重写静态类的最佳实践

发布于 2024-09-02 15:52:53 字数 318 浏览 1 评论 0原文

由于不可能在 C# 中重写静态类，因此如果我想重写一个方法，我通常会定义一个与静态方法的签名匹配的委托，然后按照以下方式修改该方法：

public static void foo(int bar)
{
  if (delegatename!=null)
  {
   delegatename.Invoke(bar);
  }
  else
  {
   //execute previous code as normal
  }
}

我感到一阵内疚，知道这有点乱。

任何人都可以建议一个更简洁的解决方案来解决这个问题（除了重写原始结构）

原文

As it is not possible to override a static class in c#, if i want to override a method I generally define a delegate matching the signature of the static method, then modify the method along the lines of:

public static void foo(int bar)
{
  if (delegatename!=null)
  {
   delegatename.Invoke(bar);
  }
  else
  {
   //execute previous code as normal
  }
}

I feel a twinge of guilt, knowing this is a bit messy.

Can anyone suggest a neater solution to this problem (other than rewriting the original structure)

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

勿忘初心 2024-09-09 15:52:53

您似乎正在使用静态类作为为应用程序中的某些资源提供单个访问点的方式。如果是这种情况，您应该考虑使用单例设计模式的实现。这样做，您可以在非静态类上利用继承。

public abstract class Base { ... }

public class Impl : Base { ... }

public class Singleton : Impl
{ 
    #region Static Members

    static readonly Singleton _instance = new Singleton(); 

    static Singleton() { } 

    static public Singleton Instance 
    { 
        get  { return _instance; } 
    } 

    #endregion Static Members

    #region Instance Members

    private Singleton() { } 

    // Method overrides goes here...

    #endregion Instance Members
}

关于如何在 C# 上实现单例设计模式的更深入讨论可以在实现单例中找到C# 中的模式文章。

It seems that you are using the static class as a way to provide a single access point to some resource in your application. If it is the case, you should consider to use an implementation of Singleton design pattern. Doing it, you could take advantage of use inheritance on your non-static classes.

public abstract class Base { ... }

public class Impl : Base { ... }

public class Singleton : Impl
{ 
    #region Static Members

    static readonly Singleton _instance = new Singleton(); 

    static Singleton() { } 

    static public Singleton Instance 
    { 
        get  { return _instance; } 
    } 

    #endregion Static Members

    #region Instance Members

    private Singleton() { } 

    // Method overrides goes here...

    #endregion Instance Members
}

A deeper discussion on how to implement the singleton design pattern on C# can be found on Implementing the Singleton Pattern in C# article.

回复收藏 0 原文