Silerlight中利用TextBlock滚动显示

<Canvas x:Name="EventMovePanel" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Grid.Row="1"  Margin="5,2">     <Canvas.Clip>         <RectangleGeometry RadiusX="0" RadiusY="0" Rect="0,0, 500,500" />     </Canvas.Clip>     <Canvas.Triggers>         <EventTrigger RoutedEvent="Canvas.Loaded" >             <BeginStoryboard>                 <Storyboard x:Name="animationGymQuality" Storyboard.TargetProperty="(Canvas.Top)" RepeatBehavior="Forever" >                     <DoubleAnimation Storyboard.TargetName="txtGymQuality" From="100" To="0" Duration="0:0:20"  />                 </Storyboard>             </BeginStoryboard>         </EventTrigger>     </Canvas.Triggers>     <TextBlock x:Name="txtGymQuality" HorizontalAlignment="Center" FontFamily="Arial" FontSize="12" Foreground="Orange" Text="" Canvas.Top="50" TextWrapping="NoWrap"/> </Canvas>

 

这里是滚动文字的代码，主要的就是StoryBoard里的属性设置: Storyboard.TargetProperty="(Canvas.Top)" From="100" To="0" Duration="0:0:20" 同理，其他方向如下设置即可： Storyboard.TargetProperty="(Canvas.Top)" From="0" To="100" Duration="0:0:20"   //从上往下滚动 Storyboard.TargetProperty="(Canvas.Left)" From="0" To="100" Duration="0:0:20"   //从左往右滚动 Storyboard.TargetProperty="(Canvas.Left)" From="100" To="0" Duration="0:0:20"   //从右往左滚动

 

滚动内容有所变化时需要改变动画的From 与To

void changeSizeOfQualtiyPanel()        {            txtGymQuality.Width = this.EventMovePanel.ActualWidth;            DoubleAnimation animation = this.animationGymQuality.Children[0] as DoubleAnimation;            if (animation != null)            {                double from = this.EventMovePanel.ActualHeight;                double to = 0 - this.txtGymQuality.ActualHeight;                animation.From = from;                animation.To = to;                animation.Duration = new Duration(TimeSpan.FromSeconds((from - to) / 50));                this.EventMovePanel.Clip = new RectangleGeometry() { Rect = new Rect(new Point(0, 0), new Size(this.EventMovePanel.ActualWidth, this.EventMovePanel.ActualHeight)) };                Canvas.SetTop(txtGymQuality, from);            }        }