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