如何以编程方式将样式与Xamarin中的按钮关联？

<!-- ButtonStyle.xaml -->
<Style x:Key="ButtonStyle" TargetType="Button">
    <Setter Property="BackgroundColor" Value="Red" />
    <Setter Property="FontSize" Value="20" />
    <!-- 其他样式属性 -->
</Style>

<!-- MainPage.xaml -->
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:local="clr-namespace:YourNamespace"
             x:Class="YourNamespace.MainPage">

    <ContentPage.Resources>
        <ResourceDictionary>
            <ResourceDictionary.MergedDictionaries>
                <local:ButtonStyle /> <!-- 引用样式资源文件 -->
            </ResourceDictionary.MergedDictionaries>
        </ResourceDictionary>
    </ContentPage.Resources>

    <StackLayout>
        <Button Text="Click me" Style="{StaticResource ButtonStyle}" Clicked="Button_Clicked" />
    </StackLayout>

</ContentPage>

// MainPage.xaml.cs
private void Button_Clicked(object sender, EventArgs e)
{
    Button button = (Button)sender;
    button.BackgroundColor = Color.Blue;
    button.FontSize = 24;
    // 其他样式修改
}