Get week number in year?

CultureInfo.CreateSpecificCulture(“en-US”).Calendar.GetWeekOfYear(New Datetime(2021,10,25), CalendarWeekRule.FirstFullWeek,DayOfWeek.Monday)

ensure

  • System.Globalization is added to the imports
  • set the locals to your present locals

About the week rule enum also have a look here:

And here:

CultureInfo.InvariantCulture.Calendar.GetWeekOfYear(New Datetime(2021,10,25), CalendarWeekRule.FirstFourDayWeek,DayOfWeek.Monday)