.NET Framework Standard Library Annotated Reference, Volume 1: Base Class Library and Extended Numerics Library

Description

A System.Enum is a distinct type with named constant members. Each enumeration type has a corresponding integral type called the underlying type of the enumeration type. This underlying type is required to be a system-supplied integer type that is large enough to represent all values defined in the enumeration; the field that holds the underlying type must be called value__. A System.Enum declaration is allowed to explicitly declare any integral type other than System.Char as an underlying type. This includes System.Byte, System.SByte, System.Int16, System.Int32, System.Int64, System.UInt16, System.UInt32, and System.UInt64. A System.Enum declaration that does not explicitly declare an underlying type has an underlying type of System.Int32 ...