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如何在右键单击事件上突出显示列表框的项?

right-click listbox silverlight

0

Aymeric · 技术社区 · 15 年前

我不知道我是否是第一个问这个问题的人(我搜索了整个黑板),但我没有找到任何答案。正如标题中所说,每当我右键单击列表框时,我都试图突出显示/选择一个项目。

以下是XAML代码:

<ListBox Grid.Row="1" x:Name="ContactList" Margin="6" ItemsSource="{Binding ''}">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <StackPanel Orientation="Horizontal">
                <Image Source="{Binding Status_Image}" Margin="0,0,3,0" />
                <StackPanel Orientation="Vertical">
                    <TextBlock Height="20" HorizontalAlignment="Left" Text="{Binding Name}" FontWeight="Bold" FontSize="13" Foreground="Black" />
                    <TextBlock Height="20" HorizontalAlignment="Left" Text="{Binding Message}" FontSize="11" Foreground="Gray" />
                </StackPanel>
    <Image Source="{Binding NotifImg}" Margin="8,0,0,0"/>
            </StackPanel>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

我知道如何处理右键单击并在按钮或单个元素上显示上下文菜单,但不在绑定的列表框上。如果你对我应该如何进行有任何建议,请随时告诉我,因为我现在被卡住了。

谢谢你,埃菲斯曼。

2 回复 | 直到 15 年前

1

Aymeric 15 年前

<ListBox Grid.Row="1" x:Name="ContactList"ItemsSource="{Binding ''}" MouseRightButtonDown="ContactList_MouseRightButtonDown" MouseRightButtonUp="ContactList_MouseRightButtonUp">
     <ListBox.ItemTemplate>
         <DataTemplate>
             <StackPanel Orientation="Horizontal" >
                 <TextBlock Height="20" HorizontalAlignment="Left" Text="{Binding Name}" FontWeight="Bold" FontSize="13" Foreground="Black" />
                 <TextBlock Height="20" HorizontalAlignment="Left" Text="{Binding Message}" FontSize="11" Foreground="Gray" />
                 <Image Source="{Binding NotifImg}" Margin="8,0,0,0"/>
             </StackPanel>
         </DataTemplate>
     </ListBox.ItemTemplate>
</ListBox>

    private void ContactList_MouseRightButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
    {
        e.Handled = true;
    }

    private void ContactList_MouseRightButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
    {
        VisualTreeHelper.FindElementsInHostCoordinates(e.GetPosition(null), (sender as ListBox)).OfType<ListBoxItem>().First().IsSelected = true;
    }

2

0

user1735022 12 年前

public class CustomListBoxItem : ListBoxItem
{
    protected override void OnMouseRightButtonDown(MouseButtonEventArgs e)
    {
        OnMouseLeftButtonDown(e);
    }
}

ItemsSource ListBoxItem CustomListBoxItem

public class ItemsToCustomListBoxItemsConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if (value == null) return null;

        return
            from object item in (IEnumerable) value
            select new CustomListBoxItem
                {
                    Content = item
                };
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        throw new InvalidOperationException();
    }
}

<ListBox
    ...
    ItemsSource="{Binding Converter={StaticResource ItemsToCustomListBoxItemsConverter}}"
    ...>