WPF中的派生类和主题继承?

如果在名为Dictionary1.xaml的资源字典中有此样式

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
    <Style x:Key="MyButtonStyle"
           TargetType="{x:Type Button}" 
           BasedOn="{StaticResource {x:Type Button}}">
        <Setter Property="Width" Value="75" />
        <Setter Property="Height" Value="23" />
    </Style>
</ResourceDictionary>

然后你可以把它设置在任何按钮上

Uri resourceLocater = new Uri("/YourAssemblyName;component/Dictionary1.xaml", System.UriKind.Relative);
ResourceDictionary resourceDictionary = (ResourceDictionary)Application.LoadComponent(resourceLocater);
Style myButtonStyle = resourceDictionary["MyButtonStyle"] as Style;

Button button = new Button();
button.Style = myButtonStyle;