c# - 为什么我不能在 Storyboard 中使用 Click

Question

当 Snapped_detail 发生时，我试图实现 Click 事件的更改，但我似乎不能这样做..？我该如何修改后退按钮的点击事件？这是我的代码：

            <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Click">
                <DiscreteObjectKeyFrame KeyTime="0" Value="snapped_back_click"/>
            </ObjectAnimationUsingKeyFrames>

这就是剩下的部分。

                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="primaryColumn" Storyboard.TargetProperty="Width">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
                </ObjectAnimationUsingKeyFrames>
                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemListView" Storyboard.TargetProperty="Visibility">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                </ObjectAnimationUsingKeyFrames>
                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetail" Storyboard.TargetProperty="(Grid.Row)">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                </ObjectAnimationUsingKeyFrames>
                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetail" Storyboard.TargetProperty="(Grid.RowSpan)">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                </ObjectAnimationUsingKeyFrames>
                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="titlePanel" Storyboard.TargetProperty="(Grid.Column)">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="1"/>
                </ObjectAnimationUsingKeyFrames>
                <!--<ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetailTitlePanel" Storyboard.TargetProperty="(Grid.Row)">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
                </ObjectAnimationUsingKeyFrames>
                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetailTitlePanel" Storyboard.TargetProperty="(Grid.Column)">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
                </ObjectAnimationUsingKeyFrames>-->
                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetail" Storyboard.TargetProperty="Padding">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="20,0,20,0"/>
                </ObjectAnimationUsingKeyFrames>
                <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetailGrid" Storyboard.TargetProperty="Margin">
                    <DiscreteObjectKeyFrame KeyTime="0" Value="0,0,0,60"/>
                </ObjectAnimationUsingKeyFrames>

            </Storyboard>
        </VisualState>

Answer 1

您可以Window.Current.SizeChanged改为注册活动

Window.Current.SizeChanged += WindowSizeChanged;

而不是在您的WindowSizeChanged功能中将不同的功能分配给按钮

    private void WindowSizeChanged(object sender, WindowSizeChangedEventArgs e)
    {
         if(ApplicationView.Value == ApplicationViewState.Snapped)
          {
               backButton.Click += snapped_back_click;
          }
          else
          {
               //something else
          }
    }