如下代码，数据绑定之后 textbox就随之消失。如何才能不消失

如下代码，数据绑定之后 textbox就随之消失。。怎么才能不消失
 <ListBox ItemsSource="{Binding PhoneNumbers}" Height="560" Width="420">
                                <ListBox.ItemTemplate>
                                    <DataTemplate>
                                        <StackPanel>
                                            <TextBlock Text="{Binding PhoneNumber}" FontSize="44"></TextBlock>
                                        </StackPanel>

                                    </DataTemplate>
                                </ListBox.ItemTemplate>
                                
                                <TextBox></TextBox>
                                
                            </ListBox> wp
[解决办法]
不绑定会显示吗？
[解决办法]
把TextBox放到<DataTemplate>这里面呢？