我的问题是我有三个选项卡控件,每个选项卡控件都有一个列表框,该列表框具有 ListBox 和 ItemContainerStyle 的样式,选项卡内的所有列表框的样式都相同。
其中两个选项卡使用 CollectionViewSource 进行数据绑定。
问题是,一旦我尝试进入选项卡 2,我就会得到一个异常,我似乎无法找到从哪里来(我也厌倦了启用第一次机会异常,但什么也没有)
玩弄它我发现如果我从选项卡二中的 ListBox 中删除 ItemContainerStyle 它不再崩溃。另一种阻止它崩溃的方法是在列表框中没有任何项目。另一种方法是不使用 CollectionViewSource,而是在列表上使用 GetDefaultView() 并绑定到该列表。
这是我用来绑定到列表框的行:
this.FListViewSource = (this.FindResource("FirstCollectionViewSource") as AutoRefreshCollectionViewSource);
this.FListViewSource.Source = this.FirstList;
this.FListView = (this.FListViewSource.View as ListCollectionView);
this.SListViewSource = (this.FindResource("SecondCollectionViewSource") as AutoRefreshCollectionViewSource);
this.SListViewSource.Source = testing;
this.SListView = (this.SListViewSource.View as ListCollectionView);
这是选项卡控件的 XAML:
<TabControl Width="Auto" Height="Auto">
<TabItem Header="tab 1">
<StackPanel Name =first_Panel" >
<ListBox Style="{StaticResource lb_ms}" ItemContainerStyle="{StaticResource black_lb}" Width="160" Name="first_lb"
ItemsSource="{Binding}" DisplayMemberPath="name" MinHeight="400" MaxHeight="500" ButtonBase.Click="lb_Click" Margin="5,0,5,0"/>
</StackPanel>
</TabItem>
<TabItem Header="tab 2">
<StackPanel Name ="second_Panel" DataContext="{Binding Source={StaticResource FirstCollectionViewSource}}" FlowDirection="LeftToRight" Background="#333333">
<ListBox ItemsSource="{Binding}" Style="{StaticResource lb_ms}" ItemContainerStyle="{StaticResource black_lb}" Width="160" Name="second_lb"
DisplayMemberPath="name" MinHeight="400" MaxHeight="500" ButtonBase.Click="lb_Click" Margin="5,0,5,0"/>
</StackPanel>
</TabItem>
<TabItem Header="Media">
</TabItem>
<TabItem Header="Domains">
<StackPanel Name ="third_Panel" DataContext="{Binding Source={StaticResource SecondCollectionViewSource}}" FlowDirection="LeftToRight" Background="#333333">
<ListBox Style="{StaticResource lb_ms}" ItemContainerStyle="{StaticResource black_lb}" Width="160" Name="third_lb"
ItemsSource="{Binding}" DisplayMemberPath="name" MinHeight="400" MaxHeight="400" ButtonBase.Click="lb_Click" Margin="5,0,5,0" SelectionMode="Multiple" />
</StackPanel>
</TabItem>
</TabControl>
这是包含样式的资源目录:
<ResourceDictionary.MergedDictionaries>
<ResourceDictionary Source="Brushes.xaml" />
</ResourceDictionary.MergedDictionaries>
<Style x:Key="black_lb" TargetType="{x:Type ListBoxItem}">
<Setter Property="Foreground" Value="#FFFFFF" />
<Setter Property="FontFamily" Value="Verdana" />
<Setter Property="FontSize" Value="11" />
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="{x:Type ListBoxItem}">
<Canvas Name="can" Width="Auto" Height="25">
<Rectangle Name="filler" Canvas.Top="0" Canvas.Left="0" Width="200" Height="25">
<Rectangle.Fill>
<SolidColorBrush x:Name="fillb" Color="#333333"/>
</Rectangle.Fill>
</Rectangle>
<Path d:LastTangent="0,0" Stroke="{x:Null}" Fill="#FF6E00" HorizontalAlignment="Right" VerticalAlignment="Top" Width="7" Height="7" Canvas.Left="15" Opacity="0" Canvas.Top="6" x:Name="Path" RenderTransformOrigin="0.5,0.5" Stretch="Fill" Data="M601.11544,190.39485 L590.06202,213.0964 613,213">
<Path.RenderTransform>
<TransformGroup>
<RotateTransform Angle="90"/>
</TransformGroup>
</Path.RenderTransform>
</Path>
<StackPanel Panel.ZIndex="1000" Name="ActionsContainer" Visibility="Hidden" Canvas.Right="0" HorizontalAlignment="Right" Orientation="Horizontal">
<Button Name="btn_edit" FontSize="10" Content="Edit" Height="20" Width="Auto"/>
<Button Name="btn_delete" FontSize="10" Content="Delete" Height="20" Width="Auto"/>
</StackPanel>
<ContentPresenter Name="con" Canvas.Top="2" Canvas.Left="10"/>
<!--
<ContentPresenter Name="con" Content="{TemplateBinding ContentControl.Content}" />
<ContentControl Name="DesignerItem"
Canvas.Top="2"
Canvas.Left="10"
/>
-->
</Canvas>
<ControlTemplate.Resources>
<Storyboard x:Key="SelectedStory">
<ColorAnimation Storyboard.TargetName="fillb" Storyboard.TargetProperty="(SolidColorBrush.Color)" From="#333333" To="#111111" Duration="0:0:0.1" />
<DoubleAnimation Storyboard.TargetName="con" Storyboard.TargetProperty="(Canvas.Left)" From="10" To="30" Duration="0:0:0.1" />
<DoubleAnimation Storyboard.TargetName="Path" Storyboard.TargetProperty="(Path.Opacity)" From="0" To="1" Duration="0:0:0.1" />
<DoubleAnimation Storyboard.TargetName="Path" Storyboard.TargetProperty="(Canvas.Left)" From="15" To="10" Duration="0:0:0.2" />
</Storyboard>
<Storyboard x:Key="unSelectedStory">
<ColorAnimation Storyboard.TargetName="fillb" Storyboard.TargetProperty="(SolidColorBrush.Color)" From="#111111" To="#333333" Duration="0:0:0.8" />
<DoubleAnimation Storyboard.TargetName="con" Storyboard.TargetProperty="(Canvas.Left)" From="30" To="10" Duration="0:0:0.3" />
<DoubleAnimation Storyboard.TargetName="Path" Storyboard.TargetProperty="(Path.Opacity)" From="1" To="0" Duration="0:0:0.1" />
<DoubleAnimation Storyboard.TargetName="Path" Storyboard.TargetProperty="(Canvas.Left)" From="10" To="15" Duration="0:0:0.1" />
</Storyboard>
<Storyboard x:Key="CurrentlySlecetedStory">
<ColorAnimation Storyboard.TargetName="fillb" Storyboard.TargetProperty="(SolidColorBrush.Color)" From="#111111" To="#111111" Duration="0:0:0.1" />
<DoubleAnimation Storyboard.TargetName="con" Storyboard.TargetProperty="(Canvas.Left)" From="30" To="30" Duration="0:0:0.1" />
<DoubleAnimation Storyboard.TargetName="Path" Storyboard.TargetProperty="(Path.Opacity)" From="1" To="1" Duration="0:0:0.1" />
<DoubleAnimation Storyboard.TargetName="Path" Storyboard.TargetProperty="(Canvas.Left)" From="10" To="15" Duration="0:0:0.2" />
</Storyboard>
<SolidColorBrush x:Key="fillb" Color="#333333" />
</ControlTemplate.Resources>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="ListBoxItem.IsMouseOver" Value="True" />
<Condition Property="ListBoxItem.IsSelected" Value="True" />
</MultiTrigger.Conditions>
<MultiTrigger.Setters>
<Setter TargetName="ActionsContainer" Property="Visibility" Value="{x:Static Visibility.Visible}"/>
</MultiTrigger.Setters>
</MultiTrigger>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="ListBoxItem.IsMouseOver" Value="True" />
<Condition Property="ListBoxItem.IsSelected" Value="False" />
</MultiTrigger.Conditions>
<MultiTrigger.EnterActions>
<BeginStoryboard Selector.IsSelected="True" Storyboard="{StaticResource SelectedStory}">
</BeginStoryboard>
</MultiTrigger.EnterActions>
<MultiTrigger.ExitActions>
<BeginStoryboard Storyboard="{StaticResource unSelectedStory}">
</BeginStoryboard>
</MultiTrigger.ExitActions>
</MultiTrigger>
<EventTrigger RoutedEvent="ListBoxItem.Selected">
<EventTrigger.Actions>
<BeginStoryboard Name="SelectedItemStory" Storyboard="{StaticResource CurrentlySlecetedStory}">
</BeginStoryboard>
</EventTrigger.Actions>
</EventTrigger>
<EventTrigger RoutedEvent="ListBoxItem.Unselected">
<EventTrigger.Actions>
<StopStoryboard BeginStoryboardName="SelectedItemStory" />
</EventTrigger.Actions>
</EventTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>
<Style x:Key="lb_ms" TargetType="ListBox">
<Setter Property="SnapsToDevicePixels" Value="true"/>
<Setter Property="OverridesDefaultStyle" Value="true"/>
<Setter Property="ScrollViewer.HorizontalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.VerticalScrollBarVisibility" Value="Auto"/>
<Setter Property="ScrollViewer.CanContentScroll" Value="true"/>
<Setter Property="MinWidth" Value="120"/>
<Setter Property="MinHeight" Value="95"/>
<Setter Property="Template">
<Setter.Value>
<ControlTemplate TargetType="ListBox">
<Border
Name="Border"
Background="#333333"
BorderBrush="{StaticResource SolidBorderBrush}"
BorderThickness="1"
CornerRadius="5">
<ScrollViewer
Margin="0"
Focusable="false">
<StackPanel Margin="2" IsItemsHost="True" />
</ScrollViewer>
</Border>
<ControlTemplate.Triggers>
<Trigger Property="IsEnabled" Value="false">
<Setter TargetName="Border" Property="Background"
Value="{StaticResource DisabledBackgroundBrush}" />
<Setter TargetName="Border" Property="BorderBrush"
Value="{StaticResource DisabledBorderBrush}" />
</Trigger>
<Trigger Property="IsGrouping" Value="true">
<Setter Property="ScrollViewer.CanContentScroll" Value="false"/>
</Trigger>
</ControlTemplate.Triggers>
</ControlTemplate>
</Setter.Value>
</Setter>
</Style>