Andy De George
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title, ms.date, dev_langs, helpviewer_keywords, ms.assetid
| title | ms.date | dev_langs | helpviewer_keywords | ms.assetid | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| How to: Persist and Restore Application-Scope Properties Across Application Sessions | 03/30/2017 |
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55d5904a-f444-4eb5-abd3-6bc74dd14226 |
How to: Persist and Restore Application-Scope Properties Across Application Sessions
This example shows how to persist application-scope properties when an application shuts down, and how to restore application-scope properties when an application is next launch.
Example
The application persists application-scope properties to, and restores them from, isolated storage. Isolated storage is a protected storage area that can safely be used by applications without file access permission. The App.xaml file defines the App_Startup method as the handler for the xref:System.Windows.Application.Startup?displayProperty=nameWithType event, and the App_Exit method as the handler for the xref:System.Windows.Application.Exit?displayProperty=nameWithType event, as shown in the highlighted lines of the first example. The second example shows a portion of the App.xaml.cs and App.xaml.vb files that highlights the code for the App_Startup method, which restores application-scope properties, and the App_Exit method, which saves application-scope properties.
[!code-xamlHOWTOApplicationModelSnippets#PersistRestoreAppScopePropertiesXAML1]
[!code-csharpHOWTOApplicationModelSnippets#PersistRestoreAppScopePropertiesCODEBEHIND1] [!code-vbHOWTOApplicationModelSnippets#PersistRestoreAppScopePropertiesCODEBEHIND1]