MonthDays Constructor

public MonthDays(
	int day
)

Public Sub New ( 
	day As Integer
)

public:
MonthDays(
	int day
)

// Select day 15 of the month
MonthDays mDays = new MonthDays(15);

// ...

if (mDays[15])
{
  Console.WriteLine("Day 15 is selected.");
}
else
  mDays[15] = true;