how to calculate no of workingdays in month excluding Sundays ?

int year = 2011;
int month = 11;
int daysInMonth = 0;
int days = DateTime.DaysInMonth(year, month);
for (int i = 1; i <= days; i++)
{
    DateTime day = new DateTime(year, month, i);
    if (day.DayOfWeek != DayOfWeek.Sunday)
    {
        daysInMonth++;
    }
}

int year = 2011;
int monthsInYear = 12;
List<int> workDaysEveryMonth = new List<int>();
for (int month = 1; month <= monthsInYear; month++)
{
    int daysInMonth = 0;
    int days = DateTime.DaysInMonth(year, month);

    for (int day = 1; day <= days; day++)
    {
        DateTime currentDay = new DateTime(year, month, day);
        if (currentDay.DayOfWeek != DayOfWeek.Sunday)
        {
            daysInMonth++;
        }
    }

    workDaysEveryMonth.Add(daysInMonth);
}

string[] months = { "January", "Feburary", "March", "April", "May", "June",
                    "July", "August", "September", "October","November", "December" };
DateTime today = DateTime.Now;
Label1.Text = "There are " + workDaysEveryMonth[today.Month - 1] + " work days in " + months[today.Month - 1];