堆叠< T>实现ICollection的,但自ICollection&LT方法; T> [英] Stack<T> implements ICollection, but has methods from ICollection<T>

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问题描述

我试图创建一个基于自定义集合堆栈< T> 。当我看到堆栈< T> [从元数据]在Visual Studio中,充分显示了堆栈< T> 工具的ICollection ,这需要它来实现的ICollection CopyTo从(数组的数组,索引) 的方法,而是,它显示为具有的ICollection< T> CopyTo从(T []数组,索引)方法。有人可以解释为什么是这样的情况?

I'm trying to create a custom collection based on Stack<T>. When I look at Stack<T> [from metadata] in visual studio, it shows that Stack<T> implements ICollection, which would require it to implement ICollection's CopyTo(Array array, index) method, but instead, it is shown as having ICollection<T>'s CopyTo(T[] array, index) method. Can someone explain why this is the case?

我试图创建一个集合,模仿堆栈&LT; T&GT; pretty的巨资。当我实施的ICollection 作为栈做,它要求我使用 CopyTo从(数组的数组,指数)的方法,但我的真正的希望是使用 CopyTo从(T []数组索引)的方法,如堆栈&LT; T&GT; 一样。有没有一种方法来实现这一目标没有实现的ICollection&LT; T&GT;

I'm trying to create a collection that mimics Stack<T> pretty heavily. When I implement ICollection as stack does, it requires me to use the CopyTo(Array array, index) method, but what I really want is to use the CopyTo(T[] array, index) method, like Stack<T> does. Is there a way to achieve this without implementing ICollection<T>?

推荐答案

正如其他人写的,你可以使用显式接口实现,以满足您的非通用接口:

As others have written, you can use explicit interface implementation to satisfy your non-generic interface:

void ICollection.CopyTo(Array array, int arrayIndex)
{
  var arrayOfT = array as T[];
  if (arrayOfT == null)
    throw new InvalidOperationException();
  CopyTo(arrayOfT, arrayIndex); // calls your good generic method
}

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