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Vb.net(或C#)中是否有任何函数可以编码UCS2中的字符串？

谢谢

我正在使用AT命令在C#.Net中开发GSM调制解调器(D-Link DWM-156)的应用程序.我在发送Unicode消息时遇到问题(例如用波斯语或阿拉伯语写的消息).这是我的计划的核心:

SerialPort GSMPort = new SerialPort();

GSMPort.PortName = "COM6";
GSMPort.BaudRate = 9600;
GSMPort.Parity = Parity.None;
GSMPort.DataBits = 8;
GSMPort.StopBits = StopBits.One;
GSMPort.Handshake = HandShake.RequestToSend;
GSMPort.DtrEnable = true;
GSMPort.RtsEnable = true;

GSMPort.Open();

GSMPort.Write("AT\r");
Thread.Sleep(1000);
GSMPort.Write("AT+CMGF=1\r");
Thread.Sleep(1000);
GSMPort.Write("AT+CMGS=\"" + destinationNumber + "\"\r\n");
Thread.Sleep(1000);
GSMPort.Write(shortMessage+ "\x1A");

它适用于英文和ASCII字母.我已阅读本文,可以使用AT命令在Hyperterminal中发送Unicode消息:

AT [Enter]
OK
AT+CSCS="UCS2" or AT+CSCS="HEX" [Enter] ---> We have to convert our message to hex 
OK
AT+CMGF=1 [Enter]
OK
AT+CMGS="destinationNumber" [Enter]
> 0633064406270645002006450631062D06280627 ---> The hex format of our message (???? ?????) …