Get date of first Monday of the week? [duplicate]

Answer 1

var now = System.DateTime.Now;

var result = now.AddDays(-((now.DayOfWeek - System.Threading.Thread.CurrentThread.CurrentCulture.DateTimeFormat.FirstDayOfWeek + 7) % 7)).Date;

Probably will return you with Monday. Unless you are using a culture where Monday is not the first day of the week.