How do I determine if a date lies between current week dates?

Question

In C#,

How we are check certain date with in week dates?

Eg: 6/02/2014

Current Weeks: 02/02/2014 - 08/02/2014

so this dates are with in above wee

Answer 1

Here's another solution :)

public static class DateExtensions
{
    private static void Swap(ref T one, ref T two)
    {
        var temp = one;
        one = two;
        two = temp;
    }

    public static bool IsFromSameWeek(this DateTime first, DateTime second, DayOfWeek firstDayOfWeek = DayOfWeek.Monday)
    {
        // sort dates
        if (first > second)
        {
            Swap(ref first, ref second);
        }

        var daysDiff = (second - first).TotalDays;
        if (daysDiff >= 7)
        {
            return false;
        }

        const int TotalDaysInWeek = 7;
        var adjustedDayOfWeekFirst = (int)first.DayOfWeek + (first.DayOfWeek < firstDayOfWeek ? TotalDaysInWeek : 0);
        var adjustedDayOfWeekSecond = (int)second.DayOfWeek + (second.DayOfWeek < firstDayOfWeek ? TotalDaysInWeek : 0);

        return adjustedDayOfWeekSecond >= adjustedDayOfWeekFirst;
    }
}

Upd: it appears to have at least twice better performance than @Atiris solution :)