實作文本框内按上下方向鍵時選擇ListBox中某項
private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Up || e.Key == Key.Down)
{
listBox.Focus();
}
}
private void TextBox_PreviewKeyDown(object sender, KeyEventArgs e)
{
if (e.Key == Key.Up || e.Key == Key.Down)
{
listBox.Focus();
}
}