c#数据类型的集合类

namespace System {
    [Serializable]
    [System.Runtime.InteropServices.ComVisible(true)]
    public enum TypeCode {
        Empty = 0,          // Null reference
        Object = 1,         // Instance that isn't a value
        DBNull = 2,         // Database null value
        Boolean = 3,        // Boolean
        Char = 4,           // Unicode character
        SByte = 5,          // Signed 8-bit integer
        Byte = 6,           // Unsigned 8-bit integer
        Int16 = 7,          // Signed 16-bit integer
        UInt16 = 8,         // Unsigned 16-bit integer
        Int32 = 9,          // Signed 32-bit integer
        UInt32 = 10,        // Unsigned 32-bit integer
        Int64 = 11,         // Signed 64-bit integer
        UInt64 = 12,        // Unsigned 64-bit integer
        Single = 13,        // IEEE 32-bit float
        Double = 14,        // IEEE 64-bit double
        Decimal = 15,       // Decimal
        DateTime = 16,      // DateTime
        String = 18,        // Unicode character string
    }
}