我遇到了以下问题,我需要一些帮助。
(代码被简化以显示我遇到的问题)
我有一个带有内容模板和样式的重复按钮:
<UserControl x:Class="SR.Testing.MyUserControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Border x:Name="Border" SnapsToDevicePixels="True">
<StackPanel>
<RepeatButton x:Name="IncreaseButton" ContentTemplate="{StaticResource ArrowUpNormal}" Style="{StaticResource IncreaseRepeatButtonStyle}" Click="IncreaseClick" />
</StackPanel>
</Border>
</Grid>
</UserControl>
这是数据模板和样式:
<Geometry x:Key="UpArrowGeometry">M0,5 L4.5,.5 9,5 6,5 4.5,3.5 3,5 z</Geometry>
<DataTemplate x:Key="ArrowUpNormal">
<Path Width="18"
Height="10"
Stretch="Fill"
Data="{StaticResource UpArrowGeometry}"
Fill="DarkOrange"
SnapsToDevicePixels="True"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Focusable="False" />
</DataTemplate>
<DataTemplate x:Key="ArrowUpDisabled">
<Path Width="18"
Height="10"
Stretch="Fill"
Data="{StaticResource UpArrowGeometry}"
Fill="Green"
SnapsToDevicePixels="True"
HorizontalAlignment="Center"
VerticalAlignment="Center"
Focusable="False" />
</DataTemplate>
<Style x:Key="IncreaseRepeatButtonStyle" TargetType="{x:Type RepeatButton}">
<Setter Property="BorderThickness" Value="0" />
<Setter Property="Background" Value="Transparent" />
<Setter Property="Height" Value="40" />
<Style.Triggers>
<Trigger Property="IsEnabled" Value="False">
<Setter Property="ContentTemplate" Value="{StaticResource ArrowUpDisabled}" />
</Trigger>
</Style.Triggers>
</Style>
启动应用程序后,重复按钮看起来像预期的那样(深橙色):
但是,当我使用“IncreaseButton.IsEnabled = false;”禁用重复按钮(通过代码隐藏)时
我希望我的样式触发器将箭头变为绿色:
但相反,我得到了这个(箭头保持橙色,背景变为白色/灰色):
是什么导致了这种行为,我该如何解决?谢谢!