MTP2.0_CSharp/Muchinfo.MTPClient/Fx4.0/Main/03.UI/Muchinfo.TASClient/Themes/ControlStyle/TreeViewStyle.xaml

<ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                    xmlns:converters="clr-namespace:Muchinfo.MTPClient.Converters">

    <converters:TreeViewLineConverter x:Key="TreeViewLineConverter" />
    <converters:NewTreeViewLineConverter x:Key="NewTreeViewLineConverter" />

    <!--  折叠按钮  -->
    <Style x:Key="ExpandToggleButtonStyle" TargetType="{x:Type ToggleButton}">
        <Setter Property="Focusable" Value="False" />
        <Setter Property="Margin" Value="0,5.5,0,0" />
        <Setter Property="Width" Value="19" />
        <Setter Property="Height" Value="13" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type ToggleButton}">
                    <Border Width="19"
                            Height="13"
                            Background="Transparent">
                        <Border Width="9"
                                Height="9"
                                Background="{DynamicResource TreeBackground}"
                                BorderBrush="{DynamicResource TreeForeground}"
                                BorderThickness="1"
                                SnapsToDevicePixels="true">
                            <Path x:Name="ExpandPath"
                                  Margin="1,1,1,1"
                                  Data="M 0 2 L 0 3 L 2 3 L 2 5 L 3 5 L 3 3 L 5 3 L 5 2 L 3 2 L 3 0 L 2 0 L 2 2 Z"
                                  Fill="{DynamicResource TreeForeground}" />
                        </Border>
                    </Border>
                    <ControlTemplate.Triggers>
                        <Trigger Property="IsChecked" Value="True">
                            <Setter TargetName="ExpandPath" Property="Data" Value="M 0 2 L 0 3 L 5 3 L 5 2 Z" />
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="True">
                            <Setter TargetName="ExpandPath" Property="Fill" Value="White" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
    </Style>
    <!--  显示虚线样式TreeViewItem  -->
    <Style x:Key="LineTreeViewItem" TargetType="{x:Type TreeViewItem}">
        <Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}" />
        <Setter Property="IsEnabled" Value="{Binding IsEnabled}" />
        <Setter Property="Background" Value="{DynamicResource TreeBackground}" />
        <Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}" />
        <Setter Property="Foreground" Value="{DynamicResource TreeForeground}" />
        <Setter Property="BorderBrush" Value="{DynamicResource CommonBorderBrush}" />
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="{x:Type TreeViewItem}">
                    <!--  <ColumnDefinition Width="*" />  -->
                    <Grid>
                        <!--
                            <Grid.ColumnDefinitions>
                            <ColumnDefinition Width="Auto" MinWidth="19" />
                            <ColumnDefinition Width="auto" />
                            </Grid.ColumnDefinitions>
                            <Grid.RowDefinitions>
                            <RowDefinition Height="Auto" />
                            <RowDefinition />
                            </Grid.RowDefinitions>
                        -->

                        <StackPanel Orientation="Vertical">
                            <StackPanel Orientation="Horizontal">
                                <ToggleButton x:Name="Expander"
                                              VerticalAlignment="Center"
                                              BorderBrush="{TemplateBinding BorderBrush}"
                                              ClickMode="Press"
                                              IsChecked="{Binding IsExpanded,
                                                                  RelativeSource={RelativeSource TemplatedParent}}"
                                              Style="{StaticResource ExpandToggleButtonStyle}" />
                                <Rectangle x:Name="VerLn"
                                           Grid.RowSpan="2"
                                           Width="1"
                                           Margin="10,0,0,0"
                                           SnapsToDevicePixels="true"
                                           Stretch="Fill"
                                           Stroke="{DynamicResource TreeForeground}"
                                           StrokeDashArray="1,3"
                                           StrokeThickness="1" />
                                <Rectangle x:Name="HorLn"
                                           Width="20"
                                           Height="1"
                                           SnapsToDevicePixels="true"
                                           Stroke="{DynamicResource TreeForeground}"
                                           StrokeDashArray="1,3"
                                           StrokeThickness="1" />
                                <Border x:Name="Bd"
                                        Grid.Column="1"
                                        Background="{TemplateBinding Background}"
                                        BorderBrush="{TemplateBinding BorderBrush}"
                                        BorderThickness="{TemplateBinding BorderThickness}"
                                        Padding="{TemplateBinding Padding}">
                                    <ContentPresenter x:Name="PART_Header"
                                                      Margin="3"
                                                      HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                                                      ContentSource="Header" />
                                </Border>
                            </StackPanel>
                            <ItemsPresenter x:Name="ItemsHost"
                                            Grid.Row="1"
                                            Grid.Column="1"
                                            Grid.ColumnSpan="2" />
                        </StackPanel>
                    </Grid>
                    <ControlTemplate.Triggers>
                        <!--  无父无子的项不显示线  -->
                        <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Converter={StaticResource NewTreeViewLineConverter}}" Value="true">
                            <Setter TargetName="HorLn" Property="Visibility" Value="Collapsed" />
                            <Setter TargetName="VerLn" Property="Visibility" Value="Collapsed" />
                            <Setter TargetName="Expander" Property="Visibility" Value="Collapsed" />
                            <Setter TargetName="Bd" Property="Margin" Value="20,0" />
                        </DataTrigger>
                        <!--  最后一项竖线的显示问题  -->
                        <DataTrigger Binding="{Binding RelativeSource={RelativeSource Self}, Converter={StaticResource TreeViewLineConverter}}" Value="true">
                            <Setter TargetName="VerLn" Property="Height" Value="9" />
                            <Setter TargetName="VerLn" Property="VerticalAlignment" Value="Top" />
                        </DataTrigger>


                        <Trigger Property="IsExpanded" Value="false">
                            <Setter TargetName="ItemsHost" Property="Visibility" Value="Collapsed" />
                        </Trigger>
                        <Trigger Property="HasItems" Value="false">
                            <Setter TargetName="Expander" Property="Visibility" Value="Collapsed" />
                        </Trigger>
                        <Trigger Property="HasItems" Value="true">
                            <Setter TargetName="VerLn" Property="Visibility" Value="Collapsed" />
                            <Setter TargetName="HorLn" Property="Visibility" Value="Collapsed" />
                        </Trigger>
                        <Trigger Property="IsSelected" Value="true">
                            <Setter Property="Foreground" Value="{DynamicResource TreeItemSelectedForeground}" />
                        </Trigger>
                        <Trigger Property="IsMouseOver" Value="true">
                            <Setter Property="Foreground" Value="{DynamicResource TreeMouseOverForeground}" />
                            <Setter TargetName="Bd" Property="Background" Value="{DynamicResource ExpanderHeadBrush}" />
                        </Trigger>
                        <Trigger Property="IsEnabled" Value="False">
                            <Setter Property="Foreground" Value="{DynamicResource DisEnableBrush}" />
                        </Trigger>
                    </ControlTemplate.Triggers>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Setter Property="ItemsPanel">
            <Setter.Value>
                <ItemsPanelTemplate>
                    <StackPanel />
                </ItemsPanelTemplate>
            </Setter.Value>
        </Setter>
    </Style>




</ResourceDictionary>