短信：AT命令出錯？

-1

#pragma once 
using namespace System::IO::Ports; 
using namespace System::Text::RegularExpressions; 
using namespace System::Collections::Generic; 

    ref class SMS 
    { 
    public: 
     SMS(void); 
     void sendMessage(); 

    private: 
     System::IO::Ports::SerialPort ^port; 
    };

而且

#include "StdAfx.h" 
#include "SMS.h" 


SMS::SMS(void) 
{ 
    //Initialize the Serial Port 
    port = gcnew System::IO::Ports::SerialPort(); 
    port->PortName = "COM12"; 
    port->BaudRate = 9600; 
    port->Parity = Parity::None; 
    port->DataBits = 8; 
    port->StopBits = StopBits::One; 
    port->Handshake = Handshake::RequestToSend; 
    port->DtrEnable = true; 
    port->RtsEnable = true; 
    port->NewLine = System::Environment::NewLine; 

    if(!port->IsOpen) 
    { 
     port->Open(); 
    } 

    //Set message format 
    port->WriteLine("AT+CMGF=1"); 

    //Turn off echo 
    port->WriteLine("ATE0"); 

    //Set memory configurations 
    port->WriteLine("AT+CPMS=\"ME\",\"ME\",\"ME\""); 





} 


//This method will send the SMS 

void SMS::sendMessage() 
{ 
    if(!port->IsOpen) 
    { 
     port->Open(); 
    } 

    port->WriteLine("AT+CMGS=\"012121212\""); 
    port->WriteLine("Test Message From C#"); 
    port->WriteLine(System::Convert::ToString((char)(26))); 

    port->Close(); 


}

我想通過訪問加密狗發送短信cpp文件。端口是正確的，加密狗也很好，因爲它在幾個小時前響應了我朋友的密碼。我在這裏做錯了什麼？我用C++/CLI做了什麼不正確的事嗎？ AT命令？請幫忙！

來源

2013-07-14 Yohan Weerasinghe