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Using DynamicResource in WPF

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DynamicResource: DynamicResources are resolved at runtime. Use DynamicResources when the value of the resource could change during the lifetime of the Application.

I will show you an example regarding DynamicResource.

<Window.Resources>

<SolidColorBrush x:Key=”brush” Color=”BlueViolet”></SolidColorBrush>

<Style TargetType=”Border” x:Key=”background”>

<Setter Property=”Background” Value=”Green”></Setter>

</Style>

</Window.Resources>

In my WPF application page I’ve one textbox and two ellipses. In Window. Resources I defined the SolidColorBrush and the Style properties.

In above code you can observe x: Key attribute. x: Key uniquely identifies elements that are created and referenced in a XAML-defined dictionary.

Here I’m using above resources. Have a look at below code.

You can use this syntax in xaml design page: {DynamicResource x:keyName}

<Grid>

<StackPanel>

<Border Style=”{StaticResource background}”>

<DockPanel Height=”360″ Width=”312″>

<Button x:Name=”button” Content=”Click” Click=”Button_Click” Background=”CadetBlue” Height=”40″ Width=”63″ />

</DockPanel>

</Border>

</StackPanel>

</Grid>

And in code behind page (.xaml.cs), I write this code in button click event.

private void Button_Click(object sender, RoutedEventArgs e)

{

this.button.SetResourceReference(BackgroundProperty, “brush”);

}

Run the page and you can see the color change of the button after you click on it.

Result window looks like this.


Hope you like this article;

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