WPF -当DateTemplate内的TextBox成为焦点时，更改数据模板子属性

<DataTemplate x:Key="MyDataTemplate">
    <TextBox Text="{Binding Name}" />
</DataTemplate>

public class MyDataModel : INotifyPropertyChanged
{
    private bool isTextBoxFocused;

    public bool IsTextBoxFocused
    {
        get { return isTextBoxFocused; }
        set
        {
            if (isTextBoxFocused != value)
            {
                isTextBoxFocused = value;
                OnPropertyChanged(nameof(IsTextBoxFocused));
            }
        }
    }

    // 其他属性和方法...

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
    }
}

<ContentControl Content="{Binding MyDataModel}" ContentTemplate="{StaticResource MyDataTemplate}">
    <ContentControl.Style>
        <Style TargetType="ContentControl">
            <Style.Triggers>
                <DataTrigger Binding="{Binding IsTextBoxFocused}" Value="True">
                    <Setter Property="FocusManager.FocusedElement" Value="{Binding RelativeSource={RelativeSource Self}}" />
                </DataTrigger>
            </Style.Triggers>
        </Style>
    </ContentControl.Style>
</ContentControl>