用Expander替换Treeview +-

Question

我正在尝试从树视图中删除节点符号+-，并将它们替换为Expander。以下是我的Xaml：

​

        <TreeView.Resources>
            <HierarchicalDataTemplate ItemsSource="{Binding Disks}" DataType="{x:Type local1:GenSet}">
                <Expander Header="{Binding Genre}" x:Name="exp" IsExpanded="False" >
                </Expander>
                <HierarchicalDataTemplate.Triggers>
                    <DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType=TreeViewItem}, Path=IsExpanded}" Value="True">
                        <Setter TargetName="exp" Property="IsExpanded"  Value="True"/>
                    </DataTrigger>
                    <DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType=TreeViewItem}, Path=IsExpanded}" Value="False">
                        <Setter TargetName="exp" Property="IsExpanded"  Value="False"/>
                    </DataTrigger>
                </HierarchicalDataTemplate.Triggers>

                <!--<TextBlock Text="{Binding Genre}"/>-->
            </HierarchicalDataTemplate>
            <DataTemplate DataType="{x:Type local1:DiskPrime}">
                <TextBlock Text="{Binding Namee}"/>
            </DataTemplate>
        </TreeView.Resources>
    </TreeView>

我需要删除+-图标并让扩展器工作。你能建议一下如何完成这件事吗？谢谢。

Answer 1

在ItemContainerStyle中，为TreeViewItems设置新的Template。

Answer 2

使用它并对其进行修改以满足您的需求。

     <TreeView>
         <TreeView.Resources> 
           <Style TargetType="TreeViewItem">
                <Setter Property="Template">
                    <Setter.Value>
                        <ControlTemplate>
                            <Expander Header="{Binding RelativeSource={RelativeSource AncestorType=TreeViewItem}, Path=Header}">
                                <ContentPresenter Content="{Binding RelativeSource={RelativeSource AncestorType=TreeViewItem}, Path=Items[0]}"/>
                            </Expander>
                        </ControlTemplate>
                    </Setter.Value>
                </Setter>
            </Style>
        </TreeView.Resources>
        <TreeViewItem Header="Test 1">
            <TreeViewItem Header="Child 1"><TextBox Text="Hello"></TextBox></TreeViewItem>
        </TreeViewItem>
        <TreeViewItem Header="Test 2"/>
        <TreeViewItem Header="Test 3"/>
     </TreeView>