Question

我尝试将XDocument绑定到TreeView控件。一切都很好，除了属性。＃％*！$＃@ ^％不想显示：D

请帮助我修改该代码以使其正常工作：

<SolidColorBrush x:Key="xmlValueBrush" Color="Blue" />
<SolidColorBrush x:Key="xmAttributeBrush" Color="Red" />
<SolidColorBrush x:Key="xmlTagBrush" Color="DarkMagenta" />
<SolidColorBrush x:Key="xmlMarkBrush" Color="Blue" />

<DataTemplate x:Key="AttributeTemplate">
    <StackPanel Orientation="Horizontal"
            Margin="3,0,0,0"
            HorizontalAlignment="Center">
        <TextBlock Text="{Binding Path=Name}"
             Foreground="{StaticResource xmAttributeBrush}" FontFamily="Consolas" FontSize="8pt" />
        <TextBlock Text="=&quot;"
             Foreground="{StaticResource xmlMarkBrush}" FontFamily="Consolas" FontSize="8pt" />
        <TextBlock Text="{Binding Path=Value, Mode=TwoWay}"
             Foreground="{StaticResource xmlValueBrush}" FontFamily="Consolas" FontSize="8pt" />
        <TextBlock Text="&quot;"
             Foreground="{StaticResource xmlMarkBrush}" FontFamily="Consolas" FontSize="8pt" />
    </StackPanel>
</DataTemplate>

<HierarchicalDataTemplate x:Key="NodeTemplate">
    <StackPanel Orientation="Horizontal" Focusable="False">
        <TextBlock x:Name="tbName" Text="Root" FontFamily="Consolas" FontSize="8pt" />
        <ItemsControl
            ItemTemplate="{StaticResource AttributeTemplate}" HorizontalAlignment="Center"
            ItemsSource="{Binding Path=Attributes}">
            <ItemsControl.ItemsPanel>
                <ItemsPanelTemplate>
                    <StackPanel Orientation="Horizontal" />
                </ItemsPanelTemplate>
            </ItemsControl.ItemsPanel>
        </ItemsControl>
    </StackPanel>
    <HierarchicalDataTemplate.ItemsSource>
        <Binding Path="Elements" />
    </HierarchicalDataTemplate.ItemsSource>
    <HierarchicalDataTemplate.Triggers>
        <DataTrigger Binding="{Binding Path=NodeType}" Value="Text">
            <Setter TargetName="tbName" Property="Text" Value="{Binding Path=Value, Mode=TwoWay}" />
        </DataTrigger>
        <DataTrigger Binding="{Binding Path=NodeType}" Value="Element">
            <Setter TargetName="tbName" Property="Text" Value="{Binding Path=Name}" />
        </DataTrigger>
    </HierarchicalDataTemplate.Triggers>
</HierarchicalDataTemplate>

我的TreeView：

<TreeView x:Name="XmlTree" Grid.Row="1"
      ItemsSource="{Binding Path=Root.Elements, UpdateSourceTrigger=PropertyChanged}"
      ItemTemplate="{StaticResource NodeTemplate}"
      SelectedItemChanged="XmlTree_SelectedItemChanged" />

这是我的代码背后：

private void BindXmlData(string filePath)
{
    _xml = XDocument.Load(filePath);
    XmlTree.DataContext = _xml;
}

所有节点都显示良好，但我无法管理属性以使其可见

Answer 1

您可以从以下位置更改DataTriggers部分：

            <DataTrigger Binding="{Binding Path=NodeType}" Value="Element">
                <Setter TargetName="tbName" Property="Text" Value="{Binding Path=Name}" />
            </DataTrigger>

要：

            <DataTrigger Binding="{Binding Path=NodeType}" Value="Element">
                <Setter TargetName="tbName" Property="Text" Value="{Binding Path=Name.LocalName}" />
            </DataTrigger>

希望会有所帮助，谢谢！ - Shams

Answer 2

由于答案对我不起作用，我想暗示Ashs答案（Get XML Attributes in WPF with a treeview）。

在这里给出的原始代码中我发现了另一个问题。节点的值不会在树视图中呈现。为此，我需要删除第一个DataTrigger并添加另一个。所以部分

<HierarchicalDataTemplate.Triggers>
...
</HierarchicalDataTemplate.Triggers>

看起来像这样：

<HierarchicalDataTemplate.Triggers>
            <DataTrigger Binding="{Binding Path=NodeType}" Value="Element">
                <Setter TargetName="tbName" Property="Text" Value="{Binding Path=Name}" />
            </DataTrigger>
            <DataTrigger Binding="{Binding Path=FirstNode.NodeType}" Value="Text">
                <Setter TargetName="tbName" Property="Text">
                    <Setter.Value>
                        <MultiBinding StringFormat="{}{0} = {1}">
                            <Binding Path="Name"/>
                            <Binding Path="FirstNode.Value"/>
                        </MultiBinding>
                    </Setter.Value>
                </Setter>
            </DataTrigger>
        </HierarchicalDataTemplate.Triggers>

现在每个包含Value的节点都呈现为：节点名称=值

将XDocument绑定到TreeView - 属性不会显示

2 个答案: