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WPF常見的參考資源的宣告有StaticResource與DynamicResource, 使用方式如下，

XAML如下，

<Window x:Class="WpfApplication1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525" Loaded="Window_Loaded">
    <Window.Resources>
        <SolidColorBrush Color="Red" x:Key="ForegroundBrush" />
        <SolidColorBrush Color="Blue" x:Key="BackgroundBrush" />
        <SolidColorBrush Color="Gray" x:Key="GridBackgroundBrush" />
        <SolidColorBrush Color="Yellow" x:Key="Btn2BackgroundBrush" />
    </Window.Resources>
    <Grid Background="{StaticResource GridBackgroundBrush}">
        <Button Background="{StaticResource BackgroundBrush}"
Foreground="{StaticResource ForegroundBrush}" Height="23" Margin="111,104,92,0" Name="Button1" 
                VerticalAlignment="Top">Button1</Button>
        <Button Background="{DynamicResource Btn2BackgroundBrush}" Height="23">Button2 </Button>
    </Grid>
</Window>

CS如下，

private void Window_Loaded(object sender, RoutedEventArgs e)
{
    //直接換掉Resource，而Grid是使用StaticResource，所以不會更換
    this.Resources["GridBackgroundBrush"] = new SolidColorBrush(Colors.Chocolate);

    //直接換掉Resource，而Button2是使用DynamicResource，所以會更換
    this.Resources["Btn2BackgroundBrush"] = new SolidColorBrush(Colors.Navy); 

    //換掉Resource的Color，會通知Button一併更換
    ((SolidColorBrush)this.Resources["ForegroundBrush"]).Color = Colors.Green;

    SolidColorBrush bBrush;
    bBrush = (SolidColorBrush)this.Resources["BackgroundBrush"];
    //換掉Resource的Color，會通知Button一併更換
    bBrush.Color = Colors.Black;
}

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