Style.TargetType Property
Gets or sets the type for which this style is intended.
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
You can set a style on any element that derives from FrameworkElement or FrameworkContentElement. Therefore, your target type can be any of those elements. However, if you create a style with a TargetType property and base it on another style that also defines a TargetType property, the target type of the derived style must be the same as or be derived from the target type of the base style.
If you do not specify a TargetType, then you must specify an x:Key for your Style and also qualify the properties in your style with a class name.
The following example defines a style that will be applied to all instances of the TextBlock element.
<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>
Setting the TargetType property to the TextBlock type without setting an x:Key implicitly sets the x:Key to {x:Type TextBlock}. This also means that if you give the above Style an x:Key value of anything other than {x:Type TextBlock}, the Style would not be applied to all TextBlock elements automatically. Instead, you need to apply the style to the TextBlock elements explicitly.
Many WPF controls consist of a combination of other WPF controls, so creating a style that applies to all controls of a type can have broad impact. For instance, if you create a style that targets the TextBox controls in a Canvas, the style is applied to all TextBox controls in the canvas, even if the TextBox is part of another control, such as a ComboBox.
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
