ELK/FrameworkLocal/UIClient/Themes/LightBlue/TreeView.xaml

<ResourceDictionary
	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"
	mc:Ignorable="d">

    <SolidColorBrush x:Key="TreeView_BG_MouseOver" Color="#FFD6DCE5"/>
    <SolidColorBrush x:Key="TreeView_BG_Select" Color="#FF47A2E7"/>

    <Style x:Key="TreeViewItemFocusVisual"/>

    <PathGeometry x:Key="TreeArrow" Figures="M0,0 L0,6 L6,0 z"/>

    <Style x:Key="ExpandCollapseToggleStyle" TargetType="{x:Type ToggleButton}">
        <Setter Property="Focusable" Value="False"/>
        <Setter Property="Width" Value="16"/>
        <Setter Property="Height" Value="16"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ToggleButton}">
                    <Border Background="#00FFFFFF" Width="16" Height="16" Padding="3,0" Cursor="Hand">
                        <Grid>
                            <Grid Background="Black" Margin="-5" Opacity="0"/>
                            <Path x:Name="ExpandPath" Fill="Gray" Data="{StaticResource TreeArrow}" HorizontalAlignment="Left" VerticalAlignment="Center">
                                <Path.RenderTransform>
                                    <RotateTransform Angle="135" CenterX="3" CenterY="3"/>
                                </Path.RenderTransform>
                            </Path>
                        </Grid>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter Property="Fill" TargetName="ExpandPath" Value="#FFFFBB00"/>
                        </Trigger>
                        <Trigger Property="IsChecked" Value="True">
                            <Setter Property="RenderTransform" TargetName="ExpandPath">
                                <Setter.Value>
                                    <RotateTransform Angle="180" CenterX="3" CenterY="3"/>
                                </Setter.Value>
                            </Setter>
                            <Setter Property="Fill" TargetName="ExpandPath" Value="Black"/>
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Fill" TargetName="ExpandPath" Value="#FF9A9A9A"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

    <Style x:Key="{x:Type TreeViewItem}" TargetType="{x:Type TreeViewItem}">
        <Setter Property="HorizontalContentAlignment" Value="{Binding HorizontalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
        <Setter Property="VerticalContentAlignment" Value="{Binding VerticalContentAlignment, RelativeSource={RelativeSource AncestorType={x:Type ItemsControl}}}"/>
        <Setter Property="Padding" Value="1,0,0,0"/>
        <Setter Property="FontFamily" Value="Arial"/>
        <Setter Property="Background" Value="{DynamicResource TreeView_BG_MouseOver}"/>
        <Setter Property="Foreground" Value="{DynamicResource FG_Black}"/>
        <Setter Property="FocusVisualStyle" Value="{StaticResource TreeViewItemFocusVisual}"/>
        <Setter Property="FontSize" Value="16"/>
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type TreeViewItem}">
                    <Grid SnapsToDevicePixels="true">
                        <Grid.ColumnDefinitions>
                            <ColumnDefinition MinWidth="16" Width="Auto"/>
                            <ColumnDefinition Width="Auto"/>
                            <ColumnDefinition Width="*"/>
                        </Grid.ColumnDefinitions>
                        <Grid.RowDefinitions>
                            <RowDefinition Height="Auto" MinHeight="24"/>
                            <RowDefinition/>
                        </Grid.RowDefinitions>
                        <Border x:Name="Text_BG" Grid.ColumnSpan="3" Background="{TemplateBinding Background}" Margin="-2,2,1,1" Opacity="0"/>
                        <ToggleButton x:Name="Expander" Style="{StaticResource ExpandCollapseToggleStyle}" ClickMode="Press" IsChecked="{Binding IsExpanded, RelativeSource={RelativeSource TemplatedParent}}"/>
                        <Grid x:Name="TreeViewHeader" Grid.Column="1" HorizontalAlignment="Left" Cursor="Hand">
                            <ContentPresenter x:Name="PART_Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}" SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" ContentSource="Header" VerticalAlignment="Center" Margin="2,0,5,0"/>
                        </Grid>
                        <ItemsPresenter x:Name="ItemsHost" Grid.Column="1" Grid.ColumnSpan="2" Grid.Row="1" Grid.RowSpan="1"/>
                    </Grid>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsMouseOver" SourceName="TreeViewHeader" Value="True">
                            <Setter Property="Opacity" TargetName="Text_BG" Value="1"/>
                            <Setter Property="Foreground" Value="{DynamicResource FG_Blue}"/>
                        </Trigger>
                        <Trigger Property="IsSelected" Value="True">
                            <Setter Property="BorderThickness" TargetName="Text_BG" Value="0"/>
                            <Setter Property="Opacity" TargetName="Text_BG" Value="1"/>
                            <Setter Property="Foreground" Value="{DynamicResource FG_White}"/>
                            <Setter Property="Background" TargetName="Text_BG" Value="{DynamicResource TreeView_BG_Select}"/>
                        </Trigger>
                        <Trigger Property="IsExpanded" Value="false">
                            <Setter Property="Visibility" TargetName="ItemsHost" Value="Collapsed"/>
                        </Trigger>
                        <Trigger Property="HasItems" Value="false">
                            <Setter Property="Visibility" TargetName="Expander" Value="Hidden"/>
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="false">
                            <Setter Property="Foreground" Value="#FF9A9A9A"/>
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <Trigger Property="VirtualizingStackPanel.IsVirtualizing" Value="true">
                <Setter Property="ItemsPanel">
                    <Setter.Value>
                        <ItemsPanelTemplate>
                            <VirtualizingStackPanel/>
                        </ItemsPanelTemplate>
                    </Setter.Value>
                </Setter>
            </Trigger>
        </Style.Triggers>
    </Style>

    <Style x:Key="TreeView-SecondFloor" TargetType="{x:Type TreeViewItem}" BasedOn="{StaticResource {x:Type TreeViewItem}}">
        <Setter Property="FontSize" Value="14"/>
    </Style>

    <Style x:Key="{x:Type TreeView}" TargetType="{x:Type TreeView}">
        <Setter Property="Background" Value="Transparent"/>
        <Setter Property="OverridesDefaultStyle" Value="True"/>
        <Setter Property="SnapsToDevicePixels" Value="True"/>
        <Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
        <Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
        <Setter Property="Template">
            <Setter.Value >
                <ControlTemplate TargetType="{x:Type TreeView}" >
                    <Border x:Name = "Border" CornerRadius="1" BorderThickness="1">
                        <ScrollViewer Focusable="False" CanContentScroll="False" Padding="4">
                            <ItemsPresenter/>
                        </ScrollViewer>
                    </Border>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>

   

</ResourceDictionary>