Enum of long values in C#

Question

Why does this declaration,

public enum ECountry : long
{
    None,
    Canada,
    UnitedStates
}

require a cast for any of its values?

Answer 1

AFAIK, you have got to cast.

The MSDN article says:

"However, an explicit cast is needed to convert from enum type to an integral type" (either int or long)

You can check it out:

Enumeration types (C# reference)