c# - 实现 IEnumerable<T> 和 IEnumerable.GetEnumerator() 不能公开，为什么？

Question

To implement an interface member, the corresponding member of the implementing class must be public. source: Interfaces (C# Programming Guide)

我知道如果它是私有(private)的，它就可以工作，但我想知道为什么它不能公开？

Answer 1

当显式实现时，默认情况下接口(interface)方法是公共(public)的，这就是您不能使用访问修饰符的原因。

来自 msdn.com 的引述:

When a member is explicitly implemented, it cannot be accessed through a class instance, but only through an instance of the interface (which is public by default)

来源:https://msdn.microsoft.com/en-us/library/aa288461%28v=vs.71%29.aspx

附言 隐式和显式实现之间的区别:

interface MyInterface
{
   void MyMethod();
}

class A : MyInterface  // Implicit implementation
{
   public void MyMethod () { ... }
}

class B: MyInterface   // Explicit implementation
{
   void MyInterface.MyMethod () { ... }
}