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我有一个应用程序需要使按钮文本闪烁/眨眼取决于依赖项对象(下面的示例XAML使用复选框的IsChecked)。我尝试了很多我在Google搜索中看到的不同技巧,但都无济于事。WPF textblock blink
下面是我为此创建的示例XAML代码,并且必须有我丢失的东西。有人可以帮忙吗?
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<Window x:Class="WpfTestBed.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="414" Width="751">
<Window.Resources>
<Style x:Key="SB_BaseGradientButton" TargetType="Button">
<Style.Resources>
<Color x:Key="StartColor">Gray</Color>
<Color x:Key="EndColor">White</Color>
<SolidColorBrush x:Key="PressedForegroundColor" Color="Black"/>
</Style.Resources>
<Setter Property="Margin" Value="2,2,2,2" />
<Setter Property="Foreground" Value="Black" />
<Setter Property="FontSize" Value="14" />
</Style>
<Storyboard x:Key="FlashBlockTextStoryBoard">
<ObjectAnimationUsingKeyFrames RepeatBehavior="Forever" Storyboard.TargetName="txtButtonFace" Storyboard.TargetProperty="(UIElement.Visibility)">
<DiscreteObjectKeyFrame KeyTime="0:0:0.5" Value="{x:Static Visibility.Hidden}" />
<DiscreteObjectKeyFrame KeyTime="0:0:1" Value="{x:Static Visibility.Visible}" />
</ObjectAnimationUsingKeyFrames>
</Storyboard>
<Style BasedOn="{StaticResource {x:Type TextBlock}}" x:Key="FlashTextBlock" TargetType="TextBlock">
<Style.Triggers>
<DataTrigger Binding="{Binding Path=checkBox1.IsChecked}" Value="True">
<DataTrigger.EnterActions>
<BeginStoryboard Name="storyboard" Storyboard="{StaticResource FlashBlockTextStoryBoard}" />
</DataTrigger.EnterActions>
<DataTrigger.ExitActions>
<StopStoryboard BeginStoryboardName="storyboard" />
</DataTrigger.ExitActions>
</DataTrigger>
</Style.Triggers>
</Style>
</Window.Resources>
<Grid Margin="10,10,10,10" >
<Grid.RowDefinitions>
<RowDefinition Height="40*"/>
<RowDefinition Height="12*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="12*" MaxWidth="210"/>
<ColumnDefinition Width="20*"/>
</Grid.ColumnDefinitions>
<Button Grid.Column="1" MaxHeight="70" MaxWidth="150"
FontSize="16" Style="{StaticResource SB_BaseGradientButton}" Margin="320,0,29,12" Grid.Row="1">
<TextBlock Name="txtButtonFace" TextAlignment="Center" Text="This Is Test"
Style="{StaticResource FlashTextBlock}">
</TextBlock>
</Button>
<CheckBox Content="Make button flash" Grid.Column="1" Height="16" HorizontalAlignment="Left" Margin="44,24,0,0"
Name="checkBox1" VerticalAlignment="Top" Grid.Row="1" />
</Grid>
</Window>
任何帮助您为WPF重新发明“眨眼”的人都会被我拒绝。 :-) –
更严肃的说明 - 这个XAML生产什么?您是否在调试时查看了输出窗口,以查看是否存在绑定错误。 –