wpf TreeView HierarchicalDataTemplate 相关 [英] wpf TreeView HierarchicalDataTemplate related

问题描述

我有一个与 HierarchicalDataTemplate 相关的问题.是否可以通过代码继续添加 HierarchicalDataTemplate 或者没有办法做到这一点.我问这个是因为在我以后的情况下，我不知道我是否需要比现在更多的子节点.

I have a question related to HierarchicalDataTemplate. Is it possible to keep adding HierarchicalDataTemplate via code or there is no way to do that. I'm asking this because in my case later i don't know if i will need more child nodes than these i have now.

你可以在下面看到我的树状视图:

below you can see my treeview:

<TreeView Background="#FFF0F0F0" BorderBrush="#FFE5E2DB" IsEnabled="{Binding isAllesEnabled}" ItemsSource="{Binding LijstRechten, UpdateSourceTrigger=PropertyChanged, NotifyOnSourceUpdated=True}" Margin="0,0,0,0" Name="dgStamOverzichtGebruikerRechten" VirtualizingStackPanel.IsVirtualizing="True" VirtualizingStackPanel.VirtualizationMode="Recycling">
    <TreeView.ItemTemplate>
        <!-- Top Level -->
        <HierarchicalDataTemplate ItemsSource="{Binding Childs}">
            <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />

            <!-- 1st Child Level -->
            <HierarchicalDataTemplate.ItemTemplate>
                <HierarchicalDataTemplate ItemsSource="{Binding Childs}">
                    <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />

                    <!-- 2nd Child Level -->
                    <HierarchicalDataTemplate.ItemTemplate>
                        <HierarchicalDataTemplate ItemsSource="{Binding Childs}">
                            <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />

                            <!-- 3rd Child Level -->
                            <HierarchicalDataTemplate.ItemTemplate>
                                <DataTemplate>
                                    <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />
                                </DataTemplate>
                            </HierarchicalDataTemplate.ItemTemplate>

                        </HierarchicalDataTemplate>
                    </HierarchicalDataTemplate.ItemTemplate>

                </HierarchicalDataTemplate>
            </HierarchicalDataTemplate.ItemTemplate>

        </HierarchicalDataTemplate>
    </TreeView.ItemTemplate>
    <TreeView.ItemContainerStyle>
        <Style TargetType="{x:Type TreeViewItem}">
            <Setter Property="IsExpanded"  Value="{Binding IsExpanded, Mode=TwoWay}"/>
            <Setter Property="Margin" Value="2"/>
            <!--<Setter Property="IsSelected" Value="{Binding isSelected, Mode=TwoWay}"/>
            <EventSetter Event="Selected" Handler="TreeViewSelectedItemChanged" />-->
        </Style>
    </TreeView.ItemContainerStyle>
</TreeView>

提前致谢！

推荐答案

对于你的问题，假设所有的孩子都是相同的类型.. 只需在你的窗口资源中定义一个 HierarchicalDataTemplate 任何 x:key 并放置 DataType 这是你的 Child 对象的类型......你的整个树将填充..

For your problem, assuming all the childs are of same type.. just define one HierarchicalDataTemplate in your window's resources without any x:key and put the DataType which is type of your Child object...Your whole tree will populate..

<HierarchicalDataTemplate DataType="{local:YourParentType}"
                              ItemsSource="{Binding Childs}">
    <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />
</HierarchicalDataTemplate>


<HierarchicalDataTemplate DataType="{local:YourChildType}" 
                          ItemsSource="{Binding Childs}">
    <CheckBox IsChecked="{Binding isChecked}" Content="{Binding naam}" />
</HierarchicalDataTemplate>

这里假设 local 是定义您的 Child 类的命名空间 (xmlns)

here assuming local is the namespace (xmlns) in which your Child class is defined

这篇关于wpf TreeView HierarchicalDataTemplate 相关的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！