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32 lines
1.9 KiB
Markdown
32 lines
1.9 KiB
Markdown
---
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title: "How to: Call a Page Function"
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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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- "calling page functions [WPF]"
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- "page functions [WPF], calling"
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- "functions [WPF], calling"
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ms.assetid: a4808397-c6d5-406a-83e0-0091f0c15ae4
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---
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# How to: Call a Page Function
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This example shows how to call a page function from a [!INCLUDE[TLA#tla_xaml](../../../includes/tlasharptla-xaml-md.md)] page.
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## Example
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You can navigate to a page function using a uniform resource identifier (URI), just as you can when you navigate to a page. This is shown in the following example.
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[!code-csharp[HOWTOPageFunctionSnippets#NavigateToAPageFunctionLikeAPageCODEBEHIND](~/samples/snippets/csharp/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/CSharp/CallingPage.xaml.cs#navigatetoapagefunctionlikeapagecodebehind)]
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[!code-vb[HOWTOPageFunctionSnippets#NavigateToAPageFunctionLikeAPageCODEBEHIND](~/samples/snippets/visualbasic/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/VisualBasic/CallingPage.xaml.vb#navigatetoapagefunctionlikeapagecodebehind)]
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If you need to pass data to the page function, you can create an instance of it and pass the data by setting a property. Or, as the following example shows, you can pass the data using a non-parameterless constructor.
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[!code-xaml[HOWTOPageFunctionSnippets#CallAPageFunctionXAML](~/samples/snippets/csharp/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/CSharp/CallingPage.xaml#callapagefunctionxaml)]
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[!code-csharp[HOWTOPageFunctionSnippets#CallAPageFunctionCODEBEHIND](~/samples/snippets/csharp/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/CSharp/CallingPage.xaml.cs#callapagefunctioncodebehind)]
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[!code-vb[HOWTOPageFunctionSnippets#CallAPageFunctionCODEBEHIND](~/samples/snippets/visualbasic/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/VisualBasic/CallingPage.xaml.vb#callapagefunctioncodebehind)]
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## See also
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- <xref:System.Windows.Navigation.PageFunction%601>
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