Question

如标题所示,我有一份附有背景的清单箱。我试图从名单箱的条目中获取价值。现行法典如下:

<ListBox.ItemTemplate>
            <DataTemplate>
                <Border BorderBrush="#90361F" BorderThickness="3" CornerRadius="5" Margin="5">

                    <StackPanel Orientation="Vertical" Background="#90361F" Width="488"> 
                                <toolkit:ContextMenuService.ContextMenu>
                        <toolkit:ContextMenu Tag="{Binding .}">
                            <toolkit:MenuItem Click="MenuItemDelete_Click" Header="Delete Timer"/>
                        </toolkit:ContextMenu>
                        </toolkit:ContextMenuService.ContextMenu>
                        <StackPanel Orientation="Vertical" Background="#90361F" Width="488" >
                            <TextBlock Text="{Binding e2name}" Foreground="White" FontSize="25"/>
                            <StackPanel Orientation="Horizontal" Margin="5">
                                <TextBlock Text="{Binding name}" Foreground="White" FontSize="15" Tag="{Binding name}"/>
                                <TextBlock Text="{Binding datetime}" Foreground="White" FontSize="15" HorizontalAlignment="Right"/>
                            </StackPanel>
                        </StackPanel>
                    </StackPanel>

                </Border>
            </DataTemplate>
        </ListBox.ItemTemplate>

    </ListBox>

现在情况简介会点击事件

private void MenuItemDelete_Click(object sender, RoutedEventArgs e)
    {

        var me = ((FrameworkElement)sender).Tag as ListBoxItem;

    }

i m trying to get the value from the binding of name, i m also using a tag to try and pass the data. as you can see from my click event, well it s pretty rubbish! From what i ve read and understand i do need to make use of ((FrameworkElement)sender).Tag but i m not sure on how to init it. thanks

Answer 1

Did you try to move the Tag attribute with relative binding on the MenuItem object instead of ContextMenu one? Using the Tag to achieve your task is a pretty common use.

然后,“Tag=”{Bled }”对受清单BoxItem约束的整批物体的标签具有约束力,因此很可能是您的有活力的<代码>作为清单BoxItem。页: 1 页: 1

Answer 2

In point of view, you have to try with binding with ContextMenu item than the whole context menu.

这就是Tag={Bled}应从Mendu的角度来看,应当添加到每个背景项目。

经修改的Xaml如下。

<ListBox Name="ListBox" Height="500" ItemsSource="{Binding List}">
<ListBox.ItemTemplate>
            <DataTemplate>
                <Border BorderBrush="#90361F" BorderThickness="3" CornerRadius="5" Margin="5">

                    <StackPanel Orientation="Vertical" Background="#90361F" Width="488"> 
                                <toolkit:ContextMenuService.ContextMenu>
                        <toolkit:ContextMenu>
                            <toolkit:MenuItem Click="MenuItemDelete_Click" Header="Delete Timer" Tag="{Binding}"/>
                        </toolkit:ContextMenu>
                        </toolkit:ContextMenuService.ContextMenu>
                        <StackPanel Orientation="Vertical" Background="#90361F" Width="488" >
                            <TextBlock Text="{Binding e2name}" Foreground="White" FontSize="25"/>
                            <StackPanel Orientation="Horizontal" Margin="5">
                                <TextBlock Text="{Binding name}" Foreground="White" FontSize="15" Tag="{Binding name}"/>
                                <TextBlock Text="{Binding datetime}" Foreground="White" FontSize="15" HorizontalAlignment="Right"/>
                            </StackPanel>
                        </StackPanel>
                    </StackPanel>
                </Border>
            </DataTemplate>
        </ListBox.ItemTemplate>
  </ListBox>

还确保“ListBoxItem”是每个项目的箱子项目源。

友情链接