System.TypeCode System.TypeCode定义如下的枚举:发生了什么事的价值17
public enum TypeCode
{
Empty = 0,
Object = 1,
DBNull = 2,
Boolean = 3,
Char = 4,
SByte = 5,
Byte = 6,
Int16 = 7,
UInt16 = 8,
Int32 = 9,
UInt32 = 10,
Int64 = 11,
UInt64 = 12,
Single = 13,
Double = 14,
Decimal = 15,
DateTime = 16,
String = 18,
}
出于好奇,发生了什么类型代码的价值17?它曾经存在过吗?为什么TypeCode.String的值是18而不是17?