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Style.Triggers Property

.NET Framework 4

Gets a collection of TriggerBase objects that apply property values based on specified conditions.

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

Syntax

C++

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public TriggerCollection Triggers { get; }

XAML Property Element Usage

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<object>
  <object.Triggers>
    oneOrMoreTriggers
  </object.Triggers>
</object>

XAML Values

oneOrMoreTriggers: Zero or more object elements that are classes deriving from TriggerBase.

Property Value

Type: System.Windows.TriggerCollection
A collection of TriggerBase objects. The default is an empty collection.

Remarks

The WPF styling and templating model enables you to specify triggers within your Style. Essentially, triggers are objects that enable you to apply changes when certain conditions (such as when a certain property value becomes true, or when an event occurs) are satisfied.

Examples

The following example shows a named Style available to Button controls. The Style defines a Trigger element that changes the Foreground property of a button when the IsPressed property is true.

XAML

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<Style x:Key="Triggers" TargetType="Button">
    <Style.Triggers>
    <Trigger Property="IsPressed" Value="true">
        <Setter Property = "Foreground" Value="Green"/>
    </Trigger>
    </Style.Triggers>
</Style>

Version Information

.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Platforms

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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