谁给说一下串口的事用c#

谁给讲讲串口的问题提供一些资料什么的不胜感激

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    private static UInt16 InitializePort = 0x0101;          //初始化波特率    private static UInt16 SetDeviceNodeNumber = 0x0102;     //发设备号    private static UInt16 ReadDeviceNodeNumber = 0x0103;    //读设备号    private static UInt16 ReadDeviceMode = 0x0104;          //读读卡器型号    private static UInt16 SetBuzzerBeep = 0x0106;           //蜂鸣    private static UInt16 SetLedColor = 0x0107;             //设置红绿灯    private static UInt16 SetReaderWorkingStatus = 0x0108; //保留     private static UInt16 SetAntennaStatus = 0x010c;        //设置天线状态    private static UInt16 MifareRequest = 0x0201;           //请求卡的类型    private static UInt16 MifareAnticollision = 0x0202;     //读卡号    private static UInt16 MifareSelect = 0x0203;            //确认卡号    private static UInt16 MifareHlta = 0x0204;              //停机应答    private static UInt16 MifareAuthentication1 = 0x0206;   //卡片鉴定    private static UInt16 MifareAuthentication2 = 0x0207;   //输入密码    private static UInt16 MifareRead = 0x0208;              //读卡    private static UInt16 MifareWrite = 0x0209;             //写卡    private static UInt16 MifareInitval = 0x020A;           //初始化钱包    private static UInt16 MifareReadBalance = 0x020B;    private static UInt16 MifareDecrement = 0x020C;         //减值    private static UInt16 MifareIncrement = 0x020D;         //加值    private static UInt16 MifareRestore = 0x020E;           //从一个块到缓存    private static UInt16 MifareTransfer = 0x020F;          //从缓存到一个块private static UInt16 MifareUltraLightAnticoll = 0x0212;private static UInt16 MifareUltraLightWrite = 0x0213;
      

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    http://topic.csdn.net/t/20051009/22/4315428.html