WPF — Animation Question

问题

New to WPF. Simple scenario. Can't figure out the right way to do this.

Say I have a single Button. I also have four TextBlocks. I want that one button to trigger an animation (Opacity from 0 to 1) on all of the TextBlocks at the same time.

Thanks in advance!

回答1:

This should do it...

<Window
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    x:Class="WpfApplication1.MainWindow"
    x:Name="Window"
    Title="MainWindow"
    Width="640" Height="480">
    <Window.Resources>
        <Storyboard x:Key="OnClick1">
            <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="textBlock" Storyboard.TargetProperty="(UIElement.Opacity)">
                <SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
                <SplineDoubleKeyFrame KeyTime="00:00:00.5000000" Value="1"/>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="textBlock1" Storyboard.TargetProperty="(UIElement.Opacity)">
                <SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
                <SplineDoubleKeyFrame KeyTime="00:00:00.5000000" Value="1"/>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="textBlock2" Storyboard.TargetProperty="(UIElement.Opacity)">
                <SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
                <SplineDoubleKeyFrame KeyTime="00:00:00.5000000" Value="1"/>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames BeginTime="00:00:00" Storyboard.TargetName="textBlock3" Storyboard.TargetProperty="(UIElement.Opacity)">
                <SplineDoubleKeyFrame KeyTime="00:00:00" Value="0"/>
                <SplineDoubleKeyFrame KeyTime="00:00:00.5000000" Value="1"/>
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>
    </Window.Resources>
    <Window.Triggers>
        <EventTrigger RoutedEvent="ButtonBase.Click" SourceName="button">
            <BeginStoryboard Storyboard="{StaticResource OnClick1}"/>
        </EventTrigger>
    </Window.Triggers>

    <Grid x:Name="LayoutRoot">
        <StackPanel>
            <Button x:Name="button" Width="131" Height="37" Content="Button" Margin="0,0,0,22"/>
            <TextBlock x:Name="textBlock" Height="27" Text="TextBlock 1" TextWrapping="Wrap" Opacity="0"/>
            <TextBlock x:Name="textBlock1" Height="27" Text="TextBlock 2" TextWrapping="Wrap" Opacity="0"/>
            <TextBlock x:Name="textBlock2" Height="27" Text="TextBlock 3" TextWrapping="Wrap" Opacity="0"/>
            <TextBlock x:Name="textBlock3" Height="27" Text="TextBlock 4" TextWrapping="Wrap" Opacity="0"/>
        </StackPanel>
    </Grid>
</Window>

来源：https://stackoverflow.com/questions/1238817/wpf-animation-question

标签

wpf

animation

triggers

storyboard