Group by Week of year (Week number) in Linq to SQL

Question

In regular SQL i could do something like

SELECT * From T GROUP BY DATEPART(wk, T.Date)

How can i do that in Linq to SQL ?

The follo

Answer 1

If you are concerned about the culture you are in the following code will take that into account:

var ci = CultureInfo.CurrentCulture;
var cal = ci.Calendar;
var rule = ci.DateTimeFormat.CalendarWeekRule;
var firstDayOfWeek = ci.DateTimeFormat.FirstDayOfWeek;

var groups = from F in DB.T
             group F by cal.GetWeekOfYear(F, rule, firstDayOfWeek) into R
             select R;