08-网络操作/局域网IP扫描/ScanIP/Form1.cs

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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.Threading;
using System.Net;

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

        #region 实例化类对象及公共变量
        private Thread myThread;
        string StartIPAddress = "";
        string EndIPAddress = "";
        int intStrat =0;                          //开始扫描地址
        int intEnd = 0;                           //终止扫描地址
        string strIP = "";
        string strflag = "";                      //扫描到的IP地址
        #endregion

        private void button1_Click(object sender, EventArgs e)
        {
            try
            {
                if (button1.Text == "开始")
                { 
                    listView1.Items.Clear();            //清空ListView控件中的项
                    textBox1.Enabled = textBox2.Enabled = false;
                    strIP = "";
                    strflag = textBox1.Text;
                    StartIPAddress = textBox1.Text;
                    EndIPAddress = textBox2.Text;
                    //开始扫描地址
                    intStrat = Int32.Parse(StartIPAddress.Substring(StartIPAddress.LastIndexOf(".") + 1));
                    //终止扫描地址
                    intEnd = Int32.Parse(EndIPAddress.Substring(EndIPAddress.LastIndexOf(".") + 1));
                    //指定进度条最大值
                    progressBar1.Minimum = intStrat;
                    //指定进度条最小值
                    progressBar1.Maximum = intEnd;
                    //指定进度条初始值
                    progressBar1.Value = progressBar1.Minimum;
                    timer1.Start();             //开始运行计时器
                    button1.Text = "停止";      //设置按钮文本为停止
                    //使用自定义方法StartScan实例化线程对象
                    myThread = new Thread(new ThreadStart(this.StartScan));
                    myThread.Start();                           //开始运行扫描IP的线程
                }
                else
                {