I'm working on a messaging application
I have a gsm modem and device usb rs232
I want a private message to your phone from a form that I write
below is my code
but it don't work.
My phone does not receive any messages
namespace WindowsFormsApplication1
{
public partial class Form5 : Form
{
public Form5()
{
InitializeComponent();
}
private void Form5_Load(object sender, EventArgs e)
{
_serialPort = new SerialPort("COM4", 9600, Parity.None, 8, StopBits.One);
//_serialPort.Open();
_response = string.Empty;
_serialPort.RtsEnable = true;
_serialPort.DataReceived += SerialPortDataReceived;
}
private static SerialPort _serialPort;
private string _response;
void SerialPortDataReceived(object sender, SerialDataReceivedEventArgs e)
{
if (e.EventType == SerialData.Chars)
{
_response += _serialPort.ReadLine();
}
}
public bool IsReady()
{
try
{
if (!_serialPort.IsOpen)
_serialPort.Open();
_serialPort.Write("AT\r");
Thread.Sleep(3000);
}
catch
{
return false;
}
return _response.Contains("OK");
}
public static bool SendSms(string phoneNumber, string message)
{
try
{
if (!_serialPort.IsOpen)
_serialPort.Open();
// Send
_serialPort.Write("AT+CMGF=1\r");
_serialPort.Write("AT+CMGS=\"" + phoneNumber + "\"\r\n");
_serialPort.Write(message + "\x1A");
return true;
}
catch
{
return false;
}
}
private void button1_Click(object sender, EventArgs e)
{
SendSms(textBox1 .Text , textBox2 .Text );
}
}
}
thanks a lot
