c# - WPF 控件可见性

Question

我有一个 WPF 应用程序，我在网格上放置了一个停靠面板，然后默认情况下停靠面板是隐藏的。在网格中，我有一个按钮，当我单击它时，停靠面板的可见性是可见的，我希望停靠面板在 2 秒后隐藏。我该怎么做？

Answer 1

这样试试

<Window x:Class="WpfApplication30.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Title="MainWindow" Height="350" Width="525">
    <Window.Resources>
        <Storyboard x:Key="ShowDock">
            <ObjectAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="dock" Storyboard.TargetProperty="(UIElement.Visibility)">
                <DiscreteObjectKeyFrame KeyTime="00:00:00" Value="{x:Static Visibility.Visible}"/>
                <DiscreteObjectKeyFrame KeyTime="00:00:2" Value="{x:Static Visibility.Collapsed}"/>
            </ObjectAnimationUsingKeyFrames>
        </Storyboard>
    </Window.Resources>

    <Grid>
    <Grid>        
        <Button Content="show" Height="30" Width="100">
                <Button.Triggers>
                    <EventTrigger RoutedEvent="Button.Click">
                        <BeginStoryboard Storyboard="{StaticResource ShowDock}"/>
                    </EventTrigger>
                </Button.Triggers>
            </Button>
    </Grid>
        <DockPanel x:Name="dock" Background="Pink" Visibility="Collapsed"/>
    </Grid>
</Window>