如何创建对象以提高内存和性能？

Question

我应该如何处理对象创建过程，因为垃圾收集器不会清理C＃中的非托管资源？

1）我通常这样做。 2）然后我想出了以下方法：

1）

public class GeneralPageController : Controller
{
    GeneralPageService generalPageService = new GeneralPageService();
    GeneralPageCategoryService categoryService = new 
        GeneralPageCategoryService();
    MultiMediaCategoryService multiMediaCategoryService = new 
        MultiMediaCategoryService();
}

2）

public class GeneralPageController : Controller
{
    protected GeneralPageService _generalPageService;
    protected GeneralPageCategoryService _categoryService;
    protected MultiMediaCategoryService _multiMediaCategoryService;

    public GeneralPageController()
    {
        _generalPageService = new GeneralPageService();
        _categoryService = new GeneralPageCategoryService();
        _multiMediaCategoryService = new MultiMediaCategoryService();
    }
    public new void Dispose()
    {
        _generalPageService.Dispose();
        _categoryService.Dispose();
        _multiMediaCategoryService.Dispose();
    }
}