CheckBox Class
Updated: February 2009
Represents a control that a user can select and clear.
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation
CheckBox controls inherit from ToggleButton and can have three states: checked (selected), unchecked (cleared), and indeterminate.
Content Model: CheckBox is a ContentControl. Its content property is Content. For more information on the content model for CheckBox, see Controls Content Model Overview.
Dependency properties for this control might be set by the control’s default style. If a property is set by a default style, the property might change from its default value when the control appears in the application. The default style is determined by which desktop theme is used when the application is running. For more information, see Themes.
The following example creates a CheckBox and handles the Checked, Unchecked, and Indeterminate events.
<Grid> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> <RowDefinition Height="Auto"/> </Grid.RowDefinitions> <TextBlock Text="CheckBox Demonstration" Margin="0,20,10,20" FontFamily="Verdana" FontSize="18" FontWeight="Bold" Foreground="#FF5C9AC9" Grid.Row="0"/> <CheckBox x:Name="cb1" Grid.Row="1" Margin="5,0,0,0" Content="Three-state CheckBox" IsThreeState="True" Checked="HandleCheck" Unchecked="HandleUnchecked" Indeterminate="HandleThirdState" /> <TextBlock x:Name="text1" Grid.Row="2" Margin="5,0,0,0" /> </Grid>
Private Sub HandleCheck(ByVal sender As Object, ByVal e As RoutedEventArgs) text1.Text = "The CheckBox is checked." End Sub Private Sub HandleUnchecked(ByVal sender As Object, ByVal e As RoutedEventArgs) text1.Text = "The CheckBox is unchecked." End Sub Private Sub HandleThirdState(ByVal sender As Object, ByVal e As RoutedEventArgs) text1.Text = "The CheckBox is in the indeterminate state." End Sub
System.Windows.Threading.DispatcherObject
System.Windows.DependencyObject
System.Windows.Media.Visual
System.Windows.UIElement
System.Windows.FrameworkElement
System.Windows.Controls.Control
System.Windows.Controls.ContentControl
System.Windows.Controls.Primitives.ButtonBase
System.Windows.Controls.Primitives.ToggleButton
System.Windows.Controls.CheckBox
Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.