Setter.Value Property (System.Windows)

Value Property

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This page is specific to

Microsoft Visual Studio 2010/.NET Framework 4

Other versions are also available for the following:

.NET Framework Class Library

Setter..::.Value Property

Gets or sets the value to apply to the property that is specified by this Setter.

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

Visual Basic

<LocalizabilityAttribute(LocalizationCategory.None, Readability := Readability.Unreadable)> _
<TypeConverterAttribute(GetType(SetterTriggerConditionValueConverter))> _
Public Property Value As Object
    Get
    Set

[LocalizabilityAttribute(LocalizationCategory.None, Readability = Readability.Unreadable)]
[TypeConverterAttribute(typeof(SetterTriggerConditionValueConverter))]
public Object Value { get; set; }

Visual C++

[LocalizabilityAttribute(LocalizationCategory::None, Readability = Readability::Unreadable)]
[TypeConverterAttribute(typeof(SetterTriggerConditionValueConverter))]
public:
property Object^ Value {
    Object^ get ();
    void set (Object^ value);
}

[<LocalizabilityAttribute(LocalizationCategory.None, Readability = Readability.Unreadable)>]
[<TypeConverterAttribute(typeof(SetterTriggerConditionValueConverter))>]
member Value : Object with get, set

XAML Property Element Usage

<object>
  <object.Value>
    value
  </object.Value>
</object>

XAML Attribute Usage

<object Value="value"/>

XAML Values

value: An object or a markup extension. See StaticResource Markup Extension.

Note that you must specify both the Property and Value properties on a Setter or an exception will be thrown.

Data binding and dynamic resources within the object is supported if the specified value is a Freezable object. See Binding Markup Extension and DynamicResource Markup Extension.

Property Value

Type: System..::.Object
The default value is UnsetValue.

Exceptions

Exception	Condition
ArgumentException	If the specified Value is set to UnsetValue.

Examples

The following example defines a Style that will be applied to every TextBlock element. For the complete example, see Introduction to Styling and Templating Sample.

XAML

<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 defines a Style with Setters that reference system resources.

XAML

<Style x:Key="SystemResStyle" TargetType="{x:Type Button}">
    <Setter Property = "Background" Value= 
                       "{DynamicResource {x:Static SystemColors.ControlLightBrushKey}}"/>
    <Setter Property = "Foreground" Value= 
                       "{DynamicResource {x:Static SystemColors.ControlDarkBrushKey}}"/>
    <Setter Property = "FontSize" Value= 
                       "{DynamicResource {x:Static SystemFonts.IconFontSizeKey}}"/>
    <Setter Property = "FontWeight" Value= 
                       "{DynamicResource {x:Static SystemFonts.MessageFontWeightKey}}"/>
    <Setter Property = "FontFamily" Value= 
                       "{DynamicResource {x:Static SystemFonts.CaptionFontFamilyKey}}"/>
</Style>

The following example defines a Style for the RepeatButton.

XAML

        <Style x:Key="Slider_Thumb" TargetType="{x:Type Thumb}">
            <Setter Property="OverridesDefaultStyle" Value="true" />
            <Setter Property="Width" Value="14" />
            <Setter Property="Height" Value="14" />
            <Setter Property="Template">
                <Setter.Value>
                    <ControlTemplate TargetType="{x:Type Thumb}">
                        <Grid Width="14" Height="14">
                            <Ellipse Fill="{TemplateBinding Foreground}" />
                            <Ellipse Stroke="{TemplateBinding BorderBrush}" StrokeThickness="1" x:Name="ThumbCover" >
                                <Ellipse.Fill>
                                    <LinearGradientBrush  EndPoint="0,1" StartPoint="0,0">
                                        <LinearGradientBrush.GradientStops>
                                            <GradientStop Color="#CCFFFFFF" Offset="0" />
                                            <GradientStop Color="#00000000" Offset=".5" />
                                            <GradientStop Color="#66000000" Offset="1" />
                                        </LinearGradientBrush.GradientStops>
                                    </LinearGradientBrush>
                                </Ellipse.Fill>
                            </Ellipse>
                        </Grid>
                        <ControlTemplate.Triggers>
                            <Trigger Property="IsDragging" Value="true">
                                <Setter TargetName="ThumbCover" Property="Fill">
                                    <Setter.Value>
                                        <LinearGradientBrush  EndPoint="0,1" StartPoint="0,0">
                                            <LinearGradientBrush.GradientStops>
                                                <GradientStop Color="#CCFFFFFF" Offset="1" />
                                                <GradientStop Color="#00000000" Offset=".5" />
                                                <GradientStop Color="#66000000" Offset="0" />
                                            </LinearGradientBrush.GradientStops>
                                        </LinearGradientBrush>
                                    </Setter.Value>
                                </Setter>
                            </Trigger>
                        </ControlTemplate.Triggers>
                    </ControlTemplate>
                </Setter.Value>
            </Setter>
        </Style>

The following example shows a Value property that uses the Binding declaration. For the complete example, see Binding Validation Sample.

XAML

<Style x:Key="textBoxInError" TargetType="{x:Type TextBox}">
  <Style.Triggers>
    <Trigger Property="Validation.HasError" Value="true">
      <Setter Property="ToolTip"
        Value="{Binding RelativeSource={x:Static RelativeSource.Self},
                        Path=(Validation.Errors)[0].ErrorContent}"/>
    </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.

Reference

Setter Class

System.Windows Namespace

Property

Other Resources

Styling and Templating

Data Templating Overview