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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;

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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