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RichTextBox.Selection Property

Gets a TextSelection object containing the current selection in the RichTextBox.

Namespace:  System.Windows.Controls
Assembly:  PresentationFramework (in PresentationFramework.dll)

public TextSelection Selection { get; }

Property Value

Type: System.Windows.Documents.TextSelection
A TextSelection object containing the current selection in the RichTextBox.
The default returned TextSelection has an IsEmpty property value of True. An empty TextSelection renders as a caret in the text area with no selection.

Use the Select method to programmatically select content.

The following example illustrates the use of this property.

// Create a simple FlowDocument to serve as the content input for the construtor.
FlowDocument flowDoc = new FlowDocument(new Paragraph(new Run("Simple FlowDocument")));
// After this constructor is called, the new RichTextBox rtb will contain flowDoc.
RichTextBox rtb = new RichTextBox(flowDoc);
// This call will select the entire contents of the RichTextBox.
rtb.SelectAll();
// This call returns the current selection (which happens to be the entire contents 
// of the RichTextBox) as a TextSelection object.
TextSelection currentSelection = rtb.Selection;

More Code

Change Selection in a RichTextBox ProgrammaticallyThis example shows how to programmatically change the current selection in a RichTextBox. This selection is the same as if the user had selected the content by using the user interface.

.NET Framework

Supported in: 4.6, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, 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.

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