Создал UserControl, в него кинул Expander. Поместил UserControl в окно. Когда меняю размер окна то размер UserControl меняется, а Expander нет, хотя если все внутренности UserControl поместить в окно напрямую, то все нормально изменяется(см. скриншот).
Код UserControl:
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<UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" xmlns:Microsoft_Windows_Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Classic"
x:Class="WpfApplication2.UserControl1"
x:Name="UserControl"
mc:Ignorable="d" Width="Auto" Height="Auto">
<Grid x:Name="LayoutRoot" HorizontalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Expander Name="expander1" Header="Expander" Grid.Column="0" Grid.ColumnSpan="1" Style="{DynamicResource ExpanderStyle1}" VerticalAlignment="Center" d:LayoutOverrides="Width">
<Grid Background="#FFE5E5E5"/>
</Expander>
</Grid>
</UserControl>
Код окна:
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<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:Microsoft_Windows_Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Classic" xmlns:local="clr-namespace:WpfApplication2" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="d"
x:Class="WpfApplication2.MainWindow"
x:Name="Window"
Title="MainWindow"
Width="640" Height="480">
<Grid x:Name="LayoutRoot">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<local:UserControl1 Margin="122.182,74,429.715,0" VerticalAlignment="Top" d:LayoutOverrides="Width">
<local:UserControl1.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black" Offset="0"/>
<GradientStop Color="#FFEB0909" Offset="1"/>
</LinearGradientBrush>
</local:UserControl1.Background>
</local:UserControl1>
<Grid Height="23" Margin="114,35,429.715,0" VerticalAlignment="Top">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Expander Grid.Column="0" Header="Expander" Margin="0,0,0,0" VerticalAlignment="Top" Background="#00A32525" Style="{DynamicResource ExpanderStyle1}" d:LayoutOverrides="VerticalAlignment">
<Grid Background="#FFE5E5E5"/>
</Expander>
</Grid>
</Grid>
</Window>
из кода вырезаны ресурсы(много текста + их сгенерил Exprsion Blend, я ничего в коде не менял)
ресурсы окна:
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<Window.Resources>
<Style x:Key="ExpanderRightHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="Transparent" SnapsToDevicePixels="False">
<Grid.RowDefinitions>
<RowDefinition Height="19"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Height="19" SnapsToDevicePixels="true" Width="19">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center">
<Path.LayoutTransform>
<RotateTransform Angle="-90"/>
</Path.LayoutTransform>
</Path>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter HorizontalAlignment="Center" Margin="0,4,0,0" Grid.Row="1" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Top"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderUpHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="Transparent" SnapsToDevicePixels="False">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Height="19" SnapsToDevicePixels="true" Width="19">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center">
<Path.LayoutTransform>
<RotateTransform Angle="180"/>
</Path.LayoutTransform>
</Path>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter Grid.Column="1" HorizontalAlignment="Left" Margin="4,0,0,0" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderLeftHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="Transparent" SnapsToDevicePixels="False">
<Grid.RowDefinitions>
<RowDefinition Height="19"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Height="19" SnapsToDevicePixels="true" Width="19">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center">
<Path.LayoutTransform>
<RotateTransform Angle="90"/>
</Path.LayoutTransform>
</Path>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter HorizontalAlignment="Center" Margin="0,4,0,0" Grid.Row="1" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Top"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderHeaderFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Border>
<Rectangle Margin="0" SnapsToDevicePixels="true" Stroke="Black" StrokeThickness="1" StrokeDashArray="1 2"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderDownHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="#FFF70000" SnapsToDevicePixels="False">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Height="19" SnapsToDevicePixels="true" Width="19">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center"/>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter Grid.Column="1" HorizontalAlignment="Center" Margin="0" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderStyle1" TargetType="{x:Type Expander}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Expander}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="3" SnapsToDevicePixels="true">
<DockPanel>
<ToggleButton x:Name="HeaderSite" ContentTemplate="{TemplateBinding HeaderTemplate}" ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}" Content="{TemplateBinding Header}" DockPanel.Dock="Top" Foreground="{TemplateBinding Foreground}" FontWeight="{TemplateBinding FontWeight}" FocusVisualStyle="{StaticResource ExpanderHeaderFocusVisual}" FontStyle="{TemplateBinding FontStyle}" FontStretch="{TemplateBinding FontStretch}" FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" MinWidth="0" MinHeight="0" Padding="{TemplateBinding Padding}" Style="{StaticResource ExpanderDownHeaderStyle}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}"/>
<ContentPresenter x:Name="ExpandSite" DockPanel.Dock="Bottom" Focusable="false" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="Collapsed" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</DockPanel>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="true">
<Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/>
</Trigger>
<Trigger Property="ExpandDirection" Value="Right">
<Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Right"/>
<Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Left"/>
<Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderRightHeaderStyle}"/>
</Trigger>
<Trigger Property="ExpandDirection" Value="Up">
<Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Top"/>
<Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Bottom"/>
<Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderUpHeaderStyle}"/>
</Trigger>
<Trigger Property="ExpandDirection" Value="Left">
<Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Left"/>
<Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Right"/>
<Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderLeftHeaderStyle}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
Ресурсы UserConrtrol:
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<UserControl.Resources>
<Style x:Key="ExpanderRightHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="Transparent" SnapsToDevicePixels="False">
<Grid.RowDefinitions>
<RowDefinition Height="19"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Height="19" SnapsToDevicePixels="true" Width="19">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center">
<Path.LayoutTransform>
<RotateTransform Angle="-90"/>
</Path.LayoutTransform>
</Path>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter HorizontalAlignment="Center" Margin="0,4,0,0" Grid.Row="1" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Top"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderUpHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="Transparent" SnapsToDevicePixels="False">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Height="19" SnapsToDevicePixels="true" Width="19">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center">
<Path.LayoutTransform>
<RotateTransform Angle="180"/>
</Path.LayoutTransform>
</Path>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter Grid.Column="1" HorizontalAlignment="Left" Margin="4,0,0,0" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderLeftHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="Transparent" SnapsToDevicePixels="False">
<Grid.RowDefinitions>
<RowDefinition Height="19"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Height="19" SnapsToDevicePixels="true" Width="19">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center">
<Path.LayoutTransform>
<RotateTransform Angle="90"/>
</Path.LayoutTransform>
</Path>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter HorizontalAlignment="Center" Margin="0,4,0,0" Grid.Row="1" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Top"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderHeaderFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Border>
<Rectangle Margin="0" SnapsToDevicePixels="true" Stroke="Black" StrokeThickness="1" StrokeDashArray="1 2"/>
</Border>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderDownHeaderStyle" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid Background="Transparent" SnapsToDevicePixels="False">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Background="{DynamicResource {x:Static SystemColors.ControlBrushKey}}" Height="19" SnapsToDevicePixels="true" Width="19">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center"/>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter Grid.Column="1" HorizontalAlignment="Left" Margin="4,0,0,0" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ExpanderStyle1" TargetType="{x:Type Expander}">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.WindowTextBrushKey}}"/>
<Setter Property="Background" Value="Transparent"/>
<Setter Property="HorizontalContentAlignment" Value="Stretch"/>
<Setter Property="VerticalContentAlignment" Value="Stretch"/>
<Setter Property="BorderBrush" Value="Transparent"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type Expander}">
<Border BorderBrush="{TemplateBinding BorderBrush}" BorderThickness="{TemplateBinding BorderThickness}" Background="{TemplateBinding Background}" CornerRadius="3" SnapsToDevicePixels="true">
<DockPanel>
<ToggleButton x:Name="HeaderSite" ContentTemplate="{TemplateBinding HeaderTemplate}" ContentTemplateSelector="{TemplateBinding HeaderTemplateSelector}" Content="{TemplateBinding Header}" DockPanel.Dock="Top" Foreground="{TemplateBinding Foreground}" FontWeight="{TemplateBinding FontWeight}" FocusVisualStyle="{StaticResource ExpanderHeaderFocusVisual}" FontStyle="{TemplateBinding FontStyle}" FontStretch="{TemplateBinding FontStretch}" FontSize="{TemplateBinding FontSize}" FontFamily="{TemplateBinding FontFamily}" HorizontalContentAlignment="{TemplateBinding HorizontalContentAlignment}" IsChecked="{Binding IsExpanded, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}}" Margin="1" MinWidth="0" MinHeight="0" Padding="{TemplateBinding Padding}" Style="{DynamicResource ToggleButtonStyle1}" VerticalContentAlignment="{TemplateBinding VerticalContentAlignment}" Width="70.103"/>
<ContentPresenter x:Name="ExpandSite" DockPanel.Dock="Bottom" Focusable="false" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" Margin="{TemplateBinding Padding}" Visibility="Collapsed" VerticalAlignment="{TemplateBinding VerticalContentAlignment}"/>
</DockPanel>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="true">
<Setter Property="Visibility" TargetName="ExpandSite" Value="Visible"/>
</Trigger>
<Trigger Property="ExpandDirection" Value="Right">
<Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Right"/>
<Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Left"/>
<Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderRightHeaderStyle}"/>
</Trigger>
<Trigger Property="ExpandDirection" Value="Up">
<Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Top"/>
<Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Bottom"/>
<Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderUpHeaderStyle}"/>
</Trigger>
<Trigger Property="ExpandDirection" Value="Left">
<Setter Property="DockPanel.Dock" TargetName="ExpandSite" Value="Left"/>
<Setter Property="DockPanel.Dock" TargetName="HeaderSite" Value="Right"/>
<Setter Property="Style" TargetName="HeaderSite" Value="{StaticResource ExpanderLeftHeaderStyle}"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Foreground" Value="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="ToggleButtonStyle1" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Border Padding="{TemplateBinding Padding}">
<Grid SnapsToDevicePixels="False">
<Grid.OpacityMask>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="Black"/>
<GradientStop Color="#E5F7F7F7" Offset="1"/>
</LinearGradientBrush>
</Grid.OpacityMask>
<Grid.Background>
<LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
<GradientStop Color="#FF0F720B" Offset="0"/>
<GradientStop Color="#FF65FF00" Offset="1"/>
</LinearGradientBrush>
</Grid.Background>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="19"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Microsoft_Windows_Themes:ClassicBorderDecorator x:Name="Bd" BorderBrush="{x:Static Microsoft_Windows_Themes:ClassicBorderDecorator.ClassicBorderBrush}" BorderThickness="1" BorderStyle="None" Height="19" SnapsToDevicePixels="true" Width="19" Background="#00000000">
<Path x:Name="arrow" Data="M 1,1.5 L 4.5,5 L 8,1.5" HorizontalAlignment="Center" SnapsToDevicePixels="false" Stroke="{TemplateBinding Foreground}" StrokeThickness="1.5" VerticalAlignment="Center"/>
</Microsoft_Windows_Themes:ClassicBorderDecorator>
<ContentPresenter Grid.Column="1" HorizontalAlignment="Left" Margin="4,0,0,0" RecognizesAccessKey="True" SnapsToDevicePixels="True" VerticalAlignment="Center"/>
</Grid>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Data" TargetName="arrow" Value="M 1,4.5 L 4.5,1 L 8,4.5"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinRaised"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="BorderStyle" TargetName="Bd" Value="ThinPressed"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</UserControl.Resources>
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