Gets the number representing the day of the week to display in the first column of the DateChooser control.
The value must be in the range 0 to 6, where 0 corresponds to Sunday, the first element of the dayNames Array.
Setting this property changes the order of the day columns. For example, setting it to 1 makes Monday the first column in the control.
The default value is 0 (Sunday).
'Declaration
Protected Read Property firstDayOfWeek As Integer