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Como: Get and Set Application-Scope Resources

  • Artigo

This example shows how to both get and set application-scope resources using Resources.

Exemplo

Applicationexpõe uma loja de escopo do aplicativo para recursos compartilhados: Resources. Recursos armazenados em Resources estão disponíveis a partir de qualquer código que executa dentro do escopo de um aplicativo Application objeto (isto é, código que pode acessar Current). Furthermore, Resources is used in the resource lookup path.

Resources is a dictionary of key/value pairs that you can set from both markup and code, like so:

      ' Set an application-scope resource
      Application.Current.Resources("ApplicationScopeResource") = Brushes.White

// Set an application-scope resource
Application.Current.Resources["ApplicationScopeResource"] = Brushes.White;

    <Application.Resources>
        <SolidColorBrush x:Key="ApplicationScopeResource" Color="White"></SolidColorBrush>
    </Application.Resources>

You use code to get a resource:

      ' Get an application-scope resource
      Dim whiteBrush As Brush = CType(Application.Current.Resources("ApplicationScopeResource"), Brush)

// Get an application-scope resource
Brush whiteBrush = (Brush)Application.Current.Resources["ApplicationScopeResource"];

There are two considerations to make when using Resources. First, the dictionary key is an object, so you need to use exactly the same object instance when both setting and getting a property value (note that the key is case-sensitive when using a string). Second, the dictionary value is an object, so you will need to convert the value to the desired type when getting a property value.

Consulte também

Referência

ResourceDictionary