HOW TO：使用腳本建立屬性的動畫
更新：2007 年 11 月
本範例說明如何使用 Storyboard，將屬性顯示為動畫。若要使用 Storyboard 將屬性顯示為動畫，請針對要顯示為動畫的每個屬性建立動畫，另外再建立 Storyboard 來包含動畫。
屬性的型別會決定要使用的動畫型別。例如，若要將接受 Double 值的屬性顯示為動畫，請使用 DoubleAnimation。TargetName 和 TargetProperty附加屬性會指定要套用動畫的物件和屬性。
若要在可延伸標記語言 (XAML) 中啟動腳本，請使用 BeginStoryboard 動作和 EventTrigger。當 RoutedEvent 屬性指定的事件發生時，EventTrigger 會開始進行 BeginStoryboard 動作。BeginStoryboard 動作即會啟動 Storyboard。
下列範例會使用 Storyboard 物件，將兩個 Button 控制項顯示為動畫。為了讓第一個按鈕變更大小，會將其 Width 顯示為動畫。為了讓第二個按鈕變更色彩，會使用 SolidColorBrush 的 Color 屬性，設定顯示為動畫之按鈕的 Background。
範例
<!-- StoryboardExample.xaml
Uses storyboards to animate properties. -->
<Page
xmlns="https://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="https://schemas.microsoft.com/winfx/2006/xaml"
WindowTitle="Animate Properties with Storyboards">
<Border Background="White">
<StackPanel Margin="30" HorizontalAlignment="Left" MinWidth="500">
<TextBlock>Storyboard Animation Example</TextBlock>
<!-- The width of this button is animated. -->
<Button Name="myWidthAnimatedButton"
Height="30" Width="200" HorizontalAlignment="Left">
A Button
<Button.Triggers>
<!-- Animates the width of the first button
from 200 to 300. -->
<EventTrigger RoutedEvent="Button.Click">
<BeginStoryboard>
<Storyboard>
<DoubleAnimation Storyboard.TargetName="myWidthAnimatedButton"
Storyboard.TargetProperty="Width"
From="200" To="300" Duration="0:0:3" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button>
<!-- The color of the brush used to paint this button is animated. -->
<Button Height="30" Width="200"
HorizontalAlignment="Left">Another Button
<Button.Background>
<SolidColorBrush x:Name="myAnimatedBrush" Color="Blue" />
</Button.Background>
<Button.Triggers>
<!-- Animates the color of the brush used to paint
the second button from red to blue . -->
<EventTrigger RoutedEvent="Button.Click">
<BeginStoryboard>
<Storyboard>
<ColorAnimation
Storyboard.TargetName="myAnimatedBrush"
Storyboard.TargetProperty="Color"
From="Red" To="Blue" Duration="0:0:7" />
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</Button.Triggers>
</Button>
</StackPanel>
</Border>
</Page>
.gif "注意事項") 注意事項： |
|---|
雖然動畫可以同時將 FrameworkElement 物件 (Control 或 Panel) 以及 Freezable 物件 (Brush 或 Transform) 設為目標，但只有架構項目會有 Name 屬性。若要將名稱指派給 Freezable，使其成為動畫的目標，請使用 x:Name 屬性，如前述範例所示。 |
如果您使用程式碼，則必須為 FrameworkElement 建立 NameScope，並將要顯示為動畫之物件的名稱向該 FrameworkElement 註冊。若要在程式碼中啟動動畫，請使用 BeginStoryboard 動作和 EventTrigger。或者，您也可以使用事件處理常式和 Storyboard 的 Begin 方法。在下列範例中，示範了如何使用 Begin 方法。
Imports System
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Media.Animation
Namespace SDKSample
' Uses a storyboard to animate the properties
' of two buttons.
Public Class StoryboardExample
Inherits Page
Private Dim WithEvents myWidthAnimatedButton As Button
Private Dim WithEvents myColorAnimatedButton As Button
Private Dim myWidthAnimatedButtonStoryboard As Storyboard
Private Dim myColorAnimatedButtonStoryboard As Storyboard
Public Sub New()
' Create a name scope for the page.
NameScope.SetNameScope(Me, New NameScope())
Me.WindowTitle = "Animate Properties using Storyboards"
Dim myStackPanel As New StackPanel()
myStackPanel.MinWidth = 500
myStackPanel.Margin = New Thickness(30)
myStackPanel.HorizontalAlignment = HorizontalAlignment.Left
Dim myTextBlock As New TextBlock()
myTextBlock.Text = "Storyboard Animation Example"
myStackPanel.Children.Add(myTextBlock)
'
' Create and animate the first button.
'
' Create a button.
myWidthAnimatedButton = New Button()
myWidthAnimatedButton.Height = 30
myWidthAnimatedButton.Width = 200
myWidthAnimatedButton.HorizontalAlignment = HorizontalAlignment.Left
myWidthAnimatedButton.Content = "A Button"
' Set the Name of the button so that it can be referred
' to in the storyboard that's created later.
' The ID doesn't have to match the variable name;
' it can be any unique identifier.
myWidthAnimatedButton.Name = "myWidthAnimatedButton"
' Register the name with the page to which the button belongs.
Me.RegisterName(myWidthAnimatedButton.Name, myWidthAnimatedButton)
' Create a DoubleAnimation to animate the width of the button.
Dim myDoubleAnimation As New DoubleAnimation()
myDoubleAnimation.From = 200
myDoubleAnimation.To = 300
myDoubleAnimation.Duration = New Duration(TimeSpan.FromMilliseconds(3000))
' Configure the animation to target the button's Width property.
Storyboard.SetTargetName(myDoubleAnimation, myWidthAnimatedButton.Name)
Storyboard.SetTargetProperty(myDoubleAnimation, New PropertyPath(Button.WidthProperty))
' Create a storyboard to contain the animation.
myWidthAnimatedButtonStoryboard = New Storyboard()
myWidthAnimatedButtonStoryboard.Children.Add(myDoubleAnimation)
myStackPanel.Children.Add(myWidthAnimatedButton)
'
' Create and animate the second button.
'
' Create a second button.
myColorAnimatedButton = New Button()
myColorAnimatedButton.Height = 30
myColorAnimatedButton.Width = 200
myColorAnimatedButton.HorizontalAlignment = HorizontalAlignment.Left
myColorAnimatedButton.Content = "Another Button"
' Create a SolidColorBrush to paint the button's background.
Dim myBackgroundBrush As New SolidColorBrush()
myBackgroundBrush.Color = Colors.Blue
' Because a Brush isn't a FrameworkElement, it doesn't
' have a Name property to set. Instead, you just
' register a name for the SolidColorBrush with
' the page where it's used.
Me.RegisterName("myAnimatedBrush", myBackgroundBrush)
' Use the brush to paint the background of the button.
myColorAnimatedButton.Background = myBackgroundBrush
' Create a ColorAnimation to animate the button's background.
Dim myColorAnimation As New ColorAnimation()
myColorAnimation.From = Colors.Red
myColorAnimation.To = Colors.Blue
myColorAnimation.Duration = New Duration(TimeSpan.FromMilliseconds(7000))
' Configure the animation to target the brush's Color property.
Storyboard.SetTargetName(myColorAnimation, "myAnimatedBrush")
Storyboard.SetTargetProperty(myColorAnimation, New PropertyPath(SolidColorBrush.ColorProperty))
' Create a storyboard to contain the animation.
myColorAnimatedButtonStoryboard = New Storyboard()
myColorAnimatedButtonStoryboard.Children.Add(myColorAnimation)
myStackPanel.Children.Add(myColorAnimatedButton)
Me.Content = myStackPanel
End Sub
' Start the animation when the button is clicked.
Private Sub myWidthAnimatedButton_Loaded(ByVal sender as object, ByVal args as RoutedEventArgs) Handles myWidthAnimatedButton.Click
myWidthAnimatedButtonStoryboard.Begin(myWidthAnimatedButton)
End Sub
' Start the animation when the button is clicked.
Private Sub myColorAnimatedButton_Loaded(ByVal sender as object, ByVal args as RoutedEventArgs) Handles myColorAnimatedButton.Click
myColorAnimatedButtonStoryboard.Begin(myColorAnimatedButton)
End Sub
End Class
End Namespace
using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
using System.Windows.Media.Animation;
namespace Microsoft.Samples.Animation.AnimatingWithStoryboards
{
// Uses a storyboard to animate the properties
// of two buttons.
public class StoryboardExample : Page
{
public StoryboardExample()
{
// Create a name scope for the page.
NameScope.SetNameScope(this, new NameScope());
this.WindowTitle = "Animate Properties using Storyboards";
StackPanel myStackPanel = new StackPanel();
myStackPanel.MinWidth = 500;
myStackPanel.Margin = new Thickness(30);
myStackPanel.HorizontalAlignment = HorizontalAlignment.Left;
TextBlock myTextBlock = new TextBlock();
myTextBlock.Text = "Storyboard Animation Example";
myStackPanel.Children.Add(myTextBlock);
//
// Create and animate the first button.
//
// Create a button.
Button myWidthAnimatedButton = new Button();
myWidthAnimatedButton.Height = 30;
myWidthAnimatedButton.Width = 200;
myWidthAnimatedButton.HorizontalAlignment = HorizontalAlignment.Left;
myWidthAnimatedButton.Content = "A Button";
// Set the Name of the button so that it can be referred
// to in the storyboard that's created later.
// The ID doesn't have to match the variable name;
// it can be any unique identifier.
myWidthAnimatedButton.Name = "myWidthAnimatedButton";
// Register the name with the page to which the button belongs.
this.RegisterName(myWidthAnimatedButton.Name, myWidthAnimatedButton);
// Create a DoubleAnimation to animate the width of the button.
DoubleAnimation myDoubleAnimation = new DoubleAnimation();
myDoubleAnimation.From = 200;
myDoubleAnimation.To = 300;
myDoubleAnimation.Duration = new Duration(TimeSpan.FromMilliseconds(3000));
// Configure the animation to target the button's Width property.
Storyboard.SetTargetName(myDoubleAnimation, myWidthAnimatedButton.Name);
Storyboard.SetTargetProperty(myDoubleAnimation, new PropertyPath(Button.WidthProperty));
// Create a storyboard to contain the animation.
Storyboard myWidthAnimatedButtonStoryboard = new Storyboard();
myWidthAnimatedButtonStoryboard.Children.Add(myDoubleAnimation);
// Animate the button width when it's clicked.
myWidthAnimatedButton.Click += delegate(object sender, RoutedEventArgs args)
{
myWidthAnimatedButtonStoryboard.Begin(myWidthAnimatedButton);
};
myStackPanel.Children.Add(myWidthAnimatedButton);
//
// Create and animate the second button.
//
// Create a second button.
Button myColorAnimatedButton = new Button();
myColorAnimatedButton.Height = 30;
myColorAnimatedButton.Width = 200;
myColorAnimatedButton.HorizontalAlignment = HorizontalAlignment.Left;
myColorAnimatedButton.Content = "Another Button";
// Create a SolidColorBrush to paint the button's background.
SolidColorBrush myBackgroundBrush = new SolidColorBrush();
myBackgroundBrush.Color = Colors.Blue;
// Because a Brush isn't a FrameworkElement, it doesn't
// have a Name property to set. Instead, you just
// register a name for the SolidColorBrush with
// the page where it's used.
this.RegisterName("myAnimatedBrush", myBackgroundBrush);
// Use the brush to paint the background of the button.
myColorAnimatedButton.Background = myBackgroundBrush;
// Create a ColorAnimation to animate the button's background.
ColorAnimation myColorAnimation = new ColorAnimation();
myColorAnimation.From = Colors.Red;
myColorAnimation.To = Colors.Blue;
myColorAnimation.Duration = new Duration(TimeSpan.FromMilliseconds(7000));
// Configure the animation to target the brush's Color property.
Storyboard.SetTargetName(myColorAnimation, "myAnimatedBrush");
Storyboard.SetTargetProperty(myColorAnimation, new PropertyPath(SolidColorBrush.ColorProperty));
// Create a storyboard to contain the animation.
Storyboard myColorAnimatedButtonStoryboard = new Storyboard();
myColorAnimatedButtonStoryboard.Children.Add(myColorAnimation);
// Animate the button background color when it's clicked.
myColorAnimatedButton.Click += delegate(object sender, RoutedEventArgs args)
{
myColorAnimatedButtonStoryboard.Begin(myColorAnimatedButton);
};
myStackPanel.Children.Add(myColorAnimatedButton);
this.Content = myStackPanel;
}
}
}
如需完整範例，請參閱 屬性動畫範例。如需動畫和腳本的詳細資訊，請參閱動畫概觀。
如果您使用程式碼，則要將屬性顯示為動畫的方式，並不限於使用 Storyboard 物件。如需詳細資訊與範例，請參閱 HOW TO：不使用腳本而建立屬性的動畫與 HOW TO：使用 AnimationClock 建立屬性的動畫。