c# - WPF 无法聚焦 TextBox

Question

在鼠标事件上，我正在尝试创建 TextBox，将其添加到 Grid，全选并聚焦键盘。但无法让它工作:

private void timeCodeEdit(object sender, MouseEventArgs e)
{
    Grid grid = (Grid) ((Label) sender).Parent;
    TextBox text = new TextBox();
    text.Margin = new Thickness(0, 0, 75, 0);
    text.Text = "aaaa";
    grid.Children.Add(text);
    text.LostFocus += lostFocus;
    Keyboard.Focus(text);
    text.SelectAll();
}

我试过 Keyboard.Focus(text); 和 text.Focus();。如果我这样做:

private void lostFocus(object sender, RoutedEventArgs e)
{
    Keyboard.Focus(sender as TextBox);
    e.Handled = true;
}

我收到 StackOverflowException，导致它在获得焦点后立即失去焦点。

也许有人可以帮我解决这个问题？

Answer 1

我会发布答案:

text.LostKeyboardFocus += Text_LostKeyboardFocus;

和:

private void Text_LostKeyboardFocus(object sender, KeyboardFocusChangedEventArgs e) 
{ 
    var name = ((FrameworkElement)e.NewFocus).Name; 
    Console.Write(name); 
}

帮助我发现我的 ScrollViewer 正在获得焦点，因此 ScrollViewer 的 Focusable="False" 解决了这个问题。