find week ending date of last completed week

Question

For any given date, how would you find the week ending date of the last completed week, if your week runs from Sunday to Saturday?

Answer 1

.NET DateTimes expose a DayOfWeek property. You can leverage that in this case:

var currDay = DateTime.Today.DayOfWeek;
//currday is now an enumeration with Sunday=0, Saturday=6
//We can cast that to a number and subtract to get to the previous Saturday
var EndOfLastWeek = DateTime.Today.AddDays(((int)currDay+1)*-1);