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27 lines
1.3 KiB
Markdown
27 lines
1.3 KiB
Markdown
---
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title: "How to: Open a Dialog Box"
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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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- "opening dialog boxes [WPF]"
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- "dialog boxes [WPF], opening"
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ms.assetid: 6b1557d2-da98-4ef4-9f68-4089f04ab9ea
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---
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# How to: Open a Dialog Box
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This example shows how to open a dialog box.
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## Example
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A dialog box is a window that is opened by instantiating <xref:System.Windows.Window> and calling the <xref:System.Windows.Window.ShowDialog%2A> method. <xref:System.Windows.Window.ShowDialog%2A> opens a window and doesn't return until the new dialog box has been closed. This type of window is also known as a *modal* window, and restricts user input.
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[!code-csharp[HOWTOWindowManagementSnippets#OpenNewDialogBoxCODE](~/samples/snippets/csharp/VS_Snippets_Wpf/HOWTOWindowManagementSnippets/CSharp/MainWindow.xaml.cs#opennewdialogboxcode)]
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[!code-vb[HOWTOWindowManagementSnippets#OpenNewDialogBoxCODE](~/samples/snippets/visualbasic/VS_Snippets_Wpf/HOWTOWindowManagementSnippets/visualbasic/mainwindow.xaml.vb#opennewdialogboxcode)]
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## .NET Framework Security
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Calling <xref:System.Windows.Window.ShowDialog%2A> requires permission to use all windows and user input events without restriction.
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## See also
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- [Return a Dialog Box Result](how-to-return-a-dialog-box-result.md)
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