ToggleButton.IsChecked Property
[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
Gets or sets whether the ToggleButton is checked.
Namespace: System.Windows.Controls.Primitives
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
[<TypeConverterAttribute(typeof(NullableBoolConverter))>] [<LocalizabilityAttribute(LocalizationCategory.None, Readability = Readability.Unreadable)>] member IsChecked : Nullable<bool> with get, set
<object IsChecked="Boolean"/>- or -<object IsChecked="{x:Null Markup Extension}"/>
Property Value
Type: System.Nullable(Boolean)true if the ToggleButton is checked; false if the ToggleButton is unchecked; otherwise a null reference (Nothing in Visual Basic). The default is false.
A control that inherits from ToggleButton determines its behavior when this property is a null reference (Nothing in Visual Basic).
CheckBox
When the IsThreeState property is set to true, a user can click a CheckBox to pick three possible states. The following table describes the three states of a CheckBox.
State of the CheckBox | Value of IsChecked |
|---|---|
Checked | true |
Unchecked | false |
Indeterminate | a null reference (Nothing in Visual Basic) |
If IsThreeState is false, you can still programmatically set this property to a null reference (Nothing in Visual Basic) to put the CheckBox in an indeterminate state, but the user cannot set the CheckBox to the indeterminate state through the user interface (UI).
RadioButton
If you set this property to a null reference (Nothing in Visual Basic) on a RadioButton, the RadioButton is unchecked.
Windows 8 Consumer Preview, Windows Server 8 Beta, Windows 7, Windows Server 2008 SP2, 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.
