How to find the 3rd Friday in a month with C#?

Question

Given a date (of type DateTime), how do I find the 3rd Friday in the month of that date?

Answer 1

    public static bool IsThirdWednesday(DateTime inputDate)
    {
        DateTime firstDayOfMonth = new DateTime(inputDate.Year, inputDate.Month, 1);
        DateTime firstDayOfNextMonth = firstDayOfMonth.AddMonths(1);

        int wednesdayCount = 0;
        while(firstDayOfMonth < firstDayOfNextMonth)
        {
            if (firstDayOfMonth.DayOfWeek == DayOfWeek.Wednesday)
                wednesdayCount++;

            if (wednesdayCount == 3)
            {
                if (inputDate == firstDayOfMonth)
                    return true;
                else
                    return false;
              
            }

            firstDayOfMonth = firstDayOfMonth.AddDays(1);
        }

        return false;
    }