C# 项目列表在捕捉到侧面时消失

下面是我的代码，由于某种原因，当我将窗口捕捉到任意一侧（左侧或右侧）时，会发生一些奇怪的事情，ListView中的内容消失了。我很确定xaml中出现了一些问题，但我不知道是什么：/

<common:LayoutAwarePage
    x:Name="pageRoot"
    x:Class="Jeans.reader"
    DataContext="{Binding DefaultViewModel, RelativeSource={RelativeSource Self}}"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:Jeans"
    xmlns:common="using:Jeans.Common"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Page.Resources>

        <!-- Collection of items displayed by this page -->
        <CollectionViewSource
            x:Name="itemsViewSource"
            Source="{Binding Items}"/>
    </Page.Resources>

    <!--
        This grid acts as a root panel for the page that defines two rows:
        * Row 0 contains the back button and page title
        * Row 1 contains the rest of the page layout
    -->
    <Grid Style="{StaticResource LayoutRootStyle}">
        <Grid.RowDefinitions>
            <RowDefinition Height="140"/>
            <RowDefinition Height="*"/>
        </Grid.RowDefinitions>
        <Grid.ColumnDefinitions>
            <ColumnDefinition x:Name="primaryColumn" Width="610"/>
            <ColumnDefinition Width="*"/>
        </Grid.ColumnDefinitions>

        <!-- Back button and page title -->
        <Grid x:Name="titlePanel">
            <Grid.ColumnDefinitions>
                <ColumnDefinition Width="Auto"/>
                <ColumnDefinition Width="*"/>
            </Grid.ColumnDefinitions>
            <Button
                x:Name="backButton"
                Click="GoBack"
                IsEnabled="{Binding DefaultViewModel.CanGoBack, ElementName=pageRoot}"
                Style="{StaticResource BackButtonStyle}"/>
            <TextBlock x:Name="pageTitle" Grid.Column="1" Text="{StaticResource AppName}" Style="{StaticResource PageHeaderTextStyle}"/>
        </Grid>

        <!-- Vertical scrolling item list -->
        <ListView
            x:Name="itemListView"
            AutomationProperties.AutomationId="ItemsListView"
            AutomationProperties.Name="Items"
            TabIndex="1"
            Grid.Row="1"
            Margin="-10,-10,0,0"
            Padding="120,0,0,60"
            ItemsSource="{Binding Source={StaticResource itemsViewSource}}"
            IsSwipeEnabled="False"
            SelectionChanged="ItemListView_SelectionChanged"
            ItemTemplate="{StaticResource Standard130ItemTemplate}" SelectionMode="None" ItemClick="itemListView_ItemClick" IsItemClickEnabled="True"/>

        <!-- Details for selected item -->
        <ScrollViewer
            x:Name="itemDetail"
            AutomationProperties.AutomationId="ItemDetailScrollViewer"
            Grid.Column="1"
            Grid.RowSpan="2"
            Padding="70,0,120,0"
            DataContext="{Binding SelectedItem, ElementName=itemListView}"
            Style="{StaticResource VerticalScrollViewerStyle}">

            <Grid x:Name="itemDetailGrid" Margin="0,60,0,50">
            <WebView x:Name="detailsWeb"/>

            </Grid>
        </ScrollViewer>

        <VisualStateManager.VisualStateGroups>

            <!-- Visual states reflect the application's view state -->
            <VisualStateGroup x:Name="ApplicationViewStates">
                <VisualState x:Name="FullScreenLandscapeOrWide"/>

                <!-- Filled uses a simpler list format in a narrower column -->
                <VisualState x:Name="FilledOrNarrow">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="primaryColumn" Storyboard.TargetProperty="Width">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="420"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemListView" Storyboard.TargetProperty="ItemTemplate">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource Standard80ItemTemplate}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetail" Storyboard.TargetProperty="Padding">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="60,0,66,0"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>

                <!--
                    The page respects the narrower 100-pixel margin convention for portrait, and the page
                    initially hides details to show only the list of items
                -->
                <VisualState x:Name="FullScreenPortrait">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PortraitBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetail" Storyboard.TargetProperty="Visibility">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemListView" Storyboard.TargetProperty="Padding">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="100,0,90,60"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>

                <!--
                    When an item is selected in portrait the details display requires more extensive changes:
                     * Hide the master list and the column is was in
                     * Move item details down a row to make room for the title
                     * Move the title directly above the details
                     * Adjust margins and padding for details
                 -->
                <VisualState x:Name="FullScreenPortrait_Detail">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource PortraitBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>

                        <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="itemDetailGrid" Storyboard.TargetProperty="Margin">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="0,0,0,60"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetail" Storyboard.TargetProperty="Padding">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="100,0,90,0"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>

                <!--
                    The back button and title have different styles when snapped, and the page
                    initially hides details to show only the list of items
                -->
                <VisualState x:Name="Snapped">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="pageTitle" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedPageHeaderTextStyle}"/>
                        </ObjectAnimationUsingKeyFrames>

                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="primaryColumn" Storyboard.TargetProperty="Width">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="320"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemDetail" Storyboard.TargetProperty="Visibility">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="Collapsed"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemListView" Storyboard.TargetProperty="ItemTemplate">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource Standard80ItemTemplate}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemListView" Storyboard.TargetProperty="Padding">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="20,0,0,0"/>
                        </ObjectAnimationUsingKeyFrames>
                    </Storyboard>
                </VisualState>

                <!--
                    When snapped and an item is selected the details display requires more extensive changes:
                     * Hide the master list and the column is was in
                     * Move item details down a row to make room for the title
                     * Move the title directly above the details
                     * Adjust margins and padding for details
                     * Use a different font for title and subtitle
                     * Adjust margins below subtitle
                 -->
                <VisualState x:Name="Snapped_Detail">
                    <Storyboard>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="backButton" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedBackButtonStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="pageTitle" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource SnappedPageHeaderTextStyle}"/>
                        </ObjectAnimationUsingKeyFrames>

                        <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>
                        <!--<ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemTitle" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource TitleTextStyle}"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemTitle" Storyboard.TargetProperty="Margin">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="0"/>
                        </ObjectAnimationUsingKeyFrames>
                        <ObjectAnimationUsingKeyFrames Storyboard.TargetName="itemSubtitle" Storyboard.TargetProperty="Style">
                            <DiscreteObjectKeyFrame KeyTime="0" Value="{StaticResource CaptionTextStyle}"/>
                        </ObjectAnimationUsingKeyFrames>-->
                    </Storyboard>
                </VisualState>
            </VisualStateGroup>
        </VisualStateManager.VisualStateGroups>
    </Grid></common:LayoutAwarePage>

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您应该尝试在Blend中编辑此文件，它非常适合在UI上工作。 打开相关页面时，选择左上角的设备选项卡，在视图中选择“快照”，如果勾选“启用状态录制”复选框，则可以编辑列表框在快照视图中的外观。项目可能已经为快照视图定义了一些视觉状态

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要进行混合，请右键单击项目并选择“在混合中编辑”

代码转储，要求其他人查找此问题对于此站点来说并不是一个好问题。抱歉：/i真的到了我自己无法解决的地步：/i这就是我不得不发布整个代码转储的原因。我知道这是错的，但我真的没有其他选择了：/回答有点晚了，但这正是我一周前做的：）