--- title: "How to: Call a Page Function" ms.date: "03/30/2017" dev_langs: - "csharp" - "vb" helpviewer_keywords: - "calling page functions [WPF]" - "page functions [WPF], calling" - "functions [WPF], calling" ms.assetid: a4808397-c6d5-406a-83e0-0091f0c15ae4 --- # How to: Call a Page Function This example shows how to call a page function from a Extensible Application Markup Language (XAML) page. ## Example 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. [!code-csharp[HOWTOPageFunctionSnippets#NavigateToAPageFunctionLikeAPageCODEBEHIND](~/samples/snippets/csharp/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/CSharp/CallingPage.xaml.cs#navigatetoapagefunctionlikeapagecodebehind)] [!code-vb[HOWTOPageFunctionSnippets#NavigateToAPageFunctionLikeAPageCODEBEHIND](~/samples/snippets/visualbasic/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/VisualBasic/CallingPage.xaml.vb#navigatetoapagefunctionlikeapagecodebehind)] 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. [!code-xaml[HOWTOPageFunctionSnippets#CallAPageFunctionXAML](~/samples/snippets/csharp/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/CSharp/CallingPage.xaml#callapagefunctionxaml)] [!code-csharp[HOWTOPageFunctionSnippets#CallAPageFunctionCODEBEHIND](~/samples/snippets/csharp/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/CSharp/CallingPage.xaml.cs#callapagefunctioncodebehind)] [!code-vb[HOWTOPageFunctionSnippets#CallAPageFunctionCODEBEHIND](~/samples/snippets/visualbasic/VS_Snippets_Wpf/HOWTOPageFunctionSnippets/VisualBasic/CallingPage.xaml.vb#callapagefunctioncodebehind)] ## See also -