How to send SMS using android smart phone with data cable ?

public class CommSetting
{
    public static int Comm_Port=0;
    public static Int64 Comm_BaudRate=0;
    public static Int64 Comm_TimeOut=0;
    public static GsmCommMain comm;

    public CommSetting()
    {
        //
        // TODO: Add constructor logic here
        //
    }
}

GsmCommMain comm = new GsmCommMain(port, baudRate, timeout);
try
{
        comm.Open();
        while (!comm.IsConnected())
        {
            Cursor.Current = Cursors.Default;
            if (MessageBox.Show(this, "No phone connected.",
               "Connection setup", MessageBoxButtons.RetryCancel,
                 MessageBoxIcon.Exclamation) == DialogResult.Cancel)
            {
                comm.Close();
                return;
            }
            Cursor.Current = Cursors.WaitCursor;
        }

        // Close Comm port connection (Since it's just for testing
        // connection)
        comm.Close();
}
catch(Exception ex)
{
    MessageBox.Show(this, "Connection error: " + ex.Message,
    "Connection setup", MessageBoxButtons.OK, MessageBoxIcon.Warning);
    return;
}

// display message if connection is a success.
MessageBox.Show(this, "Successfully connected to the phone.",
"Connection setup", MessageBoxButtons.OK, MessageBoxIcon.Information);

private void MessageReceived()
{
    Cursor.Current = Cursors.WaitCursor;
    string storage = GetMessageStorage();
    DecodedShortMessage[] messages = CommSetting.comm.ReadMessages
                   (PhoneMessageStatus.ReceivedUnread, storage);
    foreach(DecodedShortMessage message in messages)
    {
         Output(string.Format("Message status = {0},
     Location =  {1}/{2}",
         StatusToString(message.Status),
         message.Storage, message.Index));
         ShowMessage(message.Data);
         Output("");
    }

    Output(string.Format("{0,9} messages read.",
                messages.Length.ToString()));
    Output("");
}