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25 lines
1.5 KiB
Markdown
25 lines
1.5 KiB
Markdown
---
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title: "How to: Use a Cached Element as a Brush"
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ms.date: "03/30/2017"
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helpviewer_keywords:
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- "BitmapCache [WPF], using"
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- "cached element [WPF], use as a brush"
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- "BitmapCacheBrush [WPF], using"
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- "CacheMode [WPF], using"
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ms.assetid: d36e944a-866e-4baf-98c4-fd6a75f6fdd0
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---
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# How to: Use a Cached Element as a Brush
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Use the <xref:System.Windows.Media.BitmapCacheBrush> class to reuse a cached element efficiently. To cache an element, create a new instance of the <xref:System.Windows.Media.BitmapCache> class and assign it to the element's <xref:System.Windows.UIElement.CacheMode%2A> property.
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## Example
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The following code example shows how to reuse a cached element. The cached element is an <xref:System.Windows.Controls.Image> control that displays a large image. The <xref:System.Windows.Controls.Image> control is cached as a bitmap by using the <xref:System.Windows.Media.BitmapCache> class, and the cache is reused by assigning it to a <xref:System.Windows.Media.BitmapCacheBrush>. The brush is assigned to the background of twenty-five buttons to show efficient reuse.
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[!code-xaml[System.Windows.Media.BitmapCacheBrush#_BitmapCacheBrushXAML](~/samples/snippets/csharp/VS_Snippets_Wpf/system.windows.media.bitmapcachebrush/cs/window1.xaml#_bitmapcachebrushxaml)]
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## See also
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- <xref:System.Windows.Media.BitmapCache>
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- <xref:System.Windows.Media.BitmapCacheBrush>
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- <xref:System.Windows.UIElement.CacheMode%2A>
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- [How to: Improve Rendering Performance by Caching an Element](how-to-improve-rendering-performance-by-caching-an-element.md)
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