为什么我不能在Storyboard中使用Click

Question

我正在尝试在Snapped_detail发生时实现Click事件的更改，但是我似乎无法这样做。 我还如何修改后退按钮的click事件？ 这是我的代码：

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

剩下的就是这个了。

                <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

您可以改为注册Window.Current.SizeChanged事件

Window.Current.SizeChanged += WindowSizeChanged;

并且比在您的WindowSizeChanged函数中将不同的函数分配给button

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