当 IsPress=True 时按钮控件样式改变背景，但它永远不会变回原来的颜色

Question

我在 XAML 资源字典中定义了一个应用程序默认按钮样式。 ControlTemplate 包含 IsPressed="True" 的触发器，它会在按下按钮时更改按钮背景。

但是，按下并释放按钮后，IsPressed="True"期间设置的背景颜色永远不会变回原来的背景颜色。

这是在 VS 2019 和 .NET core v3.1 中。

按钮xaml是：

<Button x:Name="btnHelp" Width="50" Height="25" Content="_Help" Click="btnHelp_Click"  BorderBrush="AliceBlue" Margin="10,0,0,0" HorizontalAlignment="Center" VerticalAlignment="Center"/>

这是我的资源字典中的按钮样式定义：

    <Style TargetType="{x:Type Button}">
    <Setter Property="Padding" Value="1" />
    <Setter Property="Foreground" Value="{DynamicResource TextBrush}" />
    <Setter Property="Background" Value="{DynamicResource ButtonBackgroundBrush}" />
    <Setter Property="BorderBrush" Value="{DynamicResource BaseBorderBrush}" />
    <Setter Property="BorderThickness" Value="{DynamicResource ButtonBorderThickness}" />
    <Setter Property="Template">
        <Setter.Value>
            <ControlTemplate TargetType="{x:Type Button}">
                <Border
                    x:Name="outerborder"
                    Background="{TemplateBinding Background}"
                    BorderBrush="{TemplateBinding BorderBrush}"
                    BorderThickness="{TemplateBinding BorderThickness}"
                    ClipToBounds="True"
                    CornerRadius="{DynamicResource ButtonCornerRadius}">
                    <Grid>
                        <Border
                            Name="glow"
                            Margin="{DynamicResource GlowBorderMargin}"
                            BorderBrush="{DynamicResource ButtonGlowBrush}"
                            BorderThickness="{DynamicResource GlowBorderThickness}"
                            CornerRadius="{DynamicResource ButtonCornerRadius}"
                            Effect="{DynamicResource ButtonHoverGlowEffect}"
                            Visibility="Collapsed" />
                        <ContentPresenter
                            x:Name="content"
                            Margin="{TemplateBinding Padding}"
                            HorizontalAlignment="{TemplateBinding HorizontalContentAlignment}"
                            VerticalAlignment="{TemplateBinding VerticalContentAlignment}"
                            RecognizesAccessKey="True"
                            SnapsToDevicePixels="{TemplateBinding SnapsToDevicePixels}" />
                    </Grid>
                </Border>
                <ControlTemplate.Triggers>
                    <Trigger Property="IsMouseOver" Value="True">
                        <Setter Property="BorderBrush" Value="{DynamicResource SelectedBrush}" />
                        <Setter Property="Background" Value="{DynamicResource MenuHoverBrush}" />
                        <!--<Setter TargetName="glow" Property="Visibility" Value="Visible" />-->
                    </Trigger>
                    <Trigger Property="IsPressed" Value="True">
                        <Setter Property="Background" Value="{DynamicResource ButtonBackgroundPressedBrush}" />
                        <Setter Property="BorderBrush" Value="{DynamicResource DarkerSelectedBrush}" />
                        <Setter TargetName="glow" Property="Effect" Value="{DynamicResource ButtonPressedGlowEffect}" />
                        <Setter TargetName="glow" Property="Visibility" Value="Visible" />
                    </Trigger>
                    <Trigger Property="IsFocused" Value="True" >
                        <Setter Property="BorderBrush" Value="{DynamicResource SelectedBrush}" />
                        <Setter Property="Background" Value="{DynamicResource MenuHoverBrush}" />
                    </Trigger>
                    <Trigger Property="IsEnabled" Value="False">
                        <Setter Property="Background" Value="Transparent" />
                        <Setter TargetName="outerborder" Property="BorderBrush" Value="{DynamicResource DisabledBorderBrush}" />
                        <Setter Property="Foreground" Value="{DynamicResource DisabledBrush}" />
                    </Trigger>
                </ControlTemplate.Triggers>
            </ControlTemplate>
        </Setter.Value>
    </Setter>
</Style>

Answer 1

罪魁祸首是 IsFocused 触发器中的下面一行。当您单击 Button 时，它会获得焦点，因此触发器将设置按钮的 Background。如果您将焦点移动到另一个控件，例如按 Tab，背景将变回正常。由于您对 Pressed 和 Focused 状态使用相同的背景，因此 看起来 卡在按下状态，但是专注。

<Setter Property="Background" Value="{DynamicResource MenuHoverBrush}" />

从触发器中删除线，您的按钮将按预期工作。

<Trigger Property="IsFocused" Value="True" >
    <Setter Property="BorderBrush" Value="{DynamicResource SelectedBrush}" />
</Trigger>

当 IsPress=True 时按钮控件样式改变背景，但它永远不会变回原来的颜色

Button control style changes the background when IsPress=True, but it never changes back to the original color

c#

wpf

xaml

styles

controltemplate