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22 lines
1.1 KiB
Markdown
22 lines
1.1 KiB
Markdown
---
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title: "How to: Implement a CompositeCollection"
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ms.date: "03/30/2017"
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helpviewer_keywords:
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- "data binding [WPF], CompositeCollection class"
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ms.assetid: 0d8fc84c-7920-427f-8ad7-d55ca656c170
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---
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# How to: Implement a CompositeCollection
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## Example
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The following example shows how to display multiple collections and items as one list using the <xref:System.Windows.Data.CompositeCollection> class. In this example, `GreekGods` is an <xref:System.Collections.ObjectModel.ObservableCollection%601> of `GreekGod` custom objects. Data templates are defined so that `GreekGod` objects and `GreekHero` objects appear with a gold and a cyan foreground color respectively.
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[!code-xaml[CompositeCollections#1](~/samples/snippets/csharp/VS_Snippets_Wpf/CompositeCollections/CS/Window1.xaml#1)]
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## See also
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- <xref:System.Windows.Data.CollectionContainer>
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- <xref:System.Windows.Controls.ItemsControl.ItemsSource%2A>
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- <xref:System.Windows.Data.XmlDataProvider>
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- <xref:System.Windows.DataTemplate>
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- [Data Binding Overview](/dotnet/desktop-wpf/data/data-binding-overview)
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- [How-to Topics](data-binding-how-to-topics.md)
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