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[英]Set property 'System.Windows.FrameworkElement.Height' threw an exception
[英]Set property 'System.Windows.Controls.Primitives.ToggleButton.IsChecked' threw an exception
我正在尝试使用应用程序资源为 ToggleButton 添加自定义样式,当我将样式调用为 StaticResource 并将其添加到具有属性IsChecked="True"
的 ToggleButton 控件时,出现此错误。
抛出异常:PresentationFramework.dll 中的“System.Windows.Markup.XamlParseException”
'设置属性'System.Windows.Controls.Primitives.ToggleButton.IsChecked' 引发异常。
InvalidOperationException:在“System.Windows.Controls.ControlTemplate”的名称 scope 中找不到“边框”名称。
App.xaml:
<Style x:Key="myToggleSwitch" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Viewbox>
<Grid x:Name="toggleSwitch">
<Border x:Name="Border" CornerRadius="10"
Background="#FFFFFFFF"
Width="80" Height="25">
<Border.Effect>
<DropShadowEffect ShadowDepth="0.5" Direction="0" Opacity="0.3" />
</Border.Effect>
<Ellipse x:Name="Ellipse" Fill="#FFFFFFFF" Stretch="Uniform"
Margin="2 2 2 1"
Stroke="Gray" StrokeThickness="0.2"
HorizontalAlignment="Left" Width="22" >
<Ellipse.Effect>
<DropShadowEffect BlurRadius="10" ShadowDepth="1" Opacity="0.3" Direction="260" />
</Ellipse.Effect>
</Ellipse>
</Border>
<TextBlock x:Name="txtOff" Text="OFF" Margin="0 0 8 0" VerticalAlignment="Center" FontWeight="DemiBold" HorizontalAlignment="Right" Foreground="White"/>
<TextBlock x:Name="txtOn" Text="ON" Margin="15 0 0 0" VerticalAlignment="Center" FontWeight="DemiBold" Foreground="White" HorizontalAlignment="Left"/>
</Grid>
</Viewbox>
<ControlTemplate.Triggers>
<EventTrigger RoutedEvent="Checked">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="Border"
Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
To="#34A543"
Duration="0:0:0.1" />
<ThicknessAnimation Storyboard.TargetName="Ellipse"
Storyboard.TargetProperty="Margin"
To="56 2 2 1"
Duration="0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOff"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="1.0" To="0.0" Duration="0:0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOn"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="0.0" To="1.0" Duration="0:0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
<EventTrigger RoutedEvent="Unchecked">
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="Border"
Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
To="#C2283B"
Duration="0:0:0.1" />
<ThicknessAnimation Storyboard.TargetName="Ellipse"
Storyboard.TargetProperty="Margin"
To="2 2 2 1"
Duration="0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOff"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="0" To="1.0" Duration="0:0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOn"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="1.0" To="0.0" Duration="0:0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
来源:链接
主窗口.xaml:
<Window>
<Grid>
<ToggleButton x:Name="tog" Style="{StaticResource myToggleSwitch}" IsChecked="True" Checked="ToggleButton_Checked"></ToggleButton>
</Grid>
</Window>
主窗口.xaml.cs
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
}
我该如何解决这个问题?
它将按如下方式工作。 使用Trigger.EnterActions
而不是EventTrigger
解决了这个问题。
<Style x:Key="myToggleSwitch" TargetType="{x:Type ToggleButton}">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ToggleButton}">
<Grid x:Name="toggleSwitch">
<Border x:Name="Border" CornerRadius="10"
Background="#FFFFFFFF"
Width="80" Height="25">
<Border.Effect>
<DropShadowEffect ShadowDepth="0.5" Direction="0" Opacity="0.3" />
</Border.Effect>
<Ellipse x:Name="Ellipse" Fill="#FFFFFFFF" Stretch="Uniform"
Margin="2 2 2 1"
Stroke="Gray" StrokeThickness="0.2"
HorizontalAlignment="Left" Width="22" >
<Ellipse.Effect>
<DropShadowEffect BlurRadius="10" ShadowDepth="1" Opacity="0.3" Direction="260" />
</Ellipse.Effect>
</Ellipse>
</Border>
<TextBlock x:Name="txtOff" Text="OFF" Margin="0 0 25 0" VerticalAlignment="Center" FontWeight="DemiBold" HorizontalAlignment="Right" Foreground="White"/>
<TextBlock x:Name="txtOn" Text="ON" Margin="25 0 0 0" VerticalAlignment="Center" FontWeight="DemiBold" Foreground="White" HorizontalAlignment="Left"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="ToggleButton.IsChecked" Value="True">
<Trigger.EnterActions>
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="Border"
Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
To="#34A543"
Duration="0:0:0.1" />
<ThicknessAnimation Storyboard.TargetName="Ellipse"
Storyboard.TargetProperty="Margin"
To="56 2 2 1"
Duration="0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOff"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="1.0" To="0.0" Duration="0:0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOn"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="0.0" To="1.0" Duration="0:0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</Trigger.EnterActions>
<!-- some out fading -->
<Trigger.ExitActions>
<BeginStoryboard>
<Storyboard>
<ColorAnimation Storyboard.TargetName="Border"
Storyboard.TargetProperty="(Border.Background).(SolidColorBrush.Color)"
To="#C2283B"
Duration="0:0:0.1" />
<ThicknessAnimation Storyboard.TargetName="Ellipse"
Storyboard.TargetProperty="Margin"
To="2 2 2 1"
Duration="0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOff"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="0" To="1.0" Duration="0:0:0:0.1" />
<DoubleAnimation
Storyboard.TargetName="txtOn"
Storyboard.TargetProperty="(TextBlock.Opacity)"
From="1.0" To="0.0" Duration="0:0:0:0.1" />
</Storyboard>
</BeginStoryboard>
</Trigger.ExitActions>
<Setter Property="Foreground" Value="{DynamicResource IdealForegroundColorBrush}" />
</Trigger>
<Trigger Property="IsMouseOver" Value="False">
</Trigger>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="Foreground" Value="{DynamicResource GrayBrush7}" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
<Setter Property="VerticalContentAlignment" Value="Center" />
</Style>
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