如何从treeview获取值。 [英] How to get a value from treeview.

问题描述

您好！

我有树视图：

<前lang =xml> < TreeView

BorderBrush = 黑色

BorderThickness = 2

< span class =code-attribute>光标 = 手

ItemsSource = {Binding Data，UpdateSourceTrigger = PropertyChanged } >
< TreeView.ItemContainerStyle >
< 样式 TargetType = {x：输入TreeViewItem} >
< < span class =code-leadattribute> Setter

属性 = IsSelected

值 = {Binding SelectedPath，Mode = TwoWay} / >
< / Style >
< / TreeView.ItemContainerStyle >
< TreeView.ItemTemplate >
< ; HierarchicalDataTemplate

ItemsSource = {
Binding Persons，
UpdateSourceTrigger = PropertyChanged}

DataType = {x：输入local：Data} >
< 网格 >
< StackPanel 方向 = 水平 >
< TextBlock x：名称 = dane 文字 = {Binding ID} 保证金 = 0,0,5,0 / >
< 按钮

样式 = {StaticResource ButtonLikeTextBlock}

内容 = {Binding DataOrName}

< span class =code-attribute> 命令 =
{Binding
Path = DataContext.DisplayInfoCommand，
RelativeSource = {RelativeSource FindAncestor，AncestorType = {x：Type Window}}} / >

< / StackPanel >
< / Grid >
< / HierarchicalDataTemplate >
< / TreeView.ItemTemplate >
< / TreeView >

我如何获得P中的ID属性ersons列表？我怎么能直接绑定到viewmodel类？你能展示样品代码吗？



问候，Boryborawski。

解决方案

为什么不用CommandParameter？



查看 WPF中的多重绑定和命令参数 [ ^ ]

Hello!
I have a treeview:

<TreeView  

    BorderBrush="Black" 

    BorderThickness="2" 

    Cursor="Hand" 

    ItemsSource="{Binding Data, UpdateSourceTrigger=PropertyChanged}" >
    <TreeView.ItemContainerStyle>
	<Style TargetType="{x:Type TreeViewItem}">
		<Setter 

                    Property="IsSelected" 

                    Value="{Binding SelectedPath, Mode=TwoWay}" />
		</Style>
    </TreeView.ItemContainerStyle>
    <TreeView.ItemTemplate>
        <HierarchicalDataTemplate 

            ItemsSource="{
                            Binding Persons, 
                            UpdateSourceTrigger=PropertyChanged}" 

            DataType="{x:Type local:Data}" >
            <Grid>
		<StackPanel Orientation="Horizontal">
    		<TextBlock x:Name="dane" Text="{Binding ID}" Margin="0,0,5,0" />
                <Button 

                    Style="{StaticResource ButtonLikeTextBlock}" 

                    Content="{Binding DataOrName}" 

                    Command="
                            {Binding 
                                    Path=DataContext.DisplayInfoCommand, 
                                    RelativeSource = {RelativeSource FindAncestor, AncestorType={x:Type Window}}}" />
								
		</StackPanel>
            </Grid>
        </HierarchicalDataTemplate>
    </TreeView.ItemTemplate>
</TreeView>

How can i get the ID property which is in Persons list ? How can i bind it straight to viewmodel class? Can u show sample code?

Greetings, Boryborawski.

解决方案

Why don''t you use CommandParameter?

have a look on MultiBinding and Command Parameters in WPF[^]

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