A more compact Style format

Allow us to write Styles like this:

<Style Key="Style1" TargetType="Control">
   <Set
    Foreground = "#66603a"
    Background = "#fff4e4"
    BorderBrush = "Red"
    BorderThickness = ".5,.5,1.5,1.5"          
    FontFamily = "Times New Roman" 
    FontSize= "18" 
    FontWeight = "Bold" 
    FontStyle = "Oblique"
    Padding = "5" 
    Margin = "10" />

    <Handle MouseEnter ="Control_MouseEnter"/>
</Style>

this is more compact and more readable than:

<Style Key="Style1" TargetType="Control">
      <Setter Property="Control.Foreground" Value="#66603a" />
      <Setter Property="Control.Background" Value="#fff4e4"/>
      <Setter Property="Control.BorderBrush" Value="Red"/>
      <Setter Property="Control.BorderThickness" Value=".5,.5,1.5,1.5"/>          
      <Setter Property="Control.FontFamily" Value="Times New Roman" />
      <Setter Property="Control.FontSize" Value="18" />
      <Setter Property="Control.FontWeight" Value="Bold" />
      <Setter Property="Control.FontStyle" Value="Oblique"/>
      <Setter Property="Control.Padding" Value="5" />
      <Setter Property="Control.Margin" Value="10" />

    <EventSetter Event="MouseEnter"  Handler="Control_MouseEnter"/>
</Style>

For complex value, there is a little to enhance:

<Style>
        <Set BorderBrush="new()">
                <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
                    <GradientStop Color="Yellow" Offset="0.0" />
                    <GradientStop Color="Red" Offset="0.25" />
                    <GradientStop Color="Blue" Offset="0.75" />
                    <GradientStop Color="LimeGreen" Offset="1.0" />
                </LinearGradientBrush>
        </Set>
</Style>

instead of

<Style>
        <Setter Property="BorderBrush" >
            <Setter.Value>
                <LinearGradientBrush StartPoint="0.5,0" EndPoint="0.5,1">
                    <GradientStop Color="Yellow" Offset="0.0" />
                    <GradientStop Color="Red" Offset="0.25" />
                    <GradientStop Color="Blue" Offset="0.75" />
                    <GradientStop Color="LimeGreen" Offset="1.0" />
                </LinearGradientBrush>
            </Setter.Value>
        </Setter>
</Style>

Note: There is no need to create a Set type. Parse <Set /> as an xml tag and get its Attr / Value pairs, then create a XAML Setter for each pair, and them to the Style. This can happen in run-time or in the precompiled BAML. This is a straight forward easy solution. The only work to do, is make the editor / Xaml parser check that each attr written in the Set tag is a property in the TargetType with a valid value, of course with intellisense support. This should be easier in the absence of the TargetType , where each attr (property) is fully qualified (i.e Control.Foreground = ...). My aim here is to have a 2-stage Xaml parsing, to allow using some shortcut syntax, that expanded in run-time to the formal Xaml syntax.

microsoft / xaml-standard

A more compact Style format #235