Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Welcome To Ask or Share your Answers For Others

Categories

0 votes
216 views
in Technique[技术] by (71.8m points)

XAML Grid Visibility Transition?

I have a Grid that has Visibility bound to a property in my viewmodel. This all works fine -- the Grid appears/disappears correctly. My question is, how can I apply a transition so that instead of just instantly disappearing from the screen, the grid content slides into the edge of the UI? When made visible it should slide back out again.

 <Grid Grid.Row="0" Grid.RowSpan="2"
              Grid.Column="0"
              Margin="30,30,0,30"
              Visibility="{Binding IsSearchEnabled, Converter={StaticResource visibilityConverter}}">
            <Grid.RowDefinitions>
                <RowDefinition Height="60"></RowDefinition>
                <RowDefinition Height="*"></RowDefinition>
            </Grid.RowDefinitions>

...

See Question&Answers more detail:os

与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

So as a quick example, one way of doing this;

<Grid Grid.RowSpan="2" x:Name="TheGrid"
      Margin="30,30,0,30"
      Visibility="{Binding IsSearchEnabled, Converter={StaticResource visibilityConverter}}">
      <Grid.RowDefinitions>
           <RowDefinition Height="60"/>
           <RowDefinition Height="*"/>
      </Grid.RowDefinitions>
      <!-- Start the magic -->
      <Grid.RenderTransform>
           <TranslateTransform x:Name="SlideIn" X="750" />
      </Grid.RenderTransform>
      <Grid.Triggers>
           <EventTrigger RoutedEvent="Grid.Loaded">
                 <BeginStoryboard>
                       <Storyboard>
                            <DoubleAnimationUsingKeyFrames Storyboard.TargetName="SlideIn" Storyboard.TargetProperty="X">
                                 <SplineDoubleKeyFrame KeyTime="0:0:1.25" Value="0" />
                            </DoubleAnimationUsingKeyFrames>
                            <DoubleAnimationUsingKeyFrames Storyboard.TargetName="TheGrid" Storyboard.TargetProperty="Opacity">
                                  <SplineDoubleKeyFrame KeyTime="0:0:1.55" Value="1" />
                            </DoubleAnimationUsingKeyFrames>
                       </Storyboard>
                  </BeginStoryboard>
            </EventTrigger>
        </Grid.Triggers>
</Grid>

This will slide it in when it's loaded and even fade in as it goes. You might have to play with the "X" value on SlideIn to get it off the screen to your liking. You could reverse it for the other direction.

Hope this helps.


与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…
OGeek|极客中国-欢迎来到极客的世界,一个免费开放的程序员编程交流平台!开放,进步,分享!让技术改变生活,让极客改变未来! Welcome to OGeek Q&A Community for programmer and developer-Open, Learning and Share
Click Here to Ask a Question

...