---
title: "Change Selection in a RichTextBox Programmatically"
ms.date: "03/30/2017"
ms.custom: devdivchpfy22
description: Learn how to change selection in a RichTextBox programmatically.
dev_langs: 
  - "csharp"
  - "vb"
helpviewer_keywords: 
  - "changing selections in a text box [WPF]"
  - "changing selections in a RichTextBox [WPF]"
ms.assetid: f1213205-1ad7-4cd2-b115-460173cc5aa3
---
# Change Selection in a RichTextBox Programmatically
This example shows how to programmatically change the current selection in a <xref:System.Windows.Controls.RichTextBox>. This selection is the same as if the user had selected the content by using the user interface.  
  
## Code example for a RichTextBox control
 The following Extensible Application Markup Language (XAML) code describes a named <xref:System.Windows.Controls.RichTextBox> control with simple content.  
  
 [!code-xaml[RichTextBoxMiscSnippets_snip#ChangeSelectionProgrammaticalyExampleWholePage](~/samples/snippets/csharp/VS_Snippets_Wpf/RichTextBoxMiscSnippets_snip/CSharp/ChangeSelectionProgrammaticaly.xaml#changeselectionprogrammaticalyexamplewholepage)]  
  
## Code example to select text from a RichTextBox
 The following code programmatically selects some arbitrary text when the user clicks inside the <xref:System.Windows.Controls.RichTextBox>.  
  
 [!code-csharp[RichTextBoxMiscSnippets_snip#ChangeSelectionProgrammaticalyCodeExampleWholePage](~/samples/snippets/csharp/VS_Snippets_Wpf/RichTextBoxMiscSnippets_snip/CSharp/ChangeSelectionProgrammaticaly.xaml.cs#changeselectionprogrammaticalycodeexamplewholepage)]
 [!code-vb[RichTextBoxMiscSnippets_snip#ChangeSelectionProgrammaticalyCodeExampleWholePage](~/samples/snippets/visualbasic/VS_Snippets_Wpf/RichTextBoxMiscSnippets_snip/VisualBasic/ChangeSelectionProgrammaticaly.xaml.vb#changeselectionprogrammaticalycodeexamplewholepage)]  
  
## See also

- [RichTextBox Overview](richtextbox-overview.md)
- [TextBox Overview](textbox-overview.md)