使用C＃析构函数的示例 [英] Sample use of a C# Destructor

问题描述

我正在阅读C＃中的析构函数，但是我很难找到一个体面的用例。

有人可以提供一个使用示例解释？

非常感谢。

$ b

更新

本书中的代码示例实现了Desctuctor和Dispose（）方法，请参阅本书中的这段代码片段。

  class MyClass 
 {
 bool disposed = false; //处置状态
 public void Dispose（）
 {
 Dispose（true）; 
 GC.SuppressFinalize（this）; 
} 
〜MyClass（）
 {
 Dispose（false）; 
 
 protected void Dispose（bool disposing）
 {
 if（dispose == false）
 {
 if（disposing == true）
 {
 //处理托管资源。 Factored Dispose 
 
} 
 //处理非托管资源。 
 
} 
 disposed = true; 
 
 
  

Marko

。 当你直接访问本地资源时，他们使用 - 但现在你通常应该使用 SafeHandle 。

Joe Duffy有一个<一个很好的帖子关于这个，它比我更详细能写自己 - 所以去阅读：）

关于术语的简要说明：ECMA版本的C＃规范将它们称为终结器;微软版本的规范一直将它们称为析构函数，并继续这样做。

I'm reading about destructors in C# but I'm having trouble finding a decent use-case for it.

Could someone provide an example of usage with an explanation?

Much, much appreciated.

Update
The code sample in the book implements both a Desctuctor and a Dispose() method, see this code snippet from the book.

class MyClass
{
    bool disposed = false; // Disposal status
    public void Dispose()
    {
        Dispose(true);
        GC.SuppressFinalize(this);
    }
    ~MyClass()
    {
        Dispose(false);
    }
    protected virtual void Dispose(bool disposing)
    {
        if (disposed == false)
        {
            if (disposing == true)
            {
                // Dispose the managed resources. Factored Dispose

            }
            // Dispose the unmanaged resources.

        }
        disposed = true;
    }
}

Marko

解决方案

Finalizers are very rarely needed now. They used to be required when you had direct access to native resources - but now you should usually be using SafeHandle instead.

Joe Duffy has an excellent post about this which goes into rather more details than I would be able to write myself - so go read it :)

A quick note on terminology: the ECMA version of the C# spec refers to them as finalizers; the Microsoft version of the spec has always referred to them as destructors and continues to do so.

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