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36 lines
2.2 KiB
Markdown
36 lines
2.2 KiB
Markdown
---
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title: "How to: Partition Space by Using the DockPanel Element"
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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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- "cpp"
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helpviewer_keywords:
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- "controls [WPF], DockPanel"
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- "DockPanel control [WPF], partitioning space"
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- "partitioning space [WPF]"
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ms.assetid: a219b9e5-b205-4438-89b5-0a137ac463ab
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---
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# How to: Partition Space by Using the DockPanel Element
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The following example creates a simple [!INCLUDE[TLA#tla_ui](../../../includes/tlasharptla-ui-md.md)] framework using a <xref:System.Windows.Controls.DockPanel> element. The <xref:System.Windows.Controls.DockPanel> partitions available space to its child elements.
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## Example
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This example uses the <xref:System.Windows.Controls.DockPanel.Dock%2A> property, which is an attached property, to dock two identical <xref:System.Windows.Controls.Border> elements at the <xref:System.Windows.Controls.Dock.Top> of the partitioned space. A third <xref:System.Windows.Controls.Border> element is docked to the <xref:System.Windows.Controls.Dock.Left>, with its width set to 200 pixels. A fourth <xref:System.Windows.Controls.Border> is docked to the <xref:System.Windows.Controls.Dock.Bottom> of the screen. The last <xref:System.Windows.Controls.Border> element automatically fills the remaining space.
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[!code-cpp[DockPanelOvwSample#1](~/samples/snippets/cpp/VS_Snippets_Wpf/DockPanelOvwSample/CPP/DockPanel_Ovw_Sample.cpp#1)]
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[!code-csharp[DockPanelOvwSample#1](~/samples/snippets/csharp/VS_Snippets_Wpf/DockPanelOvwSample/CSharp/DockPanel_Ovw_Sample.cs#1)]
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[!code-vb[DockPanelOvwSample#1](~/samples/snippets/visualbasic/VS_Snippets_Wpf/DockPanelOvwSample/VisualBasic/dockpanel_vb.vb#1)]
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[!code-xaml[DockPanelOvwSample#1](~/samples/snippets/xaml/VS_Snippets_Wpf/DockPanelOvwSample/XAML/default.xaml#1)]
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> [!NOTE]
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> By default, the last child of a <xref:System.Windows.Controls.DockPanel> element fills the remaining unallocated space. If you do not want this behavior, set `LastChildFill="False"`.
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The compiled application yields a new UI that looks like this.
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## See also
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- <xref:System.Windows.Controls.DockPanel>
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- [Panels Overview](panels-overview.md)
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