#777 – Animating a Transform

You can animate any of the 2D transforms applied to an element by using a Storyboard that contains an object that derives from AnimationTimeline.

In the example below, we use two DoubleAnimation objects to animate the X and properties of a TranslateTransform, so that the TextBlock wanders around the screen.

For the X property of the transform, we specify that we want it to vary from -100 to 100 and then back again, taking 0.7 seconds and then repeating the pattern forever.  We do something similar for Y, but using a different time period.

    <Grid>
        <TextBlock Text="We shall overcome" HorizontalAlignment="Center" VerticalAlignment="Center"
                   Padding="20,10" Background="PaleGoldenrod" FontSize="16">
            <TextBlock.RenderTransform>
                <TranslateTransform x:Name="transTransform" X="-100" Y="-80"/>
            </TextBlock.RenderTransform>
            <TextBlock.Triggers>
                <EventTrigger RoutedEvent="TextBlock.Loaded">
                    <BeginStoryboard>
                        <Storyboard>
                            <DoubleAnimation Storyboard.TargetName="transTransform"
                                             Storyboard.TargetProperty="X"
                                             From="-100" To="100" Duration="0:0:0.7"
                                             AutoReverse="True" RepeatBehavior="Forever"/>
                            <DoubleAnimation Storyboard.TargetName="transTransform"
                                             Storyboard.TargetProperty="Y"
                                             From="-80" To="80" Duration="0:0:1.5"
                                             AutoReverse="True" RepeatBehavior="Forever"/>
                        </Storyboard>
                    </BeginStoryboard>
                </EventTrigger>
            </TextBlock.Triggers>
        </TextBlock>
    </Grid>

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About Sean
Software developer in the Twin Cities area, passionate about .NET technologies. Equally passionate about my own personal projects related to family history and preservation of family stories and photos.

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