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   源码介绍

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#region Header

// -------------------------------------------------------------------------------------------------------------------- 
//   ┏┓　　　┏┓
// ┏┛┻━━━┛┻┓
// ┃　　　　　　　┃ 　
// ┃　　　━　　　┃
// ┃　┳┛　┗┳　┃
// ┃　　　　　　　┃
// ┃　　　┻　　　┃
// ┃　　　　　　　┃
// ┗━┓　　　┏━┛
//     ┃　　　┃   神兽保佑　　　　　　　　　
//     ┃　　　┃   代码无Bug!
//     ┃　　　┗━━━┓
//     ┃　　　　　　　┣┓
//     ┃　　　　　　　┏┛
//     ┗┓┓┏━┳┓┏┛
//       ┃┫┫　┃┫┫
//       ┗┻┛　┗┻┛
// 
// Copyirght:	Copyright (C) 2014 - Halation All rights reserved
// Solution:	百度云搜索神器
// Project:		百度云搜索神器
// File:		Form1.cs
// Author:		Yuhai
// CreateDate: 	2014-08-22 10:00
// ModifyDate:	2014-08-22 14:34
// --------------------------------------------------------------------------------------------------------------------

#endregion

namespace 百度云搜索神器
{
    using System;
    using System.Diagnostics;
    using System.Net;
    using System.Text;
    using System.Text.RegularExpressions;
    using System.Threading;
    using System.Threading.Tasks;
    using System.Windows.Forms;

    public partial class Form1 : Form
    {
        #region Fields

        private CancellationTokenSource m_cts;

        #endregion

        #region Constructors and Destructors

        public Form1()
        {
            this.InitializeComponent();
        }

        #endregion

        #region Delegates

        private delegate void AddListView(ListViewItem Itmes);

        private delegate void AddprogressBar(int i);

        private delegate void EnableControl(Button control, bool enable);

        private delegate void ShowText(Control control, string Text);

        #endregion

        #region Public Methods and Operators

        public static int GetLength(string str)
        {
            if (str.Length == 0)
            {
                return 0;
            }

            var ascii = new ASCIIEncoding();
            var tempLen = 0;
            var s = ascii.GetBytes(str);
            foreach (byte t in s)
            {
                if (t == 63)
                {
                    tempLen  = 2;
                }
                else
                {
                    tempLen  = 1;
                }
            }

            return tempLen;
        #endregion
        }

        #region Methods

        private static string GetText(string t, string k, string j) //截取指定文本，和易语言的取文本中间差不多
        {
            try //异常捕捉
            {
                var kn = t.IndexOf(k, StringComparison.Ordinal)   k.Length;
                var jn = t.IndexOf(j, kn, StringComparison.Ordinal);
                return t.Substring(kn, jn - kn);
            }
            catch //如果发现未知的错误，比如上面的代码出错了，就执行下面这句代码
            {
                return "发现异常错误！"; //返回错误
            }
        }

        private static int readControlValue(ProgressBar varControl)
        {
            if (varControl.InvokeRequired)
            {
                return (int)varControl.Invoke(new Func<int>(() => readControlValue(varControl)));
            }
            var varText = varControl.Value;
            return varText;
        }

        private void AddListViews(ListViewItem listView)
        {
            if (this.listView1.InvokeRequired)
            {
                var _addListView = new AddListView(this.AddListViews);
                this.listView1.Invoke(_addListView, listView);
            }
            else
            {
                this.listView1.Items.Add(listView);
            }
        }

        private void EnableControls(Button control, bool enable)
        {
            if (control.InvokeRequired)
            {
                var enableControl = new EnableControl(this.EnableControls);
                control.Invoke(enableControl, enable);
            }
            else
            {
                control.Enabled = enable;
            }
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            Environment.Exit(Environment.ExitCode);
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            this.EnableControls(this.btnStop, false);
        }

        private void ProcessBarValue(int i)
        {
            if (this.progressBar1.InvokeRequired)
            {
                var process = new AddprogressBar(this.ProcessBarValue);
                this.progressBar1.Invoke(process, i);
            }
            else
            {
                this.progressBar1.Value = i;
            }
        }

        private void ShowTexts(Control control, string text)
        {
            if (control.InvokeRequired)
            {
                var showText = new ShowText(this.ShowTexts);
                control.Invoke(showText, control, text);
            }
            else
            {
                control.Text = text;
            }
        }

        private void Stop()
        {
            this.m_cts.Cancel();
            this.EnableControls(this.button1, true);
            this.EnableControls(this.btnStop, false);
        }

        private void TestMethod(CancellationToken ct)
        {
            //textBox1.Enabled = false;
            //progressBar1.Value = 0;
            this.ProcessBarValue(0);
            for (var ye = 0; ye != 67;   ye)
            {
                var str = this.geihtml(@"http://www.wangpanwu.com/s/"   this.textBox1.Text   "/List_"   ye   ".html");
                var Data = Regex.Split(str, "searleft", RegexOptions.IgnoreCase);
                for (var i = 1; i < Data.Length; i  )
                {
                    var text = Data[i];
                    var t1 = GetText(text, "target=\"_blank\" title=\"", "\">");
                    var t2 = GetText(text, "<p><span>文件大小：", "<");
                    var t3 = GetText(text, "<span>下载次数：", "<");
                    var t4 = "http://www.wangpanwu.com"   GetText(text, "<a href=\"", "\" target=\"_blank\" title=");
                    t4 = "http://www.wangpanwu.com"
                           GetText(this.geihtml(t4), ";\"><a href=\"", "\" target=\"_blank\"><img src=\"");
                    //listView1.Items.AddRange(new ListViewItem[] { new ListViewItem(new string[] { t1, t2, t3, t4 }) });
                    this.AddListViews(new ListViewItem(new[] { t1, t2, t3, t4 }));

                    if (ct.IsCancellationRequested)
                    {
                        ct.ThrowIfCancellationRequested();
                        break;
                    }
                }
                var value = readControlValue(this.progressBar1);
                if (value == 67)
                {
                    this.Stop();
                    break;
                }
                this.ProcessBarValue(  value);
                // this.progressBar1.Value =   this.progressBar1.Value;
                //this.label2.Text = "用户操作：努力搜索中……剩余项：（"   Convert.ToString(67 - Convert.ToInt32(this.progressBar1.Value))   ")";
                var text2 = "用户操作：努力搜索中……剩余项：（"   Convert.ToString(67 - value)   ")";
                this.ShowTexts(this.label2, text2);

                if (!ct.IsCancellationRequested)
                {
                    continue;
                }
                ct.ThrowIfCancellationRequested();
                break;
            }
            //label2.Text = "用户操作：双击即可打开指定的文件下载地址";
            var text3 = "用户操作：双击即可打开指定的文件下载地址";
            this.ShowTexts(this.label2, text3);
        }

        private void btnStop_Click(object sender, EventArgs e)
        {
            this.Stop();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            this.m_cts = new CancellationTokenSource();

            try
            {
                if (GetLength(this.textBox1.Text) <= 3)
                {
                    this.label2.Text = "用户操作：关键字必须大于2个汉字(4字节）";
                    return;
                }
                this.listView1.Items.Clear();
                Task.Factory.StartNew(
                    () =>
                        {
                            try
                            {
                                this.TestMethod(this.m_cts.Token);
                            }
                            catch (AggregateException ea)
                            {
                                foreach (var ex in ea.InnerExceptions)
                                {
                                    Console.WriteLine(ex);
                                }
                            }
                        },
                    this.m_cts.Token);
                this.EnableControls(this.button1, false);
                this.EnableControls(this.btnStop, true);
            }
            catch (Exception ex)
            {
                Environment.Exit(Environment.ExitCode);
            }
        }

        //线程

        private string geihtml(string url)
        {
            try
            {
                var hl = new WebClient();
                var hltext = hl.DownloadData(url); //取网页源码
                return (Encoding.GetEncoding("UTF-8").GetString(hltext)); //编码转换
            }
            catch (Exception ex)
            {
                return "错误";
            }
        } //取网页源码

        private void listView1_ColumnWidthChanging(object sender, ColumnWidthChangingEventArgs e)
        {
            try
            {
                if (e.ColumnIndex == 3)
                {
                    ColumnHeader header = this.listView1.Columns[e.ColumnIndex];
                    e.NewWidth = this.listView1.Columns[e.ColumnIndex].Width;
                    e.Cancel = true;
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.ToString());
            }
        }

        private void listView1_DoubleClick(object sender, EventArgs e)
        {
            int length = this.listView1.SelectedItems.Count;
            for (int i = 0; i < length; i  )
            {
                Process.Start(this.listView1.SelectedItems[i].SubItems[3].Text);
            }
        }

        #endregion
    }
}