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   源码介绍

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using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace A._2
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            this.isError.Visibility = Visibility.Hidden;
        }
        int int_begin;
        int int_end;
        DateTime totalbegin;//计算总时间
        volatile int count = 0;
        private void Scan_Click(object sender, RoutedEventArgs e)
        {
            string str_front = this.front.Text;
            string str_begin = this.begin.Text;
            string str_end = this.end.Text;

            this.info.Items.Clear();
            this.isError.Visibility = Visibility.Hidden;
            if (int.TryParse(str_begin, out int_begin) && int.TryParse(str_end, out int_end))
            {
                if (int_begin > int_end)
                {
                    this.isError.Visibility = Visibility.Visible;
                }


                totalbegin = DateTime.Now;
                for (int i = int_begin; i <= int_end; i  )
                {
                    try
                    {
                        IPAddress ip = IPAddress.Parse(str_front   i);
                        Thread t = new Thread(getInfo);
                        t.Start(ip);
                    }
                    catch
                    {
                        this.isError.Visibility = Visibility.Visible;
                    }
                }
            }
            else
            {
                this.isError.Visibility = Visibility.Visible;
            }
        }

        private void getInfo(object ip)
        {

            DateTime begin = DateTime.Now;
            IPAddress ipAddress = (IPAddress)ip;
            string hostName;
            try
            {
                hostName = Dns.GetHostEntry(ipAddress).HostName;
            }
            catch
            {
                hostName = "(不在线)";
            }

            DateTime end = DateTime.Now;
            TimeSpan ts = end - begin;
            string info_text = string.Format("扫描地址：{0},扫描用时：{1}毫秒，主机DNS名称：{2}", ip.ToString(), ts.TotalMilliseconds, hostName);
            info.Dispatcher.Invoke(() => info.Items.Add(info_text));

            count  ;

            if (count == int_end - int_begin   1)//计算总时间
            {
                DateTime totalEnd = DateTime.Now;
                TimeSpan totalTime = totalEnd - totalbegin;
                string totalTimeInfo = string.Format("扫描总时间是：{0}毫秒", totalTime.TotalMilliseconds);
                info.Dispatcher.Invoke(() => info.Items.Add(totalTimeInfo));
            }

        }
    }
}