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Dear Friends

I am trying to send SMS Using huawei dongle, now i am able to send SMS only When User Select the correct com port number from the combo box which are loaded at the form load event,

Now My Question How Can I make the Combo box Load the only port number which huawei dongle is connected?

This My Code Which I have Done

using System;
using System.Collections.Generic;
using System.Threading;
using System.IO.Ports;
using System.Windows.Forms;
using System.Management;
using System.Management.Instrumentation;

namespace gi
    public partial class Form1 : Form
        public Form1()
        SerialPort s;
        private void button1_Click(object sender, EventArgs e)

            string comport = cboPorts.Text;
        public void GetPort(string comport)
           // if (this.s == null)
                this.s = new SerialPort();
                this.s.PortName = comport;
                this.s.BaudRate = 9600;
                this.s.Parity = Parity.None;
                this.s.DataBits = 8;
                this.s.StopBits = StopBits.One;
                //this.s.Handshake = Handshake.RequestToSend;
                this.s.DtrEnable = true;
                this.s.RtsEnable = true;
                //this.s.RtsEnable = true;
                this.s.NewLine = System.Environment.NewLine;
                this.s.WriteLine("AT" + (char)(13));
                //string tt = s.ReadLine();
               // if(s.ReadLine()!="AT/r/r")
                    this.s.WriteLine("AT+CMGF=1" + (char)(13));
                    this.s.WriteLine("AT+CMGS=\"" + 9916518522 + "\"");
                    this.s.WriteLine(">" + "le" + (char)(26));
                //    MessageBox.Show("Dervice Nt");
        private void Form1_Load(object sender, EventArgs e)
            string[] ports = SerialPort.GetPortNames();

            foreach (string port in ports)


1 solution

instead of selecting manually use for loop & check by sending on every com port & if the com port does not consists the dongle catch it in try catch and do not show a message.

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