Calculate previous week's start and end date

Question

What is the best way to calculate the previous week\'s start and end date in C#? I.e. today 18 March would result in 9 March (Monday last week) and 15 March (Sunday last we

Answer 1

You can skip the while loop and use

DateTime mondayOfLastWeek = date.AddDays( -(int)date.DayOfWeek - 6 );

This assumes you're using Monday as the first day of the week.