DateTime getFirstDayInWeek(int iWeek, int iYear, System.Globalization.CultureInfo culture)
{
DateTime d = new DateTime(iYear, 1, 1);
d = d.AddDays((iWeek-1)*7);
int w = culture.Calendar.GetWeekOfYear(d, culture.DateTimeFormat.CalendarWeekRule, culture.DateTimeFormat.FirstDayOfWeek);
if (iWeek == 1 && w > 50)
w = 0;
d = d.AddDays((iWeek-w) * 7);
int i = System.Convert.ToInt32(d.DayOfWeek);
int j = System.Convert.ToInt32(culture.DateTimeFormat.FirstDayOfWeek);
if (i < j)
i += 7;
d = d.AddDays(System.Convert.ToInt32(j - i));
return d;
}
256 ms totalt · 4 externa anrop · v20260731065814-full.86ec41c2
