C# Get Next Nth Fridays Date From Todays Date

Question

I have got the following, but its not quite what I need now - It returns the dates of all the Fridays for the month passed in.

    public static IEnumerable<DateTime> ReturnNextNthWeekdaysOfMonth(DateTime dt, DayOfWeek weekday, int amounttoshow = 4)
    {
        var days =
            Enumerable.Range(1, DateTime.DaysInMonth(dt.Year, dt.Month)).Select(
                day => new DateTime(dt.Year, dt.Month, day));

        var weekdays = from day in days
                       where day.DayOfWeek == weekday
                       orderby day.Day ascending
                       select day;

        return weekdays.Take(amounttoshow);
    }

HOWEVER I now want to return the next Nth Fridays dates from todays date, irrelavant of the month they are in.

And I'm a bit stuck... Any help greatly appreciated.

Answer 1

public static IEnumerable<DateTime> ReturnNextNthWeekdaysOfMonth(DateTime dt, DayOfWeek weekday, int amounttoshow = 4)
{
    // Find the first future occurance of the day.
    while(dt.DayOfWeek != weekday)
        dt = dt.AddDays(1);

    // Create the entire range of dates required. 
    return Enumerable.Range(0, amounttoshow).Select(i => dt.AddDays(i * 7));
}

This first looks for the next day matching weekday then proceeds to create amounttoshow DateTime instances each of which is 7 days further than the previous, starting at the found date.