.net - WPF - 如何使文本垂直滚动和暂停

Question

我的页面有一部分专门用于显示学分，并且有三个垂直滚动的文本块。然而，我需要每一行在进入位置(面板中的一个位置)时暂停，然后在一秒钟左右后继续。如果不让这一切变得非常复杂，我不知道如何做到这一点。我让所有三行滚动在一起，但不知道如何让它暂停。

我什至尝试过 DoubleAnimationUsingKeyFrames 但也无法正常工作。

任何指针？

Answer 1

诀窍是设置 BeginTime动画，就像在这个示例中一样。

<Window x:Class="WpfApplication1.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Titles" SizeToContent="WidthAndHeight">
    <Window.Resources>
        <Style TargetType="Grid">
            <Setter Property="Width" Value="300" />
            <Setter Property="Height" Value="100" />
        </Style>
        <Style TargetType="TextBlock">
            <Setter Property="HorizontalAlignment" Value="Center" />
            <Setter Property="VerticalAlignment" Value="Center" />
            <Setter Property="FontSize" Value="20" />
        </Style>
        <Style TargetType="StackPanel">
            <Setter Property="Canvas.Top" Value="200" />
            <Style.Triggers>
                <EventTrigger RoutedEvent="Loaded">
                    <BeginStoryboard>
                        <Storyboard RepeatBehavior="Forever">
                            <DoubleAnimation Storyboard.TargetProperty="(Canvas.Top)" From="300"  To="100"  BeginTime="0:00:00" Duration="0:00:02" />
                            <DoubleAnimation Storyboard.TargetProperty="(Canvas.Top)" From="100"  To="0"    BeginTime="0:00:04" Duration="0:00:01" />
                            <DoubleAnimation Storyboard.TargetProperty="(Canvas.Top)" From="0"    To="-100" BeginTime="0:00:06" Duration="0:00:01" />
                            <DoubleAnimation Storyboard.TargetProperty="(Canvas.Top)" From="-100" To="-300" BeginTime="0:00:08" Duration="0:00:02" />
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </Style.Triggers>
        </Style>
    </Window.Resources>
    <Canvas Width="300" Height="300">
        <StackPanel>
            <Grid>
                <TextBlock Text="Name 1" />
            </Grid>
            <Grid>
                <TextBlock Text="Name 2" />
            </Grid>
            <Grid>
                <TextBlock Text="Name 3" />
            </Grid>
        </StackPanel>
    </Canvas>
</Window>