PreviewMouseLeftButtonDown未触发 [英] PreviewMouseLeftButtonDown not firing

问题描述

我有一个ListBox，IEnumerable是数据源。当单击ListBoxItem时，我想访问该对象，以便我可以获取一些数据并显示另一个窗口。

这是我的ListBox XAML

 `< ListBox Name =listBox1Margin =0Width =1010Height =275BorderThickness =0BorderBrush ={ x：Null}Cursor =ArrowHorizo​​ntalAlignment =CenterVerticalAlignment =TopSelectionMode =SingleFontFamily =DINScrollViewer.Horizo​​ntalScrollBarVisibility =HiddenFocusable =FalseIsHitTestVisible =FalseIsTextSearchEnabled = False>`
 
< ListBox.ItemContainerStyle> 
< Style TargetType ={x：Type ListBoxItem}> 
< EventSetter Event =PreviewMouseLeftButtonDownHandler =ListBox_MouseLeftButtonDown>< / EventSetter> 
< / Style> 
< /ListBox.ItemContainerStyle> 
< ListBox.ItemTemplate> 
< DataTemplate DataType ={x：Type local：Offer}> 
< StackPanel Margin =0Width =200Height =275Background =BlackName =sp> 
< Image Source ={Binding Image}Width =200Height =131Margin =0>< / Image> 
< TextBlock Padding =5Background =BlackText ={Binding Name}Foreground =WhiteFontFamily =DIN mediumFontWeight =BoldFontSize =16Width =200 Margin =0>< / TextBlock> 
< TextBlock Padding =5,0,5,0Background =BlackText ={Binding Date}Foreground =WhiteFontFamily =DIN mediumFontWeight =BoldFontSize = 14Width =200Margin =0>< / TextBlock> 
< TextBlock Padding =5Background =BlackText ={Binding Description}Foreground =WhiteFontFamily =DIN lightFontSize =16Width =200Margin =0 TextWrapping =WrapWithOverflow>< / TextBlock> 
< / StackPanel> 
< / DataTemplate> 
< /ListBox.ItemTemplate> 
< ListBox.ItemsPanel> 
< ItemsPanelTemplate> 
< VirtualizingStackPanel Background =BlackCanHorizo​​ntallyScroll =TrueCanVerticallyScroll =FalseFlowDirection =LeftToRightMargin =0Orientation =Horizo​​ntalWidth =1010Height =275>< ; / VirtualizingStackPanel> 
< / ItemsPanelTemplate> 
< /ListBox.ItemsPanel> 
< / ListBox>`$ 
  

其他相关信息

  CurrentItems =（from offerCatType in offerRes.OfferCategory 
 where offerCatType.type ==键入
从offerCatType.Offer中的优惠
其中新的DateTime（Convert.ToDateTime（offers.startDate）.Year，
 Convert.ToDateTime（offers.startDate）.Month，1）< = MonthYear&&&Convert.ToDateTime（offers.endDate）> ; = MonthYear 
 select new Offer 
 {
 Name = offers.name，
描述= Offers.description，
 Date = String.Format（{0：dd / MM / yyyy}，Convert.ToDateTime（offers.startDate））+to+ String.Form at（{0：dd / MM / yyyy}，Convert.ToDateTime（offers.endDate）），
 ClickThruUrl = Offers.ChannelInfo.refClickThroughLink，
 ReferenceID = Offers.ChannelInfo.refId，
 Image = Offers.ChannelInfo.refLink 
} 
）; 
 
 
 
 listBox1.ItemsSource = CurrentItems; 
 protected void ListBox_MouseLeftButtonDown（object sender，RoutedEventArgs e）
 {} 
  

是可能我的一些风格可能会吹走这个事件？我今天早些时候工作，然后修理了一些更多的造型项目，然后点击代码停止工作。

解决方案

为列表框设置IsHitTestVisible属性为true而不是false，您将获得鼠标事件。

I have a ListBox, an IEnumerable is the data source. When a ListBoxItem is clicked, I want access to that object so I can grab some data and show another window.

Here is my ListBox XAML

          `<ListBox Name="listBox1" Margin="0" Width="1010" Height="275" BorderThickness="0" BorderBrush="{x:Null}" Cursor="Arrow" HorizontalAlignment="Center" VerticalAlignment="Top" SelectionMode="Single" FontFamily="DIN" ScrollViewer.HorizontalScrollBarVisibility="Hidden" Focusable="False" IsHitTestVisible="False" IsTextSearchEnabled="False" >`

            <ListBox.ItemContainerStyle>
                <Style TargetType="{x:Type ListBoxItem}">
                    <EventSetter Event="PreviewMouseLeftButtonDown" Handler="ListBox_MouseLeftButtonDown"></EventSetter>
                </Style>
            </ListBox.ItemContainerStyle>
            <ListBox.ItemTemplate>
                <DataTemplate DataType="{x:Type local:Offer}">
                    <StackPanel Margin="0" Width="200" Height="275" Background="Black" Name="sp">
                        <Image Source="{Binding Image}" Width="200" Height="131" Margin="0"></Image>
                        <TextBlock Padding="5" Background="Black" Text="{Binding Name}" Foreground="White" FontFamily="DIN medium" FontWeight="Bold"  FontSize="16" Width="200" Margin="0"></TextBlock>
                        <TextBlock Padding="5,0,5,0" Background="Black" Text="{Binding Date}" Foreground="White" FontFamily="DIN medium" FontWeight="Bold" FontSize="14" Width="200" Margin="0"></TextBlock>
                        <TextBlock Padding="5" Background="Black" Text="{Binding Description}" Foreground="White" FontFamily="DIN light" FontSize="16" Width="200" Margin="0"  TextWrapping="WrapWithOverflow"></TextBlock>
                    </StackPanel>
                </DataTemplate>
            </ListBox.ItemTemplate>
            <ListBox.ItemsPanel>
                <ItemsPanelTemplate>
                    <VirtualizingStackPanel Background="Black" CanHorizontallyScroll="True" CanVerticallyScroll="False" FlowDirection="LeftToRight" Margin="0" Orientation="Horizontal" Width="1010" Height="275"></VirtualizingStackPanel>
                </ItemsPanelTemplate>
            </ListBox.ItemsPanel>
        </ListBox>`$

other pertinent info

                CurrentItems = (from offerCatType in offerRes.OfferCategory
                                       where offerCatType.type == Type
                                       from offers in offerCatType.Offer
                                       where new       DateTime(Convert.ToDateTime(offers.startDate).Year,
  Convert.ToDateTime(offers.startDate).Month, 1)  <= MonthYear && Convert.ToDateTime(offers.endDate) >= MonthYear
                                       select new Offer
                                       {
                                           Name = offers.name,
                                           Description = offers.description,
                                           Date = String.Format("{0:dd/MM/yyyy}",       Convert.ToDateTime(offers.startDate)) + " to " + String.Format("{0:dd/MM/yyyy}",   Convert.ToDateTime(offers.endDate)),
                                           ClickThruUrl = offers.ChannelInfo.refClickThroughLink,
                                           ReferenceID = offers.ChannelInfo.refId,
                                           Image = offers.ChannelInfo.refLink
                                       }
                        );



        listBox1.ItemsSource = CurrentItems;
        protected void ListBox_MouseLeftButtonDown(object sender, RoutedEventArgs e)
        {}

Is it possible some of my styling could blow away this event? I had it working earlier today, then was fixing a couple more styling items, then, the click code stopped working.

解决方案

Set the IsHitTestVisible property to true instead of false for the listbox and you will get mouse events.

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