选择子项后会触发 WPF TreeviewItem 父项选定事件吗？

我有一个标准的 WPF 树视图项目，其中包含许多子项。以编程方式创建树时，我将选定的事件处理程序添加到父项和子项。我发现，当子项选择事件被触发并被处理后，父项事件就会被触发。问题是我根据所选项目填充数据网格。因此，每次选择子项目后，数据网格都会重置为父项目选择。

请有人解释一下这个项目是否正常或者我是否做错了什么以及如何修复它。

如果您需要更多信息，请告诉我。

连接事件处理程序：

//parent
TreeViewItem tvi = new TreeViewItem();

                    tvi.Header = str;

                    tvi.Selected += CoreSupplierSelected

//child
TreeViewItem tvi = new TreeViewItem();
                            tvi.Header = str;
                            tvi.Tag = resinSystems.Values[i];
                            tvi.Selected += CoreResinSystemSelected;

处理程序：

private void CoreSupplierSelected(object sender, RoutedEventArgs e)
    {
        TreeViewItem item = e.OriginalSource as TreeViewItem;
        MaterialSelectionData thicknessData = editInterface.GetCoreThicknessData(new List<object>() { item.Tag }, null);
        List<string> columnNames = thicknessData.DisplayFieldTitles;
        columnNames.Insert(0,"");
        DataTable dt = GUICommon.DatableConverter.ToDataTable(thicknessData.DisplayData, columnNames);
        dtgCores.ItemsSource = dt.AsDataView();
        dtgCores.Columns[0].Visibility = System.Windows.Visibility.Collapsed;
    }

    private void CoreResinSystemSelected(object sender, RoutedEventArgs e)
    {

        TreeViewItem item = e.OriginalSource as TreeViewItem;
        GX3MaterialSelectionData thicknessData = editInterface.GetCoreThicknessData(new List<object>() { ((TreeViewItem)item.Parent).Tag }, new List<object>() { item.Tag });
        List<string> columnNames = thicknessData.DisplayFieldTitles;
        columnNames.Insert(0, "");
        DataTable dt = GUICommon.DatableConverter.ToDataTable(thicknessData.DisplayData, columnNames);
        dtgCores.ItemsSource = dt.AsDataView();
        e.Handled = true;
        dtgCores.Columns[0].Visibility = System.Windows.Visibility.Collapsed;


    }

This has to be something with your code. I'm using a TreeView right now and child selection doesn't trigger parent selection for me. Can you post more of your code? Perhaps I can spot the issue.

我纠正了。在仔细查看我的代码并运行一些测试后，这似乎是控件的正常行为。如果您不希望选择冒泡，那么您应该设置Handled价值true of the RoutedEventArgs范围。

EDIT:

这是我使用的 XAML：

<TreeView Width="200" Height="300">
    <TreeViewItem Header="Parent" Selected="Parent_Selected">
        <TreeViewItem Header="Child" Selected="Child_Selected" />
    </TreeViewItem>
    <TreeViewItem Header="Parent" Selected="Parent_Selected">
        <TreeViewItem Header="Child" Selected="Child_Selected" />
    </TreeViewItem>
</TreeView>

和代码：

private void Parent_Selected(object sender, RoutedEventArgs e)
{
    bool test = false;
}

private void Child_Selected(object sender, RoutedEventArgs e)
{
    bool test = false;
    // e.Handled = true;
}

If the e.Handled = true然后对声明进行评论Parent_Selected will当选择子对象时触发。