局域网内主机IP扫描 Winform

代码

public partial class Form1 : Form
    {
    
    
        public Form1()
        {
    
    
            InitializeComponent();            
        }

        

        private void button1_Click(object sender, EventArgs e)
        {
    
    
            dataGridView1.Rows.Clear();
            this.toolStripProgressBar1.Value = 0;
            this.toolStripStatusLabel1.Text = "0%";

            IPAddress address;
            if(IPAddress.TryParse(textBox1.Text,out address))
            {
    
    
                Properties.Settings.Default.DefaultIP = textBox1.Text;
                Properties.Settings.Default.Save();
                Thread thd = new Thread
                    (() =>
                Find(address.ToString()));
                thd.IsBackground = true;
                thd.Start();
            }
            else
            {
    
    
                MessageBox.Show("请输入默认网关正确格式:___.___.___.___");
            }
        }

        private void Form1_Load(object sender, EventArgs e)
        {
    
    
            textBox1.Text = Properties.Settings.Default.DefaultIP;
            textBox1.AutoSize = false;
            textBox1.TextAlign = HorizontalAlignment.Center;

            toolStripProgressBar1.Value = 0;
            toolStripProgressBar1.Style = ProgressBarStyle.Blocks;
            toolStripProgressBar1.Maximum = 255;
            toolStripProgressBar1.Minimum = 0;
            toolStripProgressBar1.MarqueeAnimationSpeed = 100;
            toolStripProgressBar1.Step = 1;

            toolStripStatusLabel1.Text = "0%";
        }

        private void Find(string address)
        {
    
    
            string[] n = address.Split('.');
            string baseIP = n[0] + "." + n[1] + "." + n[2] + ".";
            for (int i = 0; i <= 255; i++)
            {
    
    
                Ping ping;
                ping = new Ping();
                string pingIP = baseIP + i.ToString();
                PingReply reply = ping.Send(pingIP, 10);
                if (reply.Status == IPStatus.Success)
                {
    
    
                    Action<string, string> addDelegate = (name, ip) => dataGridView1.Rows.Add(name, ip);
                    if (dataGridView1.InvokeRequired)
                    {
    
    
                        string ip = reply.Address.ToString();
                        string name = Dns.GetHostByAddress(IPAddress.Parse(reply.Address.ToString())).HostName;
                        dataGridView1.Invoke(addDelegate, name, ip);
                    }
                }
                this.Invoke(new Action(
                    () =>
                    {
    
    
                        toolStripProgressBar1.PerformStep();
                        toolStripStatusLabel1.Text = Math.Round((i + 1) * 100.0 / 256, 2).ToString() + "%";
                    }));
            }
        }
    }