Blackout Dates

RadDateTimePicker allows you to disable certain dates in the calendar part of the control. To do this, set the BlackoutDates property of RadDateTimePicker to a collection of DateTime objects.

RadDateTimePicker control uses RadCalendar to show its calendar. The feature shown in this article is the same as the blackout dates of RadCalendar.

In order for a date from the BlackoutDates collection to get disabled in the calendar, its time portion should be set to the start of the day (usually 00:00:00.00 which is 12:00:00AM). Otherwise, the date won't get reflected in the UI.

Setting BlackoutDates

This section shows how to set the BlackoutDates in code behind.

Example 1: Defining RadDateTimePicker

<telerik:RadDateTimePicker x:Name="radDateTimePicker" /> 

Example 2: Setting the BlackoutDates property in code behind

public MainWindow() 
{        
    InitializeComponent(); 
 
    DateTime startDate = DateTime.Today; // note that this will return a date with its hours set to the start of the day (00:00:00). Example: 21.01.2020 00:00:00.00 
    var blackoutDates = new ObservableCollection<DateTime>() 
    { 
        startDate, 
        startDate.AddDays(1), 
        startDate.AddDays(2), 
        startDate.AddDays(3), 
    }; 
    this.radDateTimePicker.BlackoutDates = blackoutDates; 
} 

Public Sub New() 
    InitializeComponent() 
    Dim startDate As DateTime = DateTime.Today 
    Dim blackoutDates = New ObservableCollection(Of DateTime)() From { 
    startDate, 
    startDate.AddDays(1), 
    startDate.AddDays(2), 
    startDate.AddDays(3) 
    } 
    Me.radDateTimePicker.BlackoutDates = blackoutDates 
End Sub 

Data Binding BlackoutDates

This section shows how to data bind the BlackoutDates property.

Example 3: Setting up the model

public class MainViewModel 
{ 
    public ObservableCollection<DateTime> BlackoutDates { get; set; } 
 
    public MainViewModel() 
    { 
        DateTime startDate = DateTime.Today; // note that this will return a date with its hours set to the start of the day (00:00:00). Example: 21.01.2020 00:00:00.00 
        this.BlackoutDates = new ObservableCollection<DateTime>() 
        { 
            startDate, 
            startDate.AddDays(1), 
            startDate.AddDays(2), 
            startDate.AddDays(3), 
        }; 
    } 
} 

Public Class MainViewModel 
    Public Property BlackoutDates As ObservableCollection(Of DateTime) 
 
    Public Sub New() 
        Dim startDate As DateTime = DateTime.Today 
        Me.BlackoutDates = New ObservableCollection(Of DateTime)() From { 
            startDate, 
            startDate.AddDays(1), 
            startDate.AddDays(2), 
            startDate.AddDays(3) 
        } 
    End Sub 
End Class 

Example 4: Setting the data context

public MainWindow() 
{        
    InitializeComponent(); 
    this.DataContext = new MainViewModel();      
} 

Public Sub New() 
    InitializeComponent() 
    Me.DataContext = New MainViewModel() 
End Sub 

Example 5: Data binding the BlackoutDates property

<telerik:RadDateTimePicker BlackoutDates="{Binding BlackoutDates}" /> 

Find a runnable project that demonstrates how to use BlackoutDates in the online SDK repository.