如何切换treeviewitem的模板 [英] how to switch template of treeviewitem

问题描述

<window>
<window.resources>
<style x:Key="Style1" TargetType="TreeviewItem">
.
.
</Style>

<style x:Key="Style2" TargetType="TreeviewItem">
.
.
</Style>
</window.resources>
<grid>

<treeview x:Name="tree1">
<treeviweitem header="A" />
  <treeviweitem header="A1" />
  <treeviweitem header="A2" />
<treeviweitem header="B" />
</treeView>

<treeview x:Name="tree2"/>
<treeviewitem header="C" />
  <treeviewitem header="C1" />
  <treeviewitem header="C2" />
<treeviewitem header="D" />
</grid>
</window>

我有一个问题，希望得到你的帮助拜托！

我的问题是



1，如何设置tree1的所有treeviewitem（包括AA1 A2B）应用样式style1



2，如何设置tree2的所有treeviewitem（包括CC1 C2D）应用风格style2





我知道可以设置每个treeviewitem样式这个

I have a question, hope to get your help please!
my question is

1、how to set that all of treeviewitem of "tree1"(include "A" "A1" "A2" "B") to apply the style "style1"

2、how to set that all of treeviewitem of "tree2"(include "C" "C1" "C2" "D") to apply the style "style2"


I know can do that set each of treeviewitem style like this

<treeviewitem header="C" Style="{Staticresource style2}"/>
  <treeviewitem header="C1" Style="{Staticresource style2}"/>
  <treeviewitem header="C2" Style="{Staticresource style2}"/>
<treeviewitem header="D" Style="{Staticresource style2}"/>

，但这太愚蠢了（这需要设置每个listviewitem）

, but this is too stupid(this need set each of listviewitem)

推荐答案

你好，



您可以在TreeView的私有资源字典中嵌入默认样式，或设置TreeView的ItemContainerStyle。

Hello,

You can embed a default style in TreeView's private resource dictionary, or set TreeView's ItemContainerStyle.

<TreeView>
   <Treeview.resources>
     <Style Targettype="{x:Type TreeViewItem}">
            BasedOn="{StaticResource {x:Type TreeViewItem}}">
       <Setter Property="Background" Value="Green" />
     </Style>
   </Treeview.resources>
   <Treeviewitem header="Merry" />
   <Treeviewitem header="Christmas" />
</Treeview> 

<Grid.Resources>
   <ResourceDictionary>
     <Style x:Key="style" TargetType="{x:Type TreeViewItem}"

            BasedOn="{StaticResource {x:Type TreeViewItem}}">
            <Setter Property="Background" Value="Green" />            
            <Setter Property="ItemContainerStyle" Value="{Binding ItemContainerStyle, RelativeSource={RelativeSource AncestorType={x:Type TreeView}}}" />
     </Style>            
   </ResourceDictionary>
 </Grid.Resources>
  
 <TreeView ItemContainerStyle="{StaticResource style}">
   <TreeViewItem Header="Merry" >
     <TreeViewItem Header="Christmas" />
   </TreeViewItem>
 </TreeView>

问候

Joseph Leung

Regards
Joseph Leung

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