using System;
using System.Net;
using System.Net.NetworkInformation;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace PingExample
{
    public partial class Form1 : Form
    {
        private Timer _pingTimer;
        private IPAddress _ipAddress;

        public Form1()
        {
            InitializeComponent();
            _pingTimer = new Timer { Interval = 2000 };
            _pingTimer.Tick += Timer_Tick;

        }

        private void UpdateControls()
        {
            IpAddress.Enabled = !_pingTimer.Enabled;
            Start.Enabled = !_pingTimer.Enabled;
            Stop.Enabled = _pingTimer.Enabled;
        }

        private void Start_Click(object sender, EventArgs e)
        {
            _pingTimer.Start();
            _ipAddress = IPAddress.Parse(IpAddress.Text);
            UpdateControls();
        }

        private void Stop_Click(object sender, EventArgs e)
        {
            _pingTimer.Stop();
            UpdateControls();
        }

        private async void Timer_Tick(object sender, EventArgs e)
        {
            await SendPing(_ipAddress, 1000);
        }


        private async Task SendPing(IPAddress txtIP, int timeOut)
        {
            using (Ping pingSender = new Ping())
            {
                byte[] packetData = Encoding.ASCII.GetBytes("................................");
                PingOptions packetOptions = new PingOptions(255, false);
                var result = await pingSender.SendPingAsync(txtIP, timeOut, packetData, packetOptions);
                Status.Text = result.Status.ToString();
            }
        }
    }
}