wpf获取模板化控件中的动画。

直接在在模版中用blend添加动画，默认会放在ControlTemplate 的 Resources下面，使用了多种方法都无法正确获取Storyboard。。

<ControlTemplate TargetType="{x:Type local:TWindow}">
                        <ControlTemplate .Resources>
                            <Storyboard x:Key="PromptMessage">
                                <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="promptGrid">
                                    <DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/>
                                    <DiscreteObjectKeyFrame KeyTime="0:0:1.5" Value="{x:Static Visibility.Collapsed}"/>
                                </ObjectAnimationUsingKeyFrames>
                                <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="promptBorder">
                                    <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="1"/>
                                    <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
                                    <EasingDoubleKeyFrame KeyTime="0:0:1.5" Value="0.01"/>
                                </DoubleAnimationUsingKeyFrames>
                            </Storyboard>
                        </ControlTemplate .Resources>
                    <Grid x:Name="PART_MainGrid" Margin="3">
    </Grid>
 </ControlTemplate>

　　

将动画移到Grid的Resources下面，通过Grid来找到动画。代码如下。

<ControlTemplate TargetType="{x:Type local:TWindow}">
                    <Grid x:Name="PART_MainGrid" Margin="3">
                        <Grid.Resources>
                            <Storyboard x:Key="PromptMessage">
                                <ObjectAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Visibility)" Storyboard.TargetName="promptGrid">
                                    <DiscreteObjectKeyFrame KeyTime="0" Value="{x:Static Visibility.Visible}"/>
                                    <DiscreteObjectKeyFrame KeyTime="0:0:1.5" Value="{x:Static Visibility.Collapsed}"/>
                                </ObjectAnimationUsingKeyFrames>
                                <DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="(UIElement.Opacity)" Storyboard.TargetName="promptBorder">
                                    <EasingDoubleKeyFrame KeyTime="0:0:0.5" Value="1"/>
                                    <EasingDoubleKeyFrame KeyTime="0:0:1" Value="1"/>
                                    <EasingDoubleKeyFrame KeyTime="0:0:1.5" Value="0.01"/>
                                </DoubleAnimationUsingKeyFrames>
                            </Storyboard>
                        </Grid.Resources>
</Grid>
 </ControlTemplate>

　　

          Grid  rootGrid = this.GetTemplateChild("PART_MainGrid") as Grid;
            if (rootGrid != null)
            {
              Storyboard PromptMessage = (Storyboard)rootGrid.Resources["PromptMessage"];

            }