WPF 复选框自定义样式检查消失
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【中文标题】WPF 复选框自定义样式检查消失【英文标题】：WPF Checkbox Custom Style Check disappeared 【发布时间】：2021-05-20 21:06:49 【问题描述】：也许这是多余的，但我找不到任何东西。我可能错过了一些简单的东西。
有问题的复选框是在选择事件的代码隐藏中设置的
chkEmpOK.IsChecked = _cfgUsr.IsEnabled;
在我尝试添加自定义样式之前，这可以正常工作。现在复选框显示文本，但复选框的图像/字形/框部分不显示。我假设我在风格上做错了什么。这是来自 XAML 的控件和样式：
<CheckBox x:Name="chkEmpOK" Grid.Column="2" Grid.Row="4" Margin="10,10,0,0">
<CheckBox.Style>
<Style TargetType="x:Type CheckBox">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="x:Type CheckBox">
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Content" Value="Click Me to Enable"/>
<Setter Property="Foreground" Value="Red"/>
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Content" Value="To remove access- click me"/>
</Trigger>
</ControlTemplate.Triggers>
<ContentPresenter Content="TemplateBinding Content"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</CheckBox.Style>
</CheckBox>
这就是它的样子
希望我错过了一些简单的东西。跟继承ToggleButton有关系吗？
【问题讨论】：
【参考方案1】：无需重写模板来更改内容或前景。样式触发器应该这样做：
<CheckBox x:Name="chkEmpOK" Grid.Column="2" Grid.Row="4" Margin="10,10,0,0">
<CheckBox.Style>
<Style TargetType="x:Type CheckBox">
<Style.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Content" Value="Click Me to Enable"/>
<Setter Property="Foreground" Value="Red"/>
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Content" Value="To remove access- click me"/>
</Trigger>
</Style.Triggers>
</Style>
</CheckBox.Style>
</CheckBox>
【讨论】：
您是绝对正确的，我喜欢您的简单回答。在另一个应用程序中，我为 IsChecked（true 和 false）和 IsEnabled（False）设置了触发器，设置 Content、Foreground、FontWeight 和 Style，用户对可用性非常满意。【参考方案2】：您正在用自己的没有与框相关的代码覆盖原始复选框样式。导航到 Document Outline 窗口，右键单击您的复选框，然后单击 Edit Template -> Edit Copy。
然后你可以将模板样式导入到窗口资源并进行编辑：
<Window.Resources>
<Style x:Key="FocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="2" SnapsToDevicePixels="true" Stroke="DynamicResource x:Static SystemColors.ControlTextBrushKey" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="OptionMark.Static.Background" Color="#FFFFFFFF"/>
<SolidColorBrush x:Key="OptionMark.Static.Border" Color="#FF707070"/>
<Style x:Key="OptionMarkFocusVisual">
<Setter Property="Control.Template">
<Setter.Value>
<ControlTemplate>
<Rectangle Margin="14,0,0,0" SnapsToDevicePixels="true" Stroke="DynamicResource x:Static SystemColors.ControlTextBrushKey" StrokeThickness="1" StrokeDashArray="1 2"/>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<SolidColorBrush x:Key="OptionMark.MouseOver.Background" Color="#FFF3F9FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Border" Color="#FF5593FF"/>
<SolidColorBrush x:Key="OptionMark.MouseOver.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Background" Color="#FFE6E6E6"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Border" Color="#FFBCBCBC"/>
<SolidColorBrush x:Key="OptionMark.Disabled.Glyph" Color="#FF707070"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Background" Color="#FFD9ECFF"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Border" Color="#FF3C77DD"/>
<SolidColorBrush x:Key="OptionMark.Pressed.Glyph" Color="#FF212121"/>
<SolidColorBrush x:Key="OptionMark.Static.Glyph" Color="#FF212121"/>
<Style x:Key="CheckBoxStyle1" TargetType="x:Type CheckBox">
<Setter Property="FocusVisualStyle" Value="StaticResource FocusVisual"/>
<Setter Property="Background" Value="StaticResource OptionMark.Static.Background"/>
<Setter Property="BorderBrush" Value="StaticResource OptionMark.Static.Border"/>
<Setter Property="Foreground" Value="DynamicResource x:Static SystemColors.ControlTextBrushKey"/>
<Setter Property="BorderThickness" Value="1"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="x:Type CheckBox">
<Grid x:Name="templateRoot" Background="Transparent" SnapsToDevicePixels="True">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Border x:Name="checkBoxBorder" BorderBrush="TemplateBinding BorderBrush" BorderThickness="TemplateBinding BorderThickness" Background="TemplateBinding Background" HorizontalAlignment="TemplateBinding HorizontalContentAlignment" Margin="1" VerticalAlignment="TemplateBinding VerticalContentAlignment">
<Grid x:Name="markGrid">
<Path x:Name="optionMark" Data="F1 M 9.97498,1.22334L 4.6983,9.09834L 4.52164,9.09834L 0,5.19331L 1.27664,3.52165L 4.255,6.08833L 8.33331,1.52588e-005L 9.97498,1.22334 Z " Fill="StaticResource OptionMark.Static.Glyph" Margin="1" Opacity="0" Stretch="None"/>
<Rectangle x:Name="indeterminateMark" Fill="StaticResource OptionMark.Static.Glyph" Margin="2" Opacity="0"/>
</Grid>
</Border>
<ContentPresenter x:Name="contentPresenter" Grid.Column="1" Focusable="False" HorizontalAlignment="TemplateBinding HorizontalContentAlignment" Margin="TemplateBinding Padding" RecognizesAccessKey="True" SnapsToDevicePixels="TemplateBinding SnapsToDevicePixels" VerticalAlignment="TemplateBinding VerticalContentAlignment"/>
</Grid>
<ControlTemplate.Triggers>
<Trigger Property="HasContent" Value="true">
<Setter Property="FocusVisualStyle" Value="StaticResource OptionMarkFocusVisual"/>
<Setter Property="Padding" Value="4,-1,0,0"/>
</Trigger>
<Trigger Property="IsMouseOver" Value="true">
<Setter Property="Background" TargetName="checkBoxBorder" Value="StaticResource OptionMark.MouseOver.Background"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="StaticResource OptionMark.MouseOver.Border"/>
<Setter Property="Fill" TargetName="optionMark" Value="StaticResource OptionMark.MouseOver.Glyph"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="StaticResource OptionMark.MouseOver.Glyph"/>
</Trigger>
<Trigger Property="IsEnabled" Value="false">
<Setter Property="Background" TargetName="checkBoxBorder" Value="StaticResource OptionMark.Disabled.Background"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="StaticResource OptionMark.Disabled.Border"/>
<Setter Property="Fill" TargetName="optionMark" Value="StaticResource OptionMark.Disabled.Glyph"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="StaticResource OptionMark.Disabled.Glyph"/>
</Trigger>
<Trigger Property="IsPressed" Value="true">
<Setter Property="Background" TargetName="checkBoxBorder" Value="StaticResource OptionMark.Pressed.Background"/>
<Setter Property="BorderBrush" TargetName="checkBoxBorder" Value="StaticResource OptionMark.Pressed.Border"/>
<Setter Property="Fill" TargetName="optionMark" Value="StaticResource OptionMark.Pressed.Glyph"/>
<Setter Property="Fill" TargetName="indeterminateMark" Value="StaticResource OptionMark.Pressed.Glyph"/>
</Trigger>
<Trigger Property="IsChecked" Value="true">
<Setter Property="Opacity" TargetName="optionMark" Value="1"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="0"/>
<Setter Property="Content" Value="To remove access- click me" />
</Trigger>
<Trigger Property="IsChecked" Value="false">
<Setter Property="Content" Value="Click Me to Enable" />
</Trigger>
<Trigger Property="IsChecked" Value="x:Null">
<Setter Property="Opacity" TargetName="optionMark" Value="0"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="1"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</Window.Resources>
根据需要编辑相关触发器：
<Trigger Property="IsChecked" Value="true">
<Setter Property="Opacity" TargetName="optionMark" Value="1"/>
<Setter Property="Opacity" TargetName="indeterminateMark" Value="0"/>
<Setter Property="Content" Value="To remove access- click me" />
</Trigger>
<Trigger Property="IsChecked" Value="false">
<Setter Property="Content" Value="Click Me to Enable" />
</Trigger>
另一种方法是为盒子添加自己的代码。 就像带有边框和矢量图像的 StackPanel。请参见下面的示例：
<CheckBox x:Name="chkEmpOK" Margin="10,10,0,0">
<CheckBox.Style>
<Style TargetType="x:Type CheckBox">
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="x:Type CheckBox">
<StackPanel Orientation="Horizontal"
SnapsToDevicePixels="True">
<Border Width="15"
Height="14"
BorderThickness="1"
BorderBrush="DimGray"
VerticalAlignment="Center"
Background="TemplateBinding Background">
<Viewbox Margin="1">
<Path
x:Name="ckeckMark"
Fill="Black"
Data="F1 M 9.97498,1.22334L 4.6983,9.09834L 4.52164,9.09834L 0,5.19331L 1.27664,3.52165L 4.255,6.08833L 8.33331,1.52588e-005L 9.97498,1.22334 Z " />
</Viewbox>
</Border>
<ContentPresenter Margin="5 0 0 0"
Focusable="False"/>
</StackPanel>
<ControlTemplate.Triggers>
<Trigger Property="IsChecked" Value="False">
<Setter Property="Content" Value="Click Me to Enable" />
<Setter Property="Foreground" Value="Red" />
<Setter Property="Visibility" Value="Hidden" TargetName="ckeckMark" />
</Trigger>
<Trigger Property="IsChecked" Value="True">
<Setter Property="Content" Value="To remove access- click me" />
<Setter Property="Visibility" Value="Visible" TargetName="ckeckMark" />
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
</CheckBox.Style>
</CheckBox>
另一种方法是使用 Checked 和 Unchecked 事件来设置复选框的内容和颜色。如果您的程序很大，请考虑使用 MVVM 模式。
【讨论】：
首先，谢谢。通过添加您自己的代码，我假设您指的是控件模板是 Grid 或 StackPanel 的其他示例，然后在控件模板中放置一个选中或取消选中的图像和文本。 我用自定义框样式的示例扩展了答案。您可以使用任何您认为最适合您的情况的面板。以上是关于WPF 复选框自定义样式检查消失的主要内容，如果未能解决你的问题，请参考以下文章
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