application d'envoi SMS en C#

bonjour tous le monde je développe une application en c# d'envoi sms par telephone connecte au port usb de pc en utilisant les commandes at voila mon code de la form SMS

Code:

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
 
    using System.IO.Ports;
namespace SMS
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            loadPorts();
        }
        private void loadPorts()
        {
            string[] ports = SerialPort.GetPortNames();
            foreach (string port in ports)
            {
                cboPorts.Items.Add(port);
            }
        }
        private void btnSend_Click(object sender, EventArgs e)
        {
            SmsClass sm = new SmsClass(cboPorts.Text);
            sm.Opens();
            sm.sendSms(txtPhone.Text, txtMessage.Text);
            sm.Closes();
            MessageBox.Show("Message Sent!");
        }
 
        private void cboPorts_SelectedIndexChanged(object sender, EventArgs e)
        {
 
        }
 
        private void txtPhone_TextChanged(object sender, EventArgs e)
        {
 
        }
 
        private void txtMessage_TextChanged(object sender, EventArgs e)
        {
 
        }
 
 
 
 
    }
}

et voila le code de program.cs

Code:

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Windows.Forms;
 
namespace WindowsFormsApplication5
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());
        }
    }
}

j'utilise la class smsclass pour communiquer avec le port et envoyer les commandes at

Code:

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using System;
using System.Collections.Generic;
using System.Text;
using System.Threading;
using System.IO.Ports;
using System.Windows.Forms;
namespace SMS
{
    class SmsClass
    {
        SerialPort serialPort;
        public SmsClass(string comPort)
        {
            this.serialPort = new SerialPort();
            this.serialPort.PortName = comPort;
            this.serialPort.BaudRate = 9600;
            this.serialPort.Parity = Parity.None;
            this.serialPort.DataBits = 8;
            this.serialPort.StopBits = StopBits.One;
            this.serialPort.Handshake = Handshake.RequestToSend;
            this.serialPort.DtrEnable = true;
            this.serialPort.RtsEnable = true;
            this.serialPort.NewLine = System.Environment.NewLine;
        }
        public bool sendSms(string cellNo, string sms)
        {
            string messages = null;
            messages = sms;
            if (this.serialPort.IsOpen == true)
            {
                try
                {
                    this.serialPort.WriteLine("AT" + (char)(13));
                    Thread.Sleep(4);
                    this.serialPort.WriteLine("AT+CMGF=1" + (char)(13));
                    Thread.Sleep(5);
                    this.serialPort.WriteLine("AT+CMGS=\"" + cellNo + "\"");
                    Thread.Sleep(10);
                    this.serialPort.WriteLine(">" + messages + (char)(26));
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Source);
                }
                return true;
            }
            else
                return false;
        }
 
        public void Opens()
        {
            if (this.serialPort.IsOpen == false)
            {
                this.serialPort.Open();
            }
        }
        public void Closes()
        {
            if (this.serialPort.IsOpen == true)
            {
                this.serialPort.Close();
            }
        }
    }
}

mon probleme c'est quand j'execute le programe il ma'affiche une ereur dans le code de program.cs :

Citation:

Error 1 The type or namespace name 'Form1' could not be found (are you missing a using directive or an assembly reference?) D:\Program.cs 18 33 WindowsFormsApplication5

merci de m'aider svp