C# 获取当前周WeekOfYear的方法

static int GetWeekOfYear()
        {
            CultureInfo ci = new CultureInfo("zh-CN");
            System.Globalization.Calendar cal = ci.Calendar;
            CalendarWeekRule cwr = ci.DateTimeFormat.CalendarWeekRule;
            DayOfWeek dow = DayOfWeek.Monday;
            int week = cal.GetWeekOfYear(DateTime.Now, cwr, dow);
            return week;
        }