send sms

using System;
using System.Threading;
using System.ComponentModel;
using System.IO.Ports;

public class SMSCOMMS
{
private SerialPort SMSPort;
private Thread SMSThread;
private Thread ReadThread;
public static bool _Continue = false;
public static bool _ContSMS = false;
private bool _Wait = false;
public static bool _ReadPort = false;
public delegate void SendingEventHandler(bool Done);
public event SendingEventHandler Sending;
public delegate void DataReceivedEventHandler(string Message);
public event DataReceivedEventHandler DataReceived;

public SMSCOMMS(ref string COMMPORT)
{
SMSPort = new SerialPort();
SMSPort.PortName = COMMPORT;
SMSPort.BaudRate = 9600;
SMSPort.Parity = Parity.None;
SMSPort.DataBits = 8;
SMSPort.StopBits = StopBits.One;
SMSPort.Handshake = Handshake.RequestToSend;
SMSPort.DtrEnable = true;
SMSPort.RtsEnable = true;
SMSPort.NewLine = System.Environment.NewLine;
ReadThread = new Thread(
new System.Threading.ThreadStart(ReadPort));
}

public bool SendSMS(string CellNumber, string SMSMessage)
{
string MyMessage = null;
//Check if Message Length <= 160

if (SMSMessage.Length <= 160)
MyMessage = SMSMessage;
else
MyMessage = SMSMessage.Substring(0, 160);
if (IsOpen == true)
{
SMSPort.WriteLine("AT+CMGS=" + CellNumber + "r");
_ContSMS = false;
SMSPort.WriteLine(
MyMessage + System.Environment.NewLine + (char)(26));
_Continue = false;
if (Sending != null)
Sending(false);
}
return false;
}

private void ReadPort()
{
string SerialIn = null;
byte[] RXBuffer = new byte[SMSPort.ReadBufferSize + 1];
string SMSMessage = null;
int Strpos = 0;
string TmpStr = null;
while (SMSPort.IsOpen == true)
{
if ((SMSPort.BytesToRead != 0) & (SMSPort.IsOpen == true))
{
while (SMSPort.BytesToRead != 0)
{
SMSPort.Read(RXBuffer, 0, SMSPort.ReadBufferSize);
SerialIn =
SerialIn + System.Text.Encoding.ASCII.GetString(
RXBuffer);
if (SerialIn.Contains(">") == true)
{
_ContSMS = true;
}
if (SerialIn.Contains("+CMGS:") == true)
{
_Continue = true;
if (Sending != null)
Sending(true);
_Wait = false;
SerialIn = string.Empty;
RXBuffer = new byte[SMSPort.ReadBufferSize + 1];
}
}
if (DataReceived != null)
DataReceived(SerialIn);
SerialIn = string.Empty;
RXBuffer = new byte[SMSPort.ReadBufferSize + 1];
}
}
}

public bool SendSMS(string CellNumber, string SMSMessage)
{
string MyMessage = null;
if (SMSMessage.Length <= 160)
{
MyMessage = SMSMessage;
}
else
{
MyMessage = SMSMessage.Substring(0, 160);
}
if (IsOpen == true)
{
SMSPort.WriteLine("AT+CMGS=" + CellNumber + "r");
_ContSMS = false;
SMSPort.WriteLine(
MyMessage + System.Environment.NewLine + (char)(26));
_Continue = false;
if (Sending != null)
Sending(false);
}
return false;
}

public void Open()
{
if (IsOpen == false)
{
SMSPort.Open();
ReadThread.Start();
}
}

public void Close()
{
if (IsOpen == true)
{
SMSPort.Close();
}
}

}