Cómo: Buscar un guión gráfico
En el ejemplo siguiente se muestra cómo utilizar el método Seek de Storyboard para saltar a cualquier posición en una animación de guión gráfico.
Ejemplo
A continuación se muestra el marcado XAML del ejemplo.
<Page xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
x:Class="SDKSample.SeekStoryboardExample">
<StackPanel Margin="20" >
<Rectangle Name="myRectangle"
Width="10" Height="20" Fill="#AA3333FF" HorizontalAlignment="Left" >
<Rectangle.Triggers>
<EventTrigger RoutedEvent="Rectangle.Loaded">
<BeginStoryboard Name="myBeginStoryboard">
<Storyboard Name="myStoryboard" Duration="0:0:4">
<DoubleAnimation
Storyboard.TargetName="myRectangle"
Storyboard.TargetProperty="Width"
Duration="0:0:4" From="10" To="500"/>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Rectangle.Triggers>
</Rectangle>
<!-- Use this slider to seek to different points of the Storyboard Duration
(in milliseconds). -->
<Slider Name="SeekSlider" ValueChanged="OnSliderValueChanged" Height="Auto"
Width="500" Minimum="0" Maximum="4000" HorizontalAlignment="Left" />
</StackPanel>
</Page>
A continuación, se muestra el código utilizado con el marcado XAML anterior.
Imports System
Imports System.Media
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media.Animation
Namespace SDKSample
Partial Public Class SeekStoryboardExample
Inherits Page
Private Sub OnSliderValueChanged(ByVal sender As Object, ByVal e As RoutedEventArgs)
Dim sliderValue As Integer = CInt(SeekSlider.Value)
' Use the value of the slider to seek to a duration value of the Storyboard (in milliseconds).
myStoryboard.Seek(myRectangle, New TimeSpan(0, 0, 0, 0, sliderValue), TimeSeekOrigin.BeginTime)
End Sub
End Class
End Namespace
using System;
using System.Media;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media.Animation;
namespace SDKSample
{
public partial class SeekStoryboardExample : Page
{
private void OnSliderValueChanged(object sender, RoutedEventArgs e)
{
int sliderValue = (int)SeekSlider.Value;
// Use the value of the slider to seek to a duration value of the Storyboard (in milliseconds).
myStoryboard.Seek(myRectangle, new TimeSpan(0, 0, 0, 0, sliderValue), TimeSeekOrigin.BeginTime);
}
}
}