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Setter Class

Represents a setter that applies a property value.

Namespace: System.Windows
Assembly: PresentationFramework (in presentationframework.dll)
XML Namespace:  http://schemas.microsoft.com/winfx/2006/xaml/presentation

public class Setter : SetterBase
public class Setter extends SetterBase
public class Setter extends SetterBase

Styles and the different types of triggers (classes that inherit from TriggerBase) use Setters to apply property values.

Note that you must specify both the Property and Value properties on a Setter for the setter to be meaningful. If one or both properties are not set, an exception will be thrown.

The following example defines a Style that will be applied to every TextBlock element. This Style applies values to several TextBlock properties with the use of Setters.

<Style TargetType="{x:Type TextBlock}">
  <Setter Property="FontFamily" Value="Segoe Black" />
  <Setter Property="HorizontalAlignment" Value="Center" />
  <Setter Property="FontSize" Value="12pt" />
  <Setter Property="Foreground" Value="#777777" />
</Style>

The following example contains two triggers. The first changes the Background property of a Button when the IsMouseOver property is true. The second changes the Foreground property of a button when the IsPressed property is true.

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

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0

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