What is the method to activate the duration between startDate and endDate in SfCalendar?

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To activate the duration between startDate and endDate in SfCalendar, you can follow these steps:

1. Set the startDate and endDate properties of SfCalendar.

calendar.startDate = DateTime.now();
calendar.endDate = DateTime.now().add(Duration(days: 7)); // set end date as 7 days from now

1. Use a date range to highlight the duration between the startDate and endDate.

calendar.selectionMode = CalendarSelectionMode.range;
calendar.selectedRange = DateRange(calendar.startDate, calendar.endDate);

This will activate the duration between the startDate and endDate in SfCalendar.