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34 lines
2.3 KiB
Markdown
34 lines
2.3 KiB
Markdown
---
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title: "How to: Scroll Content by Using the IScrollInfo Interface"
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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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- "ScrollViewer control [WPF], scrolling content"
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- "scrolling content [WPF]"
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- "IScrollInfo interface [WPF]"
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ms.assetid: d8700bef-a3f8-4c12-9de2-fc3b79f32cd3
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---
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# How to: Scroll Content by Using the IScrollInfo Interface
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This example shows how to scroll content by using the <xref:System.Windows.Controls.Primitives.IScrollInfo> interface.
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## Example
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The following example demonstrates the features of the <xref:System.Windows.Controls.Primitives.IScrollInfo> interface. The example creates a <xref:System.Windows.Controls.StackPanel> element in [!INCLUDE[TLA#tla_xaml](../../../includes/tlasharptla-xaml-md.md)] that is nested in a parent <xref:System.Windows.Controls.ScrollViewer>. The child elements of the <xref:System.Windows.Controls.StackPanel> can be scrolled logically by using the methods defined by the <xref:System.Windows.Controls.Primitives.IScrollInfo> interface and cast to the instance of <xref:System.Windows.Controls.StackPanel> (`sp1`) in code.
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[!code-xaml[IScrollInfoMethods#2](~/samples/snippets/csharp/VS_Snippets_Wpf/IScrollInfoMethods/CSharp/Window1.xaml#2)]
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Each <xref:System.Windows.Controls.Button> in the [!INCLUDE[TLA2#tla_xaml](../../../includes/tla2sharptla-xaml-md.md)] file triggers an associated custom method that controls scrolling behavior in <xref:System.Windows.Controls.StackPanel>. The following example shows how to use the <xref:System.Windows.Controls.Primitives.IScrollInfo.LineUp%2A> and <xref:System.Windows.Controls.Primitives.IScrollInfo.LineDown%2A> methods; it also generically shows how to use all the positioning methods that the <xref:System.Windows.Controls.Primitives.IScrollInfo> class defines.
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[!code-csharp[IScrollInfoMethods#3](~/samples/snippets/csharp/VS_Snippets_Wpf/IScrollInfoMethods/CSharp/Window1.xaml.cs#3)]
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[!code-vb[IScrollInfoMethods#3](~/samples/snippets/visualbasic/VS_Snippets_Wpf/IScrollInfoMethods/VisualBasic/Window1.xaml.vb#3)]
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## See also
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- <xref:System.Windows.Controls.ScrollViewer>
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- <xref:System.Windows.Controls.Primitives.IScrollInfo>
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- <xref:System.Windows.Controls.StackPanel>
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- [ScrollViewer Overview](scrollviewer-overview.md)
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- [How-to Topics](scrollviewer-how-to-topics.md)
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- [Panels Overview](panels-overview.md)
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