AdaptiveTrigger Class

Definition

/// [Windows.Foundation.Metadata.Composable(Windows.UI.Xaml.IAdaptiveTriggerFactory, Windows.Foundation.Metadata.CompositionType.Public, 65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Static(Windows.UI.Xaml.IAdaptiveTriggerStatics, 65536, Windows.Foundation.UniversalApiContract)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.WebHostHidden]
class AdaptiveTrigger : StateTriggerBase

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
/// [Windows.Foundation.Metadata.WebHostHidden]
/// [Windows.Foundation.Metadata.Composable(Windows.UI.Xaml.IAdaptiveTriggerFactory, Windows.Foundation.Metadata.CompositionType.Public, 65536, "Windows.Foundation.UniversalApiContract")]
/// [Windows.Foundation.Metadata.Static(Windows.UI.Xaml.IAdaptiveTriggerStatics, 65536, "Windows.Foundation.UniversalApiContract")]
class AdaptiveTrigger : StateTriggerBase

[Windows.Foundation.Metadata.Composable(typeof(Windows.UI.Xaml.IAdaptiveTriggerFactory), Windows.Foundation.Metadata.CompositionType.Public, 65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Static(typeof(Windows.UI.Xaml.IAdaptiveTriggerStatics), 65536, typeof(Windows.Foundation.UniversalApiContract))]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.WebHostHidden]
public class AdaptiveTrigger : StateTriggerBase

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
[Windows.Foundation.Metadata.WebHostHidden]
[Windows.Foundation.Metadata.Composable(typeof(Windows.UI.Xaml.IAdaptiveTriggerFactory), Windows.Foundation.Metadata.CompositionType.Public, 65536, "Windows.Foundation.UniversalApiContract")]
[Windows.Foundation.Metadata.Static(typeof(Windows.UI.Xaml.IAdaptiveTriggerStatics), 65536, "Windows.Foundation.UniversalApiContract")]
public class AdaptiveTrigger : StateTriggerBase

Public Class AdaptiveTrigger
Inherits StateTriggerBase

<AdaptiveTrigger .../>

Inheritance

Object

DependencyObject

StateTriggerBase

AdaptiveTrigger

Attributes

ComposableAttribute ContractVersionAttribute MarshalingBehaviorAttribute StaticAttribute ThreadingAttribute WebHostHiddenAttribute

Windows 10 requirements

Examples

This example shows how to use the StateTriggers property with an AdaptiveTrigger to create a declarative rule in XAML markup based on window size. By default, the StackPanel orientation is Vertical. When the window width is >= 720 effective pixels, the VisualState change is triggered, and the StackPanel orientation is changed to Horizontal.

<Page>
    <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
        <VisualStateManager.VisualStateGroups>
            <VisualStateGroup>
                <VisualState>
                    <VisualState.StateTriggers>
                    <!--VisualState to be triggered when window width is >=720 effective pixels.-->
                        <AdaptiveTrigger MinWindowWidth="720"/>
                    </VisualState.StateTriggers>

                    <VisualState.Setters>
                        <Setter Target="myPanel.Orientation" Value="Horizontal"/>
                    </VisualState.Setters>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
        <StackPanel x:Name="myPanel" Orientation="Vertical">
            <TextBlock Text="This is a block of text. It is text block 1. " 
                       Style="{ThemeResource BodyTextBlockStyle}"/>
            <TextBlock Text="This is a block of text. It is text block 2. " 
                       Style="{ThemeResource BodyTextBlockStyle}"/>
            <TextBlock Text="This is a block of text. It is text block 3. " 
                       Style="{ThemeResource BodyTextBlockStyle}"/>
        </StackPanel>
    </Grid>
</Page>

Remarks

Use AdaptiveTriggers to create rules that automatically trigger a VisualState change when the window is a specified height or width. When you use AdaptiveTriggers in your XAML markup, you don't need to handle the Window.SizeChanged event and call VisualStateManager.GoToState in your code. Also, when you use AdaptiveTriggers in your VisualStateManager, you can see the effects of these adaptive changes directly on the XAML design surface in Microsoft Visual Studio.

You can use the MinWindowWidth and MinWindowHeight properties either independently or in conjunction with each other. This XAML shows an example of using both properties together. The trigger indicates that the corresponding VisualState is to be applied when the current window width is >= 720 effective pixels AND the current window height is >= 900 effective pixels.

<AdaptiveTrigger MinWindowWidth="720" MinWindowHeight="900"/>

For more examples, see the XAML Responsive Techniques sample.

Constructors

Properties

Methods

Applies to

See also

• StateTriggerBase
• VisualState
• StateTriggers