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DatePicker.IsDropDownOpen Property

Gets or sets a value that indicates whether the drop-down Calendar is open or closed.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

public bool IsDropDownOpen { get; set; }
<DatePicker IsDropDownOpen="bool"/>

Property Value

Type: System.Boolean
true if the Calendar is open; otherwise, false. The default is false.

Identifier field


Metadata properties set to true


Setting this property will cause the Calendar drop-down to open or close.

The following example creates a DatePicker that is initialized with its calendar open and displays July 7, 2009.

<DatePicker IsDropDownOpen="True"

.NET Framework

Supported in: 4.6, 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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