我如何在C＃中添加动画故事板到我的网页资源，然后再打电话了吗？ [英] How can I add a storyboard animation to my page resources in C#, then call it again later?

问题描述

中心页是我的目标网页。在Hubpage.xaml，我有3×3的网格，包含一个矩形，有什么我打电话小区。在HubPage.xaml.cs，特别是在中心页（）构造函数中，我创建每个小区的情节提要：

HubPage is my landing page. On Hubpage.xaml, I have a grid of 3x3, containing a Rectangle, what I'm calling a "cell". In HubPage.xaml.cs, particularly in the HubPage() constructor, I create a storyboard for each cell:

CreateStoryboardForCell("Column0Row0");
CreateStoryboardForCell("Column0Row1");
...
CreateStoryboardForCell("Column2Row2");

我想一个故事板添加到Page.Resources，通常我会做在XAML，但我从C＃尝试它。现在，这里是CreateStoryboardForCell实现：

I want to add a storyboard to the Page.Resources, normally I would do it in XAML, but I am attempting it from C#. Now, here is the CreateStoryboardForCell implementation:

    private void CreateStoryboardForCell(string cellName)
    {
        // Create two DoubleAnimations, one for scaleX and one for scaleY, and set their properties.
        Duration duration = new Duration(TimeSpan.FromSeconds(0.2));
        DoubleAnimation myDoubleAnimation1 = new DoubleAnimation();
        DoubleAnimation myDoubleAnimation2 = new DoubleAnimation();
        myDoubleAnimation1.Duration = duration;
        myDoubleAnimation2.Duration = duration;

        Storyboard sb = new Storyboard();
        sb.Duration = duration;

        sb.Children.Add(myDoubleAnimation1);
        sb.Children.Add(myDoubleAnimation2);

        // Set the targets of the animations
        Storyboard.SetTarget(myDoubleAnimation1, Column0Row0);
        Storyboard.SetTarget(myDoubleAnimation2, Column0Row0);

        // Set the attached properties of ScaleX and ScaleY
        // to be the target properties of the two respective DoubleAnimations
        Storyboard.SetTargetProperty(myDoubleAnimation1, "(UIElement.RenderTransform).(CompositeTransform.ScaleX)");
        Storyboard.SetTargetProperty(myDoubleAnimation2, "(UIElement.RenderTransform).(CompositeTransform.ScaleY)");
        myDoubleAnimation1.To = 15;
        myDoubleAnimation2.To = 22;

        // Make the Storyboard a resource.
        try
        {
            pageRoot.Resources.Add("story" + cellName, sb);
        }
        catch (Exception e)
        {
            Status.Text = "Error adding storyboard resource for cell" + cellName + ": " + e.Message;
        }
    }

pageRoot是Hubpage.xaml：第x页：NAME =pageRoot等添加资源时，我没有得到一个例外，但我看不到的资源，当我设置的断点，所以我认为它加入成功，因为我能看到数增加，并没有异常被抛出。

pageRoot is from Hubpage.xaml: Page x:Name="pageRoot", etc. I do not get an exception when adding the resource, but I cannot see the resource when I set the breakpoint, so I assume it was added successfully, as I can see the count increasing, and no exception was thrown.

移动的，我对每列单元格，在那里我推断的行和列数，并尝试启动添加到页面资源早些时候相应的故事板点击处理程序。这里是code：

Moving on, I have a click handler for each column cell, where I infer the row and column number and try to start up the corresponding storyboard added to the page resource earlier. Here is the code:

    private void Column1_Cell_Click(object sender, RoutedEventArgs e)
    {

        Rectangle rect = sender as Rectangle;
        int x = (int)rect.GetValue(Grid.RowProperty);
        int y = (int)rect.GetValue(Grid.ColumnProperty);
        string storyboardName = "storyColumn" + y + "Row" + x;
        Storyboard storyboard = (Storyboard)FindName(storyboardName);

        storyboard.Begin();
    }

但FindName调用总是返回null故事板。缺少什么我在这里？

but the FindName call always returns a null storyboard. What am I missing here?

推荐答案

我已经写了这个code的你。我希望福利企业

I've written this code for you.I hope benefits to business

下面是code：

   <Grid>       
    <Grid.ColumnDefinitions>
        <ColumnDefinition x:Name="Column0Row0"/>
        <ColumnDefinition x:Name="Column0Row1"/>
        <ColumnDefinition x:Name="Column0Row2"/>
    </Grid.ColumnDefinitions>
    <Grid.RowDefinitions>
        <RowDefinition/>
        <RowDefinition/>
        <RowDefinition/>
    </Grid.RowDefinitions>
    <Rectangle Fill="Pink" x:Name="rectangle" MouseLeftButtonDown="Rectangle_MouseLeftButtonDown"/>
    <Rectangle Grid.Column="1" Grid.Row="1" Fill="Coral" MouseLeftButtonDown="Rectangle_MouseLeftButtonDown"/>
    <Rectangle Grid.Column="2"  Grid.Row="2" Fill="Orange" MouseLeftButtonDown="Rectangle_MouseLeftButtonDown"/>
</Grid>

code背后：

Code Behind :

private void CreateStoryboardForCell(Rectangle target)
    {
        ScaleTransform trans = new ScaleTransform();
        target.RenderTransform = trans;
        DoubleAnimation anim = new DoubleAnimation(1, 2, TimeSpan.FromMilliseconds(1000));
        trans.BeginAnimation(ScaleTransform.ScaleXProperty, anim);
        trans.BeginAnimation(ScaleTransform.ScaleYProperty, anim);

    }

    private void Rectangle_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
    {
        CreateStoryboardForCell((Rectangle)sender);            
    }     

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