Is there an advantage to using a XAML Markup Extension
instead of a Style
tag at the application (or page) level when setting global properties?
Context:
In the "XAML Basics" docs they give the following example:
ORIGINAL
<Button Text="Do this!"
HorizontalOptions="Center"
VerticalOptions="CenterAndExpand"
BorderWidth="3"
Rotation="-15"
TextColor="Red"
FontSize="24" />
... OTHER SIMILAR BUTTONS ...
CLEAN
<ContentPage.Resources>
<ResourceDictionary>
<LayoutOptions x:Key="horzOptions"
Alignment="Center" />
<LayoutOptions x:Key="vertOptions"
Alignment="Center"
Expands="True" />
<x:Double x:Key="borderWidth">
3
</x:Double>
<x:Double x:Key="rotationAngle">-15</x:Double>
</ResourceDictionary>
</ContentPage.Resources>
<Button Text="Do this!"
HorizontalOptions="{StaticResource horzOptions}"
VerticalOptions="{StaticResource vertOptions}"
BorderWidth="{StaticResource borderWidth}"
Rotation="{StaticResource rotationAngle}"
TextColor="{StaticResource textColor}"
FontSize="{StaticResource fontSize}" />
and in the docs for Style they give the following example:
RESOURCE DICTIONARY CONTAINING BUTTON STYLE set in App.cs
<Application.Resources>
<ResourceDictionary>
<Style x:Key="buttonStyle" TargetType="Button">
<Setter Property="HorizontalOptions" Value="Center" />
<Setter Property="VerticalOptions" Value="CenterAndExpand" />
<Setter Property="BorderColor" Value="Lime" />
<Setter Property="BorderRadius" Value="5" />
<Setter Property="BorderWidth" Value="5" />
<Setter Property="WidthRequest" Value="200" />
<Setter Property="TextColor" Value="Teal" />
</Style>
</ResourceDictionary>
</Application.Resources>
BUTTON WITH STYLE APPLIED IN A ContentPage
<Button Text="These buttons" Style="{StaticResource buttonStyle}" />
Clearly they are syntactically similar but the second one is much less verbose, so what's the point of the first approach?
question from:
https://stackoverflow.com/questions/65540791/xamarin-shared-resources-global-styles-and-markup-extensions 与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…