using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Net;
using System.Windows.Forms;
using System.Text.RegularExpressions;
using System.Threading;

namespace WindowsFormsApplication1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            textBox1.Text = "www.baidu.com";
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Thread[] thraed = new Thread[5];
            ThreadStart start = new ThreadStart(Download);

            for (int i = 0; i < 5; ++i)
            {
                thraed[i] = new Thread(start);
                thraed[i].Start();
            }

            
        }

        public string[] GetSiteInfo(string uri)
        {
            string[] info = new string[5];

            info[0] = uri;          //保存域名
            info[1] = GetIP(uri);   //保存IP
            info[2] = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss");

            if (!Regex.IsMatch(uri, "http://", RegexOptions.IgnoreCase))
            {
                uri = "http://" + uri;
            }

            double timeStart  = System.Environment.TickCount;   //获取系统开机到现在的时间
            HttpWebRequest hw = (HttpWebRequest)WebRequest.Create(uri);
            try
            {
                WebResponse wr = hw.GetResponse();
                double timeEnd = System.Environment.TickCount;  //获取系统开机到现在的时间
                double dTime = (timeEnd - timeStart) / 1000;    //计算网站的访问速度
                string time = dTime.ToString() + " 秒";
                info[3] = time;
                info[4] = "true";
            }
            catch (Exception e)
            {
                info[3] = e.Message;
                info[4] = "false";
            }

            return info;
        }

        public string GetIP(string hostName)
        {
            IPHostEntry ipHost = Dns.GetHostEntry(hostName);
            return ipHost.AddressList[0].ToString();
        }

        private delegate void input();        
        private void Download()
        {
            while (true)
            {
                Thread.Sleep(100);                            
                textBox2.BeginInvoke(new input(show));
            }
        }

        private void show()
        {          
            string[] info = new string[4];
            info = GetSiteInfo(textBox1.Text.Trim());
            textBox2.AppendText("域名：" + info[0] + "\r\nIP：" + info[1] + "\r\n访问时间：" + info[2] + "\r\n响应速度：" + info[3] + "\r\n\r\n");
        }
    }
}