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dotnet-desktop-guide/framework/wpf/controls/change-selection-in-a-richtextbox-programmatically.md
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---
title: "Change Selection in a RichTextBox Programmatically"
ms.date: "03/30/2017"
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.
## Example
The following [!INCLUDE[TLA#tla_xaml](../../../includes/tlasharptla-xaml-md.md)] 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)]
## Example
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)