TextBoxBase.SelectionBrush Property
[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]
Gets or sets the brush that highlights selected text.
Namespace: System.Windows.Controls.Primitives
Assembly: PresentationFramework (in PresentationFramework.dll)
You can specify the brush that highlights selected text by setting the SelectionBrush and SelectionOpacity properties. The SelectionOpacity property specifies the opacity of the SelectionBrush.
The following example creates a TextBox and adds the text, "This is some text." The example sets the SelectionBrush property to red and the SelectionOpacity property to 0.5 to customize the appearance of selected text.
<TextBox SelectionBrush="Red" SelectionOpacity="0.5" Foreground="Blue" CaretBrush="Blue"> This is some text. </TextBox>
The following illustration shows the TextBox from the preceding example with its text selected.

Windows 8 Consumer Preview, Windows Server 8 Beta, Windows 7, Windows Server 2008 SP2, 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.