WPF TreeView样式问题，使用了这个样式后，无法选中，求高手

[luliang_2615]

<Window.Resources>
<Style x:Key="styleTreeViewExpandCollapse" TargetType="{x:Type ToggleButton}">
<Setter Property="OverridesDefaultStyle" Value="True"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Image x:Name="image" Source="/App1;component/ico/connected.ico" />
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="true">
<Setter TargetName="image" Property="Source" Value="/App1;component/ico/notconnect.ico" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>

<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type TreeViewItem}">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition MinWidth="19" Width="Auto"/>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<ToggleButton x:Name="Expander" Grid.Column="0" Style="{StaticResource styleTreeViewExpandCollapse}" IsChecked="{Binding Path=IsExpanded,RelativeSource={RelativeSource TemplatedParent}}" ClickMode="Press" Width="16" Height="16"/>
<ContentPresenter x:Name="PART_Header" Grid.Column="1" ContentSource="Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"/>
<ItemsPresenter x:Name="ItemsHost" Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="2"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="IsExpanded" Value="false">
<Setter TargetName="ItemsHost" Property="Visibility" Value="Collapsed"/>
</Trigger>
<Trigger Property="HasItems" Value="false">
<Setter TargetName="Expander" Property="Visibility" Value="Hidden"/>
</Trigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="HasHeader" Value="false"/>
<Condition Property="Width" Value="Auto"/>
</MultiTrigger.Conditions>
<Setter TargetName="PART_Header" Property="MinWidth" Value="75"/>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="HasHeader" Value="false"/>
<Condition Property="Height" Value="Auto"/>
</MultiTrigger.Conditions>
<Setter TargetName="PART_Header" Property="MinHeight" Value="19"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>

[luliang_2615]

<Grid>
<TreeView>
<TreeViewItem Header="12345">
<TreeViewItem Header="512">
<TreeViewItem Header="1232"/>
</TreeViewItem>
</TreeViewItem>
<TreeViewItem Header="12345">
<TreeViewItem Header="512"/>
</TreeViewItem>
<TreeViewItem Header="12345"/>
</TreeView>
</Grid>

[luliang_2615]

没人懂么？

[w5dy]

是因为你没有写IsSelected的Trigger

[飘落的云]

<Style x:Key="styleTreeViewExpandCollapse" TargetType="{x:Type ToggleButton}"> <Setter Property="OverridesDefaultStyle" Value="True"/> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type ToggleButton}"> <Image x:Name="image" Source="Images\dashplus.gif" /> <ControlTemplate.Triggers> <Trigger Property="IsChecked" Value="true"> <Setter TargetName="image" Property="Source" Value="Images\dashminus.gif" /> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> <Style TargetType="{x:Type TreeViewItem}"> <Setter Property="Template"> <Setter.Value> <ControlTemplate TargetType="{x:Type TreeViewItem}"> <Grid> <Grid.ColumnDefinitions> <ColumnDefinition Width="auto"/> <ColumnDefinition/> </Grid.ColumnDefinitions> <Grid.RowDefinitions> <RowDefinition/> <RowDefinition/> </Grid.RowDefinitions> <ToggleButton x:Name="Expander" ClickMode="Press" IsChecked="{Binding IsExpanded, RelativeSource={RelativeSource TemplatedParent}}" Style="{StaticResource styleTreeViewExpandCollapse}"/> <ContentPresenter Grid.Column="1" x:Name="PART_Header" ContentSource="Header" HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"> <ContentPresenter.ContentTemplate> <DataTemplate> <StackPanel x:Name="GroupPanel" Orientation="Horizontal" Margin="0,2,0,2" Height="22"> <TextBlock x:Name="CategoryName" Margin="2,0,0,0" Text="{Binding Path=Content, RelativeSource={RelativeSource TemplatedParent}}" VerticalAlignment="Center"/> </StackPanel> <DataTemplate.Triggers> <DataTrigger Binding="{Binding Path=IsSelected, RelativeSource={RelativeSource TemplatedParent}}" Value="True"> <Setter Property="Foreground" TargetName="CategoryName" Value="White" /> <Setter Property="Background" TargetName="GroupPanel" Value="Blue" /> </DataTrigger> </DataTemplate.Triggers> </DataTemplate> </ContentPresenter.ContentTemplate> </ContentPresenter> <ItemsPresenter x:Name="ItemsHost" Grid.ColumnSpan="2" Grid.Column="1" Grid.Row="1"/> </Grid> <ControlTemplate.Triggers> <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="{DynamicResource {x:Static SystemColors.GrayTextBrushKey}}"/> </Trigger> </ControlTemplate.Triggers> </ControlTemplate> </Setter.Value> </Setter> </Style> 希望能解决你的问题 我试了 没问题(还可以设置每行显示的内容，比如添加一个图片)