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CalendarBlackoutDatesCollection.AddDatesInPast Method

Adds all dates before Today to the collection.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

public void AddDatesInPast()

Use this method to prevent users from selecting dates that are in the past.

The following example creates a Calendar that includes a Loaded event handler.

<Calendar Name="calendar1" Loaded="calendar1_Loaded"/>

The following example shows the Loaded event handler. The event handler calls the AddDatesInPast method to make only future dates selectable.

private void calendar1_Loaded(object sender, RoutedEventArgs e)
{
    Calendar cal = sender as Calendar;
    cal.BlackoutDates.AddDatesInPast();
}

.NET Framework

Supported in: 4.5, 4

.NET Framework Client Profile

Supported in: 4

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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