我正在尝试在我的树视图中添加图标,但它没有显示出来。HierarchicalDataTemplate 位于 windows 资源中,而 treeview 位于 Grid 中。
任何人都可以告诉我我犯了什么错误吗?
这是 XML:
<Window x:Class="Treeview.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Support" Height="700" Width="1024" SizeToContent="WidthAndHeight"
mc:Ignorable="d" xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
d:DesignHeight="229" Icon="/Test;component/Images/Treeview.jpg">
<Window.Resources>
<XmlDataProvider x:Key="questions" XPath="Questions/Question" />
<HierarchicalDataTemplate x:Key="rootTemplate">
<HierarchicalDataTemplate.ItemsSource>
<Binding XPath="child::*" />
</HierarchicalDataTemplate.ItemsSource>
<StackPanel Orientation="Horizontal">
<CheckBox Name="checkBoxTree" Checked="TreeView_Checked" Unchecked="checkBoxTree_Unchecked" />
<Image Style="{StaticResource ExpandingImageStyle}">
<Image.Resources>
<BitmapImage x:Key="Icon_Closed" UriSource="Images/Plus.ico"/>
<BitmapImage x:Key="Icon_Open" UriSource="Images/Minus.ico"/>
</Image.Resources>
</Image>
<TextBlock Text="{Binding XPath=@Name, Mode=TwoWay}" />
<TextBlock>
<Hyperlink NavigateUri="{Binding XPath=@WebSite}" RequestNavigate="Hyperlink_RequestNavigate">
<TextBlock Text="{Binding XPath=@WebSite}" />
</Hyperlink>
</TextBlock>
</StackPanel>
</HierarchicalDataTemplate>
</Window.Resources>
<Grid>
<TreeView Name="TreeViewer" HorizontalAlignment="Left" Height="220" Margin="10,116,0,0" Grid.Row="1"
VerticalAlignment="Top" Width="700" Visibility="Collapsed" FontSize="15"
ItemsSource="{Binding Source={StaticResource questions}}" ItemTemplate="{StaticResource rootTemplate}" >
<TreeView.Resources>
<Style x:Key="ExpandingImageStyle" TargetType="{x:Type Image}">
<Setter Property="Source" Value="{DynamicResource Icon_Closed}"/>
<Style.Triggers>
<DataTrigger Binding="{Binding RelativeSource={RelativeSource AncestorType=TreeViewItem}, Path=IsExpanded}" Value="True">
<Setter Property="Source" Value="{DynamicResource Icon_Open}"/>
</DataTrigger>
</Style.Triggers>
</Style>
</TreeView.Resources>
</TreeView>
</Grid>
</Window>