c# - 枚举类型的值

Question

我只是想知道为什么我得到这个输出:

enum MyEnum
{
    a=1,
    b=2,
    c=3,
    d=3,
    f=d
}
Console.WriteLine(MyEnum.f.ToString());

输出
c

但在单声道中
输出
f

那为什么输出的是c呢？不是吗？编译器如何选择c？如果我这样更改代码:

enum MyEnum
{
    a=1,
    b=2,
    c=3,
    d=3, 
    k=3
}
Console.WriteLine(MyEnum.k.ToString());

输出
c
再来一次!

另一个例子:

enum MyEnum
{
    a=3,
    b=3,
    c=3,      
    d=3,
    f=d,   
}
MessageBox.Show(MyEnum.f.ToString());

输出
c

Answer 1

来自 MSDN:

If multiple enumeration members have the same underlying value and you attempt to retrieve the string representation of an enumeration member's name based on its underlying value, your code should not make any assumptions about which name the method will return.

参见:http://msdn.microsoft.com/en-us/library/a0h36syw.aspx#Y300