如何从ListBox.ItemTemplate DataTemplate内部调用按钮命令，在不选择ListBox项的情况下传递参数？

<ListBox ItemsSource="{Binding Items}">
    <ListBox.ItemTemplate>
        <DataTemplate>
            <Button Content="按钮" Command="{Binding DataContext.MyCommand, RelativeSource={RelativeSource AncestorType={x:Type ListBox}}}"/>
        </DataTemplate>
    </ListBox.ItemTemplate>
</ListBox>

<Button Content="按钮" Command="{Binding DataContext.MyCommand, RelativeSource={RelativeSource AncestorType={x:Type ListBox}}}" CommandParameter="{Binding}"/>

public class MyViewModel
{
    public ICommand MyCommand { get; }

    public MyViewModel()
    {
        MyCommand = new RelayCommand<object>(ExecuteMyCommand);
    }

    private void ExecuteMyCommand(object parameter)
    {
        // 处理按钮点击事件，可以通过parameter获取传递的参数
    }
}