blocks|key|1159272|text|不幸的是，只有EventTriggers可以直接应用于元素。如果要使用Trigger或DataTrigger，它们必须在Style、ControlTemplate或DataTemplate中。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1159273|从资源名称看，这看起来像是ListBoxItem+ControlTemplate中的Border。您可以轻松地将触发器移动到模板的triggers集合中。|1159274|entityMap^0|7|D|Z|7|17|B|1O|5|1U|F|2A|C|0|D|B|P|F|16|6|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]|$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]|$9|U|A|V|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|W|8|@$9|X|A|Y|B|C]|$9|Z|A|10|B|C]|$9|11|A|12|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|13|8|@]|D|@]|E|$]]]|I|$]]

Unfortunately, only <code>EventTriggers</code> can be applied directly to elements. If you want to use a <code>Trigger</code> or <code>DataTrigger</code>, they have to be in a <code>Style</code>, <code>ControlTemplate</code>, or <code>DataTemplate</code>. 

From the resource names, it looks like this is a <code>Border</code> inside a <code>ListBoxItem</code> <code>ControlTemplate</code>. You could easily move the triggers into the template's triggers collection.

blocks|key|945336|text|Abe是正确的，并很好地解释了这些限制。您可能需要考虑的一件事是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|945337|而不是有两种边框样式，并试图根据触发器在它们之间进行选择...|945338|在你的边框上使用一个单一的样式，这个样式的setter代表你的“正常”外观。此样式还包含您的DataTrigger，并且您的DataTrigger有一个setter集合，这些setter实际上代表您的第二个样式(当此触发器的计算结果为真时，这些setter的优先级高于标准setter！|945339|编辑：|945340|像这样的东西-|945341|<Style+TargetType="Border"+x:Key="BorderStyle">
++++
++++<Setter+Property="BorderBrush"+Value="Black"+/>
++++<Style.Triggers>
++++++++<DataTrigger+Binding="{Binding+Path=CurrentStatus}"+Value="0">
++++++++++++
++++++++++++<Setter+Property="BorderBrush"+Value="Green"+/>
++++++++</DataTrigger>
++++++++<DataTrigger+Binding="{Binding+Path=CurrentStatus}"+Value="200">
++++++++++++
++++++++++++<Setter+Property="BorderBrush"+Value="Gray"+/>
++++++++</DataTrigger>
++++</Style.Triggers>
</Style>|code-block|syntax|javascript|945342|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|U|8|@]|9|@]|A|$]]|$1|J|3|K|5|L|7|V|8|@]|9|@]|A|$M|N]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Abe is correct and explains the limitations well. One thing you might want to consider is:

Instead of having two border styles, and trying to pick between them based on a trigger...

Use a single style on your border, this style's setters represent your 'normal' look.
This style also contains your DataTrigger, and your DataTrigger has a collection of setters which essentially represents your second style (which have higher priority than the standard setters when this trigger evaluates to true!

Edit:

Something like this -

<pre><code>&lt;Style TargetType="Border" x:Key="BorderStyle"&gt;
 &lt;!-- These setters are the same as your normal style when none of your triggers are true --&gt;
 &lt;Setter Property="BorderBrush" Value="Black" /&gt;
 &lt;Style.Triggers&gt;
 &lt;DataTrigger Binding="{Binding Path=CurrentStatus}" Value="0"&gt;
 &lt;!-- These setters are the same as your ListBoxItemBorder style --&gt;
 &lt;Setter Property="BorderBrush" Value="Green" /&gt;
 &lt;/DataTrigger&gt;
 &lt;DataTrigger Binding="{Binding Path=CurrentStatus}" Value="200"&gt;
 &lt;!-- These setters are the same as your ListBoxItemBorderInactive style --&gt;
 &lt;Setter Property="BorderBrush" Value="Gray" /&gt;
 &lt;/DataTrigger&gt;
 &lt;/Style.Triggers&gt;
&lt;/Style&gt;
</code></pre>

blocks|key|945370|text|这里有一种无限制触发器的方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|945371|示例：|945372|+<Border+Width="130"+Height="100"+Grid.Row="1">
++++++++<ListBox+x:Name="lstItems"+ItemsSource="{Binding+TestItems}">

++++++++</ListBox>
++++++++<tg:TriggerExtensions.Triggers>
++++++++++++<tg:TriggerCollections>
++++++++++++++++<tg:DataTriggerInfo+Binding="{Binding+CurrentStatus}"+Value="0">
++++++++++++++++++++<tg:DataTriggerInfo.Setters>
++++++++++++++++++++++++<tg:SetterInfo+ElementName="lstItems"+Property="Style"+Value="{StaticResource+ListBoxRed}"/>
++++++++++++++++++++</tg:DataTriggerInfo.Setters>
++++++++++++++++</tg:DataTriggerInfo>
++++++++++++++++<tg:DataTriggerInfo+Binding="{Binding+CurrentStatus}"+Value="0"+IsInvert="True">
++++++++++++++++++++<tg:DataTriggerInfo.Setters>
++++++++++++++++++++++++<tg:SetterInfo+ElementName="lstItems"+Property="Style"+Value="{StaticResource+ListBoxBlue}"/>
++++++++++++++++++++</tg:DataTriggerInfo.Setters>
++++++++++++++++</tg:DataTriggerInfo>
++++++++++++</tg:TriggerCollections>
++++++++</tg:TriggerExtensions.Triggers>
++++</Border>|code-block|syntax|javascript|945373|链接Sample|offset|length|945374|链接组件Github|945375|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/Ali-YousefiTelori/ExampleOfMvvmGo|1|https://github.com/Ali-YousefiTelori/MvvmGo^0|0|0|0|2|6|0|0|4|6|1|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|10|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|11|8|@]|9|@$K|12|L|13|1|14]]|A|$]]|$1|M|3|N|5|6|7|15|8|@]|9|@$K|16|L|17|1|18]]|A|$]]|$1|O|3|-4|5|6|7|19|8|@]|9|@]|A|$]]]|P|$Q|$5|R|S|T|A|$U|V]]|W|$5|R|S|T|A|$U|X]]]]

Here is a way for no limitations triggers.

Example:

<pre><code> &lt;Border Width="130" Height="100" Grid.Row="1"&gt;
 &lt;ListBox x:Name="lstItems" ItemsSource="{Binding TestItems}"&gt;

 &lt;/ListBox&gt;
 &lt;tg:TriggerExtensions.Triggers&gt;
 &lt;tg:TriggerCollections&gt;
 &lt;tg:DataTriggerInfo Binding="{Binding CurrentStatus}" Value="0"&gt;
 &lt;tg:DataTriggerInfo.Setters&gt;
 &lt;tg:SetterInfo ElementName="lstItems" Property="Style" Value="{StaticResource ListBoxRed}"/&gt;
 &lt;/tg:DataTriggerInfo.Setters&gt;
 &lt;/tg:DataTriggerInfo&gt;
 &lt;tg:DataTriggerInfo Binding="{Binding CurrentStatus}" Value="0" IsInvert="True"&gt;
 &lt;tg:DataTriggerInfo.Setters&gt;
 &lt;tg:SetterInfo ElementName="lstItems" Property="Style" Value="{StaticResource ListBoxBlue}"/&gt;
 &lt;/tg:DataTriggerInfo.Setters&gt;
 &lt;/tg:DataTriggerInfo&gt;
 &lt;/tg:TriggerCollections&gt;
 &lt;/tg:TriggerExtensions.Triggers&gt;
 &lt;/Border&gt;
</code></pre>

Link <a href="https://github.com/Ali-YousefiTelori/ExampleOfMvvmGo" rel="nofollow noreferrer">Sample</a>

Link Component <a href="https://github.com/Ali-YousefiTelori/MvvmGo" rel="nofollow noreferrer">Github</a>

Why cant I code like this

<pre><code>&lt;Border Width="130" Height="70"&gt;
 &lt;Border.Triggers&gt;
 &lt;DataTrigger Binding="{Binding Path=CurrentStatus}" Value="0"&gt;
 &lt;Setter Property="Style" Value="{StaticResource ResourceKey=ListBoxItemBorder}"/&gt;
 &lt;/DataTrigger&gt;
 &lt;DataTrigger Binding="{Binding Path=CurrentStatus}" Value="200"&gt;
 &lt;Setter Property="Style" Value="{StaticResource ResourceKey=ListBoxItemBorderInactive}"/&gt;
 &lt;/DataTrigger&gt;
 &lt;/Border.Triggers&gt;
&lt;/Border&gt;
</code></pre>

I get this error 

<pre><code>Failed object initialization (ISupportInitialize.EndInit). 
Triggers collection members must be of type EventTrigger. 
Error at object '4_T' in markup file
</code></pre>

What am I doing wrong plz help.

Why can't I add a DataTrigger to my control's Triggers collection?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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为什么我不能这样写代码呢？<Border Width="130" Height="70"> <Border.Triggers> <DataTrigger Binding="{Binding Path=CurrentStatus}" Value="0"> <Setter Prop...

问为什么不能将DataTrigger添加到控件的Triggers集合中？
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问为什么不能将DataTrigger添加到控件的Triggers集合中？EN