将情节提要放在应用程序资源中

我需要在多个地方使用相同的情节提要，因此我将情节提要放在我的应用程序资源中。当我尝试执行情节提要时，唯一的问题是我需要引用要进行动画处理的目标。这是我的故事板：

    <System:String x:Key="target">border2</System:String>
    <Storyboard x:Key="stHeight">
        <DoubleAnimationUsingKeyFrames 
            Storyboard.TargetProperty="(FrameworkElement.Height)" 
            Storyboard.TargetName="{DynamicResource target}"> 
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="90">
                <EasingDoubleKeyFrame.EasingFunction>
                    <CircleEase EasingMode="EaseOut"/>
                </EasingDoubleKeyFrame.EasingFunction>
            </EasingDoubleKeyFrame>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard>

我为不同对象的高度设置动画的方式是通过更改动态资源目标。当故事板位于当前窗口中时，我能够这样做。但是现在我想把它放在应用程序资源中，我不知道如何引用目标属性。

编辑

我之前发布的解决方案效果很好，但有时很难用代码创建复杂的动画。因此，我制定的另一个替代解决方案是使用表达式混合创建故事板。所以我在表达式混合中将随机控件拖到主窗口并创建一个随机动画。假设动画显示为：

         <Storyboard x:Key="Storyboard1">
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" Storyboard.TargetName="grid">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="90"/>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)" Storyboard.TargetName="grid">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="103"/>
            </DoubleAnimationUsingKeyFrames>
            <PointAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransformOrigin)" Storyboard.TargetName="grid">
                <EasingPointKeyFrame KeyTime="0:0:1" Value="0.75,0.5"/>
            </PointAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)" Storyboard.TargetName="grid">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="75"/>
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>

然后我复制该代码并将其粘贴到我的工作窗口中，而不是在应用程序中。XAML。

然后在我的代码中，假设我有一个：

<Border Name="brdBorder" BorderBrush="Silver" BorderThickness="1" Margin="328,104,0,0"  Background="#FFE52E2E" HorizontalAlignment="Left" Width="94" Height="100" VerticalAlignment="Top" >
    <Border.RenderTransform>
        <TransformGroup>
            <ScaleTransform/>
            <SkewTransform/>
            <RotateTransform/>
            <TranslateTransform/>
        </TransformGroup>
    </Border.RenderTransform>
</Border>

出于某种原因，转换组必须在那里才能对对象进行动画处理。无论如何，假设我的工作窗口中有那个边界，我想使用我使用表达式混合创建的相同动画对其进行动画处理。我将在代码中做的是：

Storyboard sb1 = FindResource("Storyboard1") as Storyboard;
foreach (var child in sb1.Children)
{
    Storyboard.SetTargetName(child, brdBorder.Name);
}
sb1.Begin(this);

然后我能够在工作窗口上对该边框进行动画处理。这样做的好处是我能够将相同的动画应用于多个对象(我认为这是创建资源的目的(，当我尝试将情节提要放置在资源字典或 app.xaml 文件中时，问题就出现了。当我这样做时，C# 能够找到情节提要，但情节提要的属性是只读的，因此我收到错误：

Cannot set a property on object 'System.Windows.Media.Animation.DoubleAnimationUsingKeyFrames' because it is in a read-only state.

我想这样做的原因是将相同的动画应用于多个对象。解决方法是使用代码构建基本动画，然后更复杂的动画(如缓动函数等(将其保存为资源。让我告诉你我的意思。

在我的资源文件中，我放置了以下资源：

   <EasingDoubleKeyFrame x:Key="pleaseWork">
        <EasingDoubleKeyFrame.EasingFunction >
            <BackEase EasingMode="EaseOut" Amplitude="1"/>
        </EasingDoubleKeyFrame.EasingFunction>
    </EasingDoubleKeyFrame>

在表达式混合中，您可以构建更复杂的缓动函数。然后，使用隐藏的代码，我将创建一个基本的故事板：

DoubleAnimation animation = new DoubleAnimation();
            animation.To = 336;   // final value
            //animation.From = 0;
            //animation.BeginTime = TimeSpan.FromSeconds(0); 
            animation.Duration = new Duration(TimeSpan.FromSeconds(5)); // how much time should animation last
            // here comes the magic:
            // note that I can bind to EasingDoubleKeyFrame in my resource file in xaml
            animation.EasingFunction = ((EasingDoubleKeyFrame)FindResource("pleaseWork")).EasingFunction; // apply the easing function 
            Storyboard.SetTarget(animation, groupBox1);  // what object will be animated?
            Storyboard.SetTargetProperty(animation, new PropertyPath(FrameworkElement.HeightProperty)); // what property will be animated
            Storyboard sb = new Storyboard();
            sb.Children.Add(animation);
            sb.Begin();

这使我能够在多个对象上使用相同的情节提要。

你不需要

在任何地方引用目标，你可以在本地创建一个，这是动态资源查找的一大特点，例如

<!-- No more target here! -->
<Application.Resources>
    <Storyboard x:Key="SB_Height" x:Shared="False">
        <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(FrameworkElement.Height)"
                Storyboard.TargetName="{DynamicResource AnimationTarget}">
            <EasingDoubleKeyFrame KeyTime="0:0:1" Value="90">
                <EasingDoubleKeyFrame.EasingFunction>
                    <CircleEase EasingMode="EaseOut" />
                </EasingDoubleKeyFrame.EasingFunction>
            </EasingDoubleKeyFrame>
        </DoubleAnimationUsingKeyFrames>
    </Storyboard>
</Application.Resources>

<!-- Somewhere else... -->
<Button Name="mybutton" Content="Test" Height="20">
    <Button.Resources>
        <sys:String x:Key="AnimationTarget">mybutton</sys:String>
    </Button.Resources>
    <Button.Triggers>
        <EventTrigger RoutedEvent="Button.Click">
            <BeginStoryboard Storyboard="{StaticResource SB_Height}"/>
        </EventTrigger>
    </Button.Triggers>
</Button>

终于找到了解决方案

!!!!

如果您还记得我在 app.xaml 文件中放置情节提要时遇到的错误是：

无法在对象"System.Windows.Media.Animation.DoubleAnimationUsingKeyFrames"上设置属性，因为它处于只读状态。

换句话说，我

无法修改故事板的目标属性，我只能将其红色。所以解决方案是更改Storyboard.TargetName="grid" Storyboard.TargetName="{binding}"

让我把所有东西放在一起：

step 1:
// create your custom storyboard with expression blend or xaml: 
// let's say it comes out as:
<Storyboard x:Key="Storyboard1">
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" Storyboard.TargetName="grid">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="90"/>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)" Storyboard.TargetName="grid">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="103"/>
            </DoubleAnimationUsingKeyFrames>
            <PointAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransformOrigin)" Storyboard.TargetName="grid">
                <EasingPointKeyFrame KeyTime="0:0:1" Value="0.75,0.5"/>
            </PointAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)" Storyboard.TargetName="grid">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="75"/>
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>

step 2:
// copy and paste  your storyboard to your app.xaml file or to a 
// resource dictionary (if you paste it in a resource dictionary do not 
// forget to merge the dictionaries so that your code is able to find the 
// storyboard as a resource)
<Application x:Class="FilesPro2._1.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             StartupUri="MainWindow.xaml">
    <Application.Resources>

        <Storyboard x:Key="Storyboard1">
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" Storyboard.TargetName="{Binding}">
                <EasingDoubleK
   ....
   .....
   ...
   etc

step 3

将 Storyboard.TargetName=">

grid" 替换为 Storyboard.TargetName="{Binding}"。情节提要资源不应如下所示：

<Application.Resources>

        <Storyboard x:Key="Storyboard1">
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.X)" Storyboard.TargetName="{Binding}">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="90"/>
            </DoubleAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[3].(TranslateTransform.Y)" Storyboard.TargetName="{Binding}">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="103"/>
            </DoubleAnimationUsingKeyFrames>
            <PointAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransformOrigin)" Storyboard.TargetName="{Binding}">
                <EasingPointKeyFrame KeyTime="0:0:1" Value="0.75,0.5"/>
            </PointAnimationUsingKeyFrames>
            <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.RenderTransform).(TransformGroup.Children)[2].(RotateTransform.Angle)" Storyboard.TargetName="{Binding}">
                <EasingDoubleKeyFrame KeyTime="0:0:1" Value="75"/>
            </DoubleAnimationUsingKeyFrames>
        </Storyboard>

step 4
//create a method to make it easy to run the same animation on multiple objects:
void runStoryboard(string storyboardName, string objectName)
{
    Storyboard sb = FindResource(storyboardName) as Storyboard;
    foreach (var child in sb.Children)            
        Storyboard.SetTargetName(child, objectName);
    sb.Begin(this); // do not forget the this keyword
}

step 5
    // start your animation with the object you wish to animate
            runStoryboard("Storyboard1", brdBorder.Name);

注意重要事项：

请注意，在使用表达式混合创建情节提要时，有时表达式混合会为正在设置动画的控件创建呈现转换组。在这个例子中，我在哪里动画一个边界。为了使该边界具有动画，它需要具有

           <Border.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform/>
                    <RotateTransform/>
                    <TranslateTransform/>
                </TransformGroup>
            </Border.RenderTransform>

换句话说，如果您的动画处理

缩放变换倾斜变换等，则将该渲染变换组放置到您计划进行动画处理的所有对象。

最后，我能够制作动画：

<Border Name="brdBorder"  BorderBrush="Silver" BorderThickness="1" Margin="338,6,0,0" Background="#FFE52E2E" HorizontalAlignment="Left" Width="94" Height="38" VerticalAlignment="Top">
    <Border.RenderTransform>
        <TransformGroup>
            <ScaleTransform/>
            <SkewTransform/>
            <RotateTransform/>
            <TranslateTransform/>
        </TransformGroup>
    </Border.RenderTransform>
</Border>
   //   AND
<Button Name="mybutton" Content="Test" Height="20" Click="mybutton_Click">
    <Button.RenderTransform>
        <TransformGroup>
            <ScaleTransform/>
            <SkewTransform/>
            <RotateTransform/>
            <TranslateTransform/>
        </TransformGroup>
    </Button.RenderTransform>
</Button>

AS:
runStoryboard("Storyboard1", brdBorder.Name);
runStoryboard("Storyboard1", mybutton.Name);

对于

Windows Phone 8.1 应用程序

我

遇到了同样的问题，我添加了许多解决方案来实现这一点。

这是我的 App.xaml 文件

<Application.Resources>
        <ResourceDictionary>
            <Storyboard x:Key="ShowMenuAnimationKey">
                <DoubleAnimation
                            Storyboard.TargetName="{Binding}" //this is important
                            Storyboard.TargetProperty="(Canvas.Left)"
                            From="0" To="400" Duration="0:0:1">
                </DoubleAnimation>
            </Storyboard>
        </ResourceDictionary>
    </Application.Resources>

在我的页面中，我有这样的东西(page.xaml(

<Grid x:Name="ViewPanel" 
                        Canvas.Left="0"
                        Canvas.ZIndex="1">
//Etc ....
</Grid>

现在，将此方法绑定到事件(按钮点击或其他内容(

Page.xaml.cs

private void MenuPanel_OnTap(object sender, GestureEventArgs e)
        {
            Storyboard sb = App.Current.Resources["ShowMenuAnimationKey"] as Storyboard;
            sb.Stop();
            Storyboard.SetTarget(sb, ViewPanel);
            sb.Begin();
        }

我希望这会有所帮助！

编辑

Windows Phone 8.1 应用程序

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