Week numbers totally incorrect !!

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 Hi,

 

When I use the "Calendar.GetWeekOfYear" function (with "fr-BE" as CultureInfo and Monday as the first day of week) I get :

 

 Friday 31/12/2004 : week = 53

 Saturday 01/01/2005 : week = 1

 

  (see code sample here below)

 

 That's very interesting but totally incorrect !! Friday and Saturday of the same week should have the same week number ! Except in DOTNET..

 

 ISO 8601 say : Week 01 of a year is per definition the first week that has the Thursday in this year, which is equivalent to the week that contains the fourth day of January. In other words, the first week of a new year is the week that has the majority of its days in the new year.
 

 

 So the correct numbers are :

 

 Friday 31/12/2004 : week = 53

 Saturday 01/01/2005 : week = 53

 Manday 03/01/2005 : week = 1

 

  Is there any Patch for this bug ??

 

  Thanks,

 

 Steph.

 

 

Code sample :

 

CultureInfo myCI = new CultureInfo("fr-BE");

Calendar MyCal = myCI.Calendar;

CalendarWeekRule myCWR = myCI.DateTimeFormat.CalendarWeekRule;

DayOfWeek myFirstDOW = myCI.DateTimeFormat.FirstDayOfWeek;

 

MessageBox.Show(MyCal.GetWeekOfYear(Convert.ToDateTime("31/12/2004"), myCWR, myFirstDOW).ToString());

 

MessageBox.Show(MyCal.GetWeekOfYear(Convert.ToDateTime("01/01/2005"), myCWR, myFirstDOW).ToString());