首页 WPF C#

# 说在前面

其实并不是扩展了 TextBlock，而是使用了一个只读的 TextBox，修改了样式使之看起来像 TextBlock，效果如图
20250923102642.png

# 关键样式

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<Style
    x:Key="SelectableTextBlock"
    BasedOn="{StaticResource {x:Type TextBox}}"
    TargetType="TextBox">
    <Style.Resources>
        <SolidColorBrush x:Key="TextControlBorderBrushPointerOver" Color="Transparent" />
        <SolidColorBrush x:Key="TextControlBorderBrushFocused" Color="Transparent" />
        <SolidColorBrush x:Key="TextControlBorderBrush" Color="Transparent" />
        <SolidColorBrush x:Key="TextControlBorderBrushDisabled" Color="Transparent" />
        <Style x:Key="TextControlContentHostStyle" TargetType="ScrollViewer">
            <Setter Property="Margin" Value="0" />
            <Setter Property="Padding" Value="0" />
            <Setter Property="BorderThickness" Value="0" />
            <Setter Property="Background" Value="Transparent" />
        </Style>
    </Style.Resources>
    <Setter Property="Background" Value="Transparent" />
    <Setter Property="IsReadOnly" Value="True" />
    <Setter Property="BorderThickness" Value="0" />
    <Setter Property="TextWrapping" Value="Wrap" />
    <Setter Property="Padding" Value="0" />
    <Setter Property="Margin" Value="0" />
    <Setter Property="MinHeight" Value="0" />
    <Setter Property="FontFamily" Value="{DynamicResource ContentControlThemeFontFamily}" />
    <Setter Property="FontSize" Value="{DynamicResource ControlContentThemeFontSize}" />
    <Setter Property="VerticalContentAlignment" Value="Center" />
    <Style.Triggers>
        <Trigger Property="IsEnabled" Value="False">
            <Setter Property="Background" Value="Transparent" />
            <Setter Property="Foreground" Value="{DynamicResource TextControlForegroundDisabled}" />
        </Trigger>
    </Style.Triggers>
</Style>

# 修改内容

  1. 删除了获得焦点后的发光外边框
  2. 使容器高度缩减为文本高度
  3. 删除了禁用后的背景色

# 使用

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<TextBox Style="{StaticResource SelectableTextBlock}" Text="{Binding Description}" />