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25 lines
1.6 KiB
Markdown
25 lines
1.6 KiB
Markdown
---
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title: "How to: Change the FlowDirection of Content Programmatically"
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ms.date: "03/30/2017"
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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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- "FlowDirection property [WPF], changing programmatically"
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- "documents [WPF], changing FlowDirection property programmatically"
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ms.assetid: 02f5a8ba-f8c0-4e5a-84b9-4c5bf12922a2
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---
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# How to: Change the FlowDirection of Content Programmatically
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This example shows how to programmatically change the <xref:System.Windows.FrameworkElement.FlowDirection%2A> property of a <xref:System.Windows.Controls.FlowDocumentReader>.
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## Example
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Two <xref:System.Windows.Controls.Button> elements are created, each representing one of the possible values of <xref:System.Windows.FlowDirection>. When a button is clicked, the associated property value is applied to the contents of a <xref:System.Windows.Controls.FlowDocumentReader> named `tf1`. The property value is also written to a <xref:System.Windows.Controls.TextBlock> named `txt1`.
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[!code-xaml[FlowDirectionSnippets#_FlowDirectionXAML](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDirectionSnippets/CSharp/Window1.xaml#_flowdirectionxaml)]
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## Example
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The events associated with the button clicks defined above are handled in a C# code-behind file.
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[!code-csharp[FlowDirectionSnippets#_FlowDirection](~/samples/snippets/csharp/VS_Snippets_Wpf/FlowDirectionSnippets/CSharp/Window1.xaml.cs#_flowdirection)]
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[!code-vb[FlowDirectionSnippets#_FlowDirection](~/samples/snippets/visualbasic/VS_Snippets_Wpf/FlowDirectionSnippets/VisualBasic/Window1.xaml.vb#_flowdirection)]
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