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32 lines
2.0 KiB
Markdown
32 lines
2.0 KiB
Markdown
---
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title: "How to: Apply Stretch Properties to the Contents of a Viewbox"
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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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- "StretchDirection properties [WPF]"
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- "Stretch properties [WPF]"
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- "controls [WPF], Viewbox"
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- "Viewbox control [WPF]"
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ms.assetid: b9c22ef4-bce4-4300-9e0c-8260b7db83cc
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---
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# How to: Apply Stretch Properties to the Contents of a Viewbox
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## Example
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This example shows how to change the value of the <xref:System.Windows.Controls.Viewbox.StretchDirection%2A> and <xref:System.Windows.Controls.Viewbox.Stretch%2A> properties of a <xref:System.Windows.Controls.Viewbox>.
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The first example uses Extensible Application Markup Language (XAML) to define a <xref:System.Windows.Controls.Viewbox> element. It assigns a <xref:System.Windows.FrameworkElement.MaxWidth%2A> and <xref:System.Windows.FrameworkElement.MaxHeight%2A> of 400. The example nests an <xref:System.Windows.Controls.Image> element within the <xref:System.Windows.Controls.Viewbox>. <xref:System.Windows.Controls.Button> elements that correspond to the property values for the <xref:System.Windows.Controls.Viewbox.Stretch%2A> and <xref:System.Windows.Controls.StretchDirection> enumerations manipulate the stretching behavior of the nested <xref:System.Windows.Controls.Image>.
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[!code-xaml[viewboxStretchLayoutSamp#1](~/samples/snippets/csharp/VS_Snippets_Wpf/viewboxStretchLayoutSamp/CSharp/Window1.xaml#1)]
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The following code-behind file handles the <xref:System.Windows.Controls.Button> <xref:System.Windows.Controls.Primitives.ButtonBase.Click> events that the previous XAML example defines.
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[!code-csharp[viewboxStretchLayoutSamp#2](~/samples/snippets/csharp/VS_Snippets_Wpf/viewboxStretchLayoutSamp/CSharp/Window1.xaml.cs#2)]
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[!code-vb[viewboxStretchLayoutSamp#2](~/samples/snippets/visualbasic/VS_Snippets_Wpf/viewboxStretchLayoutSamp/VisualBasic/Window1.xaml.vb#2)]
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## See also
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- <xref:System.Windows.Controls.Viewbox>
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- <xref:System.Windows.Media.Stretch>
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- <xref:System.Windows.Controls.StretchDirection>
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