Views/TestView.xaml

@@ -240,11 +240,21 @@
                             Command="{Binding PrintCommand}"
                             Width="80" Height="40"/>
 
-                    <Button Content="加热" 
-                            Command="{Binding ToggleHeatCommand}"
-                            Width="80" Height="40"
-                            Background="{Binding IsHeating, Converter={StaticResource BoolToVisibilityConverter},
-                            ConverterParameter=DangerBrush, FallbackValue={StaticResource AccentBrush}}"/>
+                    <Button Command="{Binding ToggleHeatCommand}"
+        Width="80" Height="40"
+        Content="加热">
+                        <Button.Style>
+                            <Style TargetType="Button" BasedOn="{StaticResource {x:Type Button}}">
+                                <Setter Property="Background" Value="{StaticResource AccentBrush}"/>
+                                <Setter Property="Foreground" Value="White"/>
+                                <Style.Triggers>
+                                    <DataTrigger Binding="{Binding IsHeating}" Value="True">
+                                        <Setter Property="Background" Value="{StaticResource DangerBrush}"/>
+                                    </DataTrigger>
+                                </Style.Triggers>
+                            </Style>
+                        </Button.Style>
+                    </Button>
 
                     <Button Content="呼气" 
                             Command="{Binding ManualExhaleCommand}"