How to get last Friday of month(s) using .NET

Question

I have a function that returns me only the fridays from a range of dates

public static List GetDates(DateTime startDate, int weeks)
{
    int         


        

Answer 1

Call the below function by sending the date as parameter, in which it extracts the month and year from the date parameter and returns the last Friday of that month

public DateTime GetLastFridayOfMonth(DateTime dt)
{
      DateTime dtMaxValue = DateTime.MaxValue;
      DateTime dtLastDayOfMonth = new DateTime(dt.Year, dt.Month, DateTime.DaysInMonth(dt.Year, dt.Month));

      while (dtMaxValue == DateTime.MaxValue)
      {
           // Returns if the decremented day is the fisrt Friday from last(ie our last Friday)
           if (dtMaxValue == DateTime.MaxValue && dtLastDayOfMonth.DayOfWeek == DayOfWeek.Friday)
               return dtLastDayOfMonth;
           // Decrements last day by one
           else
              dtLastDayOfMonth = dtLastDayOfMonth.AddDays(-1.0);
      }
      return dtLastDayOfMonth;
}