Revit.Plugln/FWindSoft/FWindSoft.Wpf/Themes/LabelEditor.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:controls="clr-namespace:FWindSoft.Wpf.Controls"
                    xmlns:converter="clr-namespace:FWindSoft.Wpf.Converter">

    <ControlTemplate x:Key="HorTemplate" TargetType="{x:Type controls:LabelEditor}">
        <Grid>
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="{Binding LabelWidth,RelativeSource={RelativeSource TemplatedParent},Converter={x:Static converter:DoubleGridLengthConverter.Instance}}"></ColumnDefinition>
                <ColumnDefinition></ColumnDefinition>
            </Grid.ColumnDefinitions>
            <ContentPresenter Grid.Column="0" x:Name="HeaderContentPresenter" HorizontalAlignment="{Binding LabelHorizontalAlignment,RelativeSource={RelativeSource TemplatedParent}}" VerticalAlignment="Center"
                                          
                              Margin="0,0,5,0"
                              Content="{TemplateBinding Header}"
                              ContentTemplate="{TemplateBinding HeaderTemplate}"
            />
            <ContentPresenter Grid.Column="1" Content="{TemplateBinding Content}"
                              ContentTemplate="{TemplateBinding ContentTemplate}"
                              Margin="{TemplateBinding Padding}"                                              HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                              VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
        </Grid>
    </ControlTemplate>

    <ControlTemplate x:Key="VerTemplate" TargetType="{x:Type controls:LabelEditor}">
        <Grid>
            <Grid.RowDefinitions>
                <RowDefinition Height="{Binding LabelHeight,RelativeSource={RelativeSource TemplatedParent},Converter={x:Static converter:DoubleGridLengthConverter.Instance}}"></RowDefinition>
                <RowDefinition></RowDefinition>
            </Grid.RowDefinitions>
            <ContentPresenter Grid.Column="0" Grid.Row="0" x:Name="HeaderContentPresenter"
                              HorizontalAlignment="Stretch" VerticalAlignment="Stretch" 
                              Margin="0,0,0,5"
                              Content="{TemplateBinding Header}"
                              ContentTemplate="{TemplateBinding HeaderTemplate}"
            />
            <ContentPresenter Grid.Column="0" Grid.Row="1" Content="{TemplateBinding Content}"
                              ContentTemplate="{TemplateBinding ContentTemplate}"
                              Margin="{TemplateBinding Padding}"                                                                              HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                              VerticalAlignment="{TemplateBinding VerticalContentAlignment}" />
        </Grid>
    </ControlTemplate>

    <Style  TargetType="{x:Type controls:LabelEditor}">
        <Setter Property="Template" Value="{StaticResource ResourceKey=HorTemplate}">

        </Setter>
        <Style.Triggers>
            <Trigger Property="Orientation" Value="Vertical">
                <Setter Property="Template" Value="{StaticResource ResourceKey=VerTemplate}"/>
              
            </Trigger>
        </Style.Triggers>
    </Style>
</ResourceDictionary>