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32 lines
1.6 KiB
Markdown
32 lines
1.6 KiB
Markdown
---
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title: "How to: Override the Panel OnRender Method"
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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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f1_keywords:
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- "overriding OnRender method"
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- "Panel control, overriding OnRender method"
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- "OnRender method"
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- "controls, Panel, overriding OnRender method"
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helpviewer_keywords:
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- "overriding OnRender method of Panel control [WPF]"
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- "OnRender method [WPF], overriding"
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- "Panel control [WPF], overriding OnRender method"
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ms.assetid: 57397834-a085-4e36-90ab-416fad98f341
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---
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# How to: Override the Panel OnRender Method
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This example shows how to override the <xref:System.Windows.Controls.Panel.OnRender%2A> method of <xref:System.Windows.Controls.Panel> in order to add custom graphical effects to a layout element.
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## Example
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Use the <xref:System.Windows.Controls.Panel.OnRender%2A> method in order to add graphical effects to a rendered panel element. For example, you can use this method to add custom border or background effects. A <xref:System.Windows.Media.DrawingContext> object is passed as an argument, which provides methods for drawing shapes, text, images, or videos. As a result, this method is useful for customization of a panel object.
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[!code-csharp[LightWeightCustomPanel#1](~/samples/snippets/csharp/VS_Snippets_Wpf/LightWeightCustomPanel/CSharp/OffsetPanel.cs#1)]
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[!code-vb[LightWeightCustomPanel#1](~/samples/snippets/visualbasic/VS_Snippets_Wpf/LightWeightCustomPanel/visualbasic/offsetpanel.vb#1)]
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## See also
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- <xref:System.Windows.Controls.Panel>
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- [Panels Overview](panels-overview.md)
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- [How-to Topics](panel-how-to-topics.md)
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