停止以編程方式實例化的情節提要

Question

我有一個EventTrigger，它將停止XAML中定義的一些情節提要...但是現在我需要停止以編程方式啟動的情節提要。

<UserControl.Resources>
  <Storyboard x:Key="FadeIn"> ... Fade In Definition </StoryBoard>
  <Storyboard x:Key="FadeOut"> ... Fade In Definition </StoryBoard>
</UserControl>
<UserControl.Triggers>
  <EventTrigger RoutedEvent="Mouse.MouseLeave">
    <BeginStoryboard="{StaticResource FadeIn}" x:Name="FadeIn_BeginStoryboard" />
  </EventTrigger>
  <EventTrigger RoutedEvent="Mouse.MouseEnter">
    <StopStoryboard BeginStoryboardName="FadeIn_BeginStoryboard"/>
    <StopStoryboard BeginStoryboardName="FadeOut_BeginStoryboard"/>
  </EventTrigger>
</UserControl.Triggers>


Storyboard FadeOutStoryboard;
public void StopFadeOut() {
  FadeIn_BeginStoryboard.Storyboard.Stop();
  FadeOut_BeginStoryboard.Storyboard.Stop();
  FadeOutStoryboard = (Storyboard) FindResource("FadeOut");
  FadeOutStoryboard.Name="FadeOutStoryboard";
  FadeOutStoryboard.Begin();
}

當我放置<StopStoryboard BeginStoryboardName =“ FadeOutStoryboard” />時，它告訴我找不到FadeOutStoryboard。 我對WPF編程還很陌生，因此可能會有更好的方法來做到這一點，對此我持開放態度。 由創建我的usercontrol實例的父級調用StopFadeOut（）方法。

Answer 1

將這些行移至構造函數。 您只需要運行一次。

FadeOutStoryboard = (Storyboard)FindResource("FadeOut");
FadeOutStoryboard.Name = "FadeOutStoryboard";

然后在它們之后添加此行。

RegisterName("FadeOutStoryboard", FadeOutStoryboard);