MoveFocus 不会在 TabItem Header 单击事件上触发

Question

DataGrid 位于 Tab1。如果我位于 Tab2 并单击 Tab1 header 程序切换到 Tab1 并且 DataGrid 在正确的位置滚动到视图中，但是除非我再次单击 Tab1 header，否则选定的 Row 不会获得焦点（突出显示）。其余代码触发得很好。

CS

private void Tab1_Clicked(object sender, MouseButtonEventArgs e)
{
    if (dg_address.SelectedIndex > -1)
    {
        dg_address.ScrollIntoView(dg_address.Items[dg_address.SelectedIndex]);
        DataGridRow row = (DataGridRow)dg_address.ItemContainerGenerator.ContainerFromIndex(dg_address.SelectedIndex);
        row.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
    }
}

XAML

<TabControl x:Name="tab_control"
            HorizontalAlignment="Stretch"
            VerticalAlignment="Stretch"
            Background="#FFE5E5E5">

    <TabItem>
        <TabItem.Header>
            <Label Content="Seznam"
                   MouseLeftButtonDown="Tab1_Clicked"/>
        </TabItem.Header>

Answer 1

在这里找到了解决方案：https://social.msdn.microsoft.com/Forums/vstudio/en-US/3baa240a-c687-449e-af77-989ff4d78333/how-to-move-focus-to-a-textbox-in-a-tabcontrol-on-a-button-click?forum=wpf

private void Tab1_Clicked(object sender, MouseButtonEventArgs e)
{
    if (dg_address.SelectedIndex > -1)
    {
        dg_address.ScrollIntoView(dg_address.Items[dg_address.SelectedIndex]);
        Dispatcher.InvokeAsync(() =>
        {
            DataGridRow row = (DataGridRow)dg_address.ItemContainerGenerator.ContainerFromIndex(dg_address.SelectedIndex);
            row.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
        }
        );
    }
}

或

private void Tab1_Clicked(object sender, MouseButtonEventArgs e)
{
    if (dg_address.SelectedIndex > -1)
    {
        dg_address.ScrollIntoView(dg_address.Items[dg_address.SelectedIndex]);
        Dispatcher.BeginInvoke(DispatcherPriority.Background, new Action(() =>
        {
            DataGridRow row = (DataGridRow)dg_address.ItemContainerGenerator.ContainerFromIndex(dg_address.SelectedIndex);
            row.MoveFocus(new TraversalRequest(FocusNavigationDirection.Next));
        }
        ));
    }
}

编辑：优化并删除了代码中的错误。

MoveFocus 不会在 TabItem Header 单击事件上触发

MoveFocus won't trigger on TabItem Header click event

c#

.net

wpf

tabcontrol