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Blackout Dates

The blackout dates feature of the DateRangePicker component allows you to define a set of dates that will be disabled and the user cannot select them.

The list of disabled dates is assigned through the BlackoutDates property of RadDateRangePicker. The property expects a collection of DateTime objects.

Blackout the weekends of the current month

var weekends = new ObservableCollection<DateTime>(); 
var daysInMonth = DateTime.DaysInMonth(DateTime.Today.Year, DateTime.Today.Month); 
var startDate = new DateTime(DateTime.Today.Year, DateTime.Today.Month, 1); 
for (int i = 0; i < daysInMonth; i++) 
    var currentDate = startDate.AddDays(i); 
    if (currentDate.DayOfWeek == DayOfWeek.Saturday || currentDate.DayOfWeek == DayOfWeek.Sunday) 
this.dateRangePicker.BlackoutDates = weekends; 
Picture showing the blackout dates feature of WPF RadDateRangePicker

See Also

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