WPF触发器不工作，我究竟做错了什么？ [英] WPF Trigger not working, what am i doing wrong?
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问题描述
我有以下的code（仅适用于相关的片段）
＆LT;色带：RibbonWindow .............＆GT;
＆LT;电网＆GT;
＆LT;织带：织带＆GT;
＆LT;色带：RibbonToggleButton
X：名称=Button2的
SmallImageSource =图片\ SmallIcon.png
标签=属性＆GT;
＆LT;色带：RibbonToggleButton.Triggers＆GT;
＆LT;触发属性=ToggleButton.IsCheckedVALUE =真＆GT;
＆LT;二传手的TargetName =SPanel1属性=UIElement.IsVisibleVALUE =FALSE/＆GT;
＆LT;二传手的TargetName =SPanel2属性=UIElement.IsVisibleVALUE =真/＆GT;
＆LT; /触发＆GT;
＆LT; /色带：RibbonToggleButton.Triggers＆GT;
＆LT; /色带：RibbonToggleButton＆GT;
＆LT; /色带：色带＆GT;
＆LT; /网格＆GT;
＆LT; /色带：RibbonWindow＆GT;
当我运行应用程序，它挂起来，TE调试器弹出。我究竟做错了什么？
我已经尝试设置对电网的触发器，包一切都在控制模板，并设定一个触发出现，同样的问题！
修改
我试图创造一个按钮，触发只有标记会导致未处理的异常错误。
＆LT;按钮内容=按钮Grid.Row =1高度=23的HorizontalAlignment =左保证金=12,27,0,0名称= TestButtonVerticalAlignment =热门WIDTH =75＆GT;
＆LT; Button.Triggers＆GT;
＆LT;触发＆GT;＆LT; /触发＆GT;
＆LT; /Button.Triggers>
＆LT; /按钮＆GT;
编辑2
使用数据触发使未处理的异常消失，但触发不响应：
＆LT; StackPanel.Style＆GT;
＆LT;风格的TargetType =StackPanel的＆GT;
＆LT; Style.Triggers＆GT;
＆LT; DataTrigger绑定={结合的ElementName = Button2的，路径= ToggleButton.IsChecked}值=真＆GT;
＆LT; setter属性=UIElement.VisibilityVALUE =隐藏＆GT;＆LT; /二传手＆GT;
＆LT; / DataTrigger＆GT;
＆LT; /Style.Triggers>
＆LT; /样式和GT;
＆LT; /StackPanel.Style>
修改3
＆LT;色带：RibbonToggleButton
X：名称=Button2的
SmallImageSource =图片\ SmallIcon.png
标签=属性＆GT;
＆LT; /色带：RibbonToggleButton＆GT;
和面板被隐藏
＆LT;的StackPanel
Grid.Row =2
Grid.Column =1
X：名称=SPanel1
能见度=可见＆GT;
＆LT;标签＆gt; * Deafult电网*＆LT; /标签＆gt;
＆LT; StackPanel.Style＆GT;
＆LT;风格的TargetType =StackPanel的＆GT;
＆LT; Style.Triggers＆GT;
＆LT; DataTrigger绑定={结合的ElementName = Button2的，路径= ToggleButton.IsChecked}值=真＆GT;
＆LT; setter属性=UIElement.VisibilityVALUE =隐藏＆GT;＆LT; /二传手＆GT;
＆LT; / DataTrigger＆GT;
＆LT; /Style.Triggers>
＆LT; /样式和GT;
＆LT; /StackPanel.Style>
＆LT; / StackPanel的＆GT;
和为我想要显示第二的StackPanel
＆LT;的StackPanel
Grid.Row =2
Grid.Column =1
X：名称=SPanel2
能见度=隐藏＆GT;
＆LT;标签＆gt; *面板2 *＆LT; /标签＆gt;
＆LT; StackPanel.Style＆GT;
＆LT;风格的TargetType =StackPanel的＆GT;
＆LT; Style.Triggers＆GT;
＆LT; DataTrigger绑定={结合的ElementName = Button2的，路径=}器isChecked值=真＆GT;
＆LT; setter属性=UIElement.VisibilityVALUE =可见＆GT;＆LT; /二传手＆GT;
＆LT; / DataTrigger＆GT;
＆LT; /Style.Triggers>
＆LT; /样式和GT;
＆LT; /StackPanel.Style>
＆LT; / StackPanel的＆GT;
解决方案
您需要使用DataTrigger，并设置两个面板的样式属性的复选框的属性格式器isChecked，这里的例子
＆LT;复选框名称=检查CONTENT =PROVA=器isChecked真＆GT; ＆LT; /复选框＆GT;
＆LT;帆布NAME =SPanel1背景=蓝WIDTH =100高度=100＆GT;
＆LT; Canvas.Style＆GT;
＆LT;风格的TargetType =画布＆GT;
＆LT; Style.Triggers＆GT;
＆LT; DataTrigger绑定={结合的ElementName =检查，路径=}器isChecked值=真＆GT;
＆LT; setter属性=能见度VALUE =隐藏＆GT;＆LT; /二传手＆GT;
＆LT; / DataTrigger＆GT;
＆LT; /Style.Triggers>
＆LT; /样式和GT;
＆LT; /Canvas.Style>
＆LT; /帆布＆GT;
I have the following code (only relevant snippets)
<ribbon:RibbonWindow .............>
<Grid>
<ribbon:Ribbon>
<ribbon:RibbonToggleButton
x:Name="Button2"
SmallImageSource="Images\SmallIcon.png"
Label="Properties">
<ribbon:RibbonToggleButton.Triggers>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Setter TargetName="SPanel1" Property="UIElement.IsVisible" Value="False"/>
<Setter TargetName="SPanel2" Property="UIElement.IsVisible" Value="True"/>
</Trigger>
</ribbon:RibbonToggleButton.Triggers>
</ribbon:RibbonToggleButton>
</ribbon:Ribbon>
</Grid>
</ribbon:RibbonWindow>
And when i run the application, it hangs up and te debugger pops up. What am i doing wrong?
I have tried setting the trigger on the grid, wrapping everything in a control template and setting a trigger there, same problem!
Edit
I have tried creating a button, and only the tag of trigger causes the Unhandled Exception error.
<Button Content="Button" Grid.Row="1" Height="23" HorizontalAlignment="Left" Margin="12,27,0,0" Name="TestButton" VerticalAlignment="Top" Width="75" >
<Button.Triggers>
<Trigger></Trigger>
</Button.Triggers>
</Button>
Edit 2
Using Data triggers makes the Unhandled Exception go away but the trigger is not responding:
<StackPanel.Style>
<Style TargetType="StackPanel">
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=Button2, Path=ToggleButton.IsChecked}" Value="True">
<Setter Property="UIElement.Visibility" Value="Hidden"></Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</StackPanel.Style>
Edit 3
<ribbon:RibbonToggleButton
x:Name="Button2"
SmallImageSource="Images\SmallIcon.png"
Label="Properties">
</ribbon:RibbonToggleButton>
And The panel to be hidden
<StackPanel
Grid.Row="2"
Grid.Column="1"
x:Name="SPanel1"
Visibility="Visible">
<Label>*Deafult Grid*</Label>
<StackPanel.Style>
<Style TargetType="StackPanel">
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=Button2, Path=ToggleButton.IsChecked}" Value="True">
<Setter Property="UIElement.Visibility" Value="Hidden"></Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</StackPanel.Style>
</StackPanel>
And for second StackPanel that i want to show
<StackPanel
Grid.Row="2"
Grid.Column="1"
x:Name="SPanel2"
Visibility="Hidden">
<Label>*Panel 2 *</Label>
<StackPanel.Style>
<Style TargetType="StackPanel">
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=Button2, Path=IsChecked}" Value="True">
<Setter Property="UIElement.Visibility" Value="Visible"></Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</StackPanel.Style>
</StackPanel>
解决方案
You need to use DataTrigger, and set the style property of the two panels to the IsChecked propery of the checkbox, here an example
<CheckBox Name="check" Content="Prova" IsChecked="True"> </CheckBox>
<Canvas Name="SPanel1" Background="Blue" Width="100" Height="100">
<Canvas.Style>
<Style TargetType="Canvas">
<Style.Triggers>
<DataTrigger Binding="{Binding ElementName=check, Path=IsChecked}" Value="True">
<Setter Property="Visibility" Value="Hidden"></Setter>
</DataTrigger>
</Style.Triggers>
</Style>
</Canvas.Style>
</Canvas>
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