1 <Grid Width="300" Height="460">
2 <Grid.RowDefinitions>
3 <RowDefinition Height="*"/>
4 <RowDefinition Height="60"/>
5 <RowDefinition Height="100"/>
6 </Grid.RowDefinitions>
7 <Grid.Triggers>
8 <EventTrigger SourceName="btnStart" RoutedEvent="Button.Click">
9 <BeginStoryboard x:Name="myImageBStoryboard" >
10 <Storyboard CurrentTimeInvalidated="Storyboard_CurrentTimeInvalidated">
11 <DoubleAnimation Storyboard.TargetName="myImageB" Storyboard.TargetProperty="Opacity" From="1" To="0" Duration="00:00:05">
12
13 </DoubleAnimation>
14 </Storyboard>
15 </BeginStoryboard>
16 </EventTrigger>
17 <EventTrigger SourceName="btnPause" RoutedEvent="Button.Click">
18 <PauseStoryboard BeginStoryboardName="myImageBStoryboard"></PauseStoryboard>
19 </EventTrigger>
20 <EventTrigger SourceName="btnResume" RoutedEvent="Button.Click">
21 <ResumeStoryboard BeginStoryboardName="myImageBStoryboard"></ResumeStoryboard>
22 </EventTrigger>
23 <EventTrigger SourceName="btnStop" RoutedEvent="Button.Click">
24 <StopStoryboard BeginStoryboardName="myImageBStoryboard"></StopStoryboard>
25 </EventTrigger>
26 <EventTrigger SourceName="btnMiddle" RoutedEvent="Button.Click">
27 <SeekStoryboard BeginStoryboardName="myImageBStoryboard" Offset="00:00:02">
28 </SeekStoryboard>
29 </EventTrigger>
30 </Grid.Triggers>
31 <Grid Grid.Row="0" Grid.Column="0" >
32 <Image x:Name="myImageA" Source="Images/A.jpg" Height="300" Width="300" Stretch="Fill"></Image>
33 <Image x:Name="myImageB" Source="Images/B.jpg" Height="300" Width="300" Stretch="Fill" ></Image>
34 </Grid>
35 <StackPanel Grid.Row="1" Grid.Column="0" Orientation="Horizontal">
36 <Button x:Name="btnStart" Content="Start" Width="50" Height="40" Margin="3" ></Button>
37 <Button x:Name="btnPause" Content="Pause" Width="50" Height="40" Margin="3" ></Button>
38 <Button x:Name="btnResume" Content="Resume" Width="50" Height="40" Margin="3" ></Button>
39 <Button x:Name="btnStop" Content="Stop" Width="50" Height="40" Margin="3" ></Button>
40 <Button x:Name="btnMiddle" Content="SeekToMiddle" Width="50" Height="40" Margin="3" ></Button>
41 </StackPanel>
42 <StackPanel Grid.Row="2" Grid.Column="0" Orientation="Vertical">
43 <TextBlock x:Name="myTextBlock" FontSize="13" Foreground="Red"> </TextBlock>
44 <ProgressBar x:Name="myProgressBar" Height="35" Background="White" Width="300" >
45 <ProgressBar.Foreground>
46 <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
47 <GradientStop Color="#FF4DF22F" Offset="0.505" />
48 <GradientStop Color="#FFEFF5F1" Offset="1" />
49 <GradientStop Color="#FFF8F8F8" Offset="0.013" />
50 </LinearGradientBrush>
51 </ProgressBar.Foreground>
52 </ProgressBar>
53 </StackPanel>
54 </Grid>
1 public partial class MainWindow : Window
2 {
3 public MainWindow()
4 {
5 InitializeComponent();
6 }
7
8 private void Storyboard_CurrentTimeInvalidated(object sender, EventArgs e)
9 {
10 Clock storyboardClock = sender as Clock;
11 if (storyboardClock.CurrentProgress != null)
12 {
13 myTextBlock.Text = storyboardClock.CurrentTime.ToString();
14 myProgressBar.Value = (double)storyboardClock.CurrentProgress*100;(注意这儿storyboardClock.CurrentProgres值范围是0至1)
15 System.Diagnostics.Debug.WriteLine(myProgressBar.Value);
16 }
17 else
18 {
19 myProgressBar.Value = 0;
20 myTextBlock.Text = "Stopped";
21 }
22 }
23 }
