自己用C#开发的EMAIL地址抓取程序。

源代码：
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Net;
using System.Text;
namespace GetEmail
{
 /// <summary>
 /// Form1 的摘要说明。
 /// </summary>
 public class Form1 : System.Windows.Forms.Form
 {
  private System.Windows.Forms.GroupBox groupBox1;
  private System.Windows.Forms.Label label1;
  private System.Windows.Forms.Label label2;
  private System.Windows.Forms.Label label3;
  private System.Windows.Forms.Label label4;
  private System.Windows.Forms.ListBox listUrl;
  private System.Windows.Forms.TextBox startUrl;
  private System.Windows.Forms.TextBox endUrl;
  private System.Windows.Forms.TextBox startID;
  private System.Windows.Forms.TextBox endID;
  private System.Windows.Forms.Button buttonUrl;
  private System.Windows.Forms.Label label5;
  private System.Windows.Forms.GroupBox GetEmail;
  private System.Windows.Forms.ListBox listEmail;
  private System.Windows.Forms.Button button1;
  private System.Windows.Forms.Button button2;
  private System.Windows.Forms.Button button3;
  private System.Windows.Forms.Button button4;
  private System.Windows.Forms.Button button5;
  private System.Windows.Forms.Label labelCue;
  private System.Windows.Forms.Button button6;
  private System.Windows.Forms.Button button7;
  private System.Windows.Forms.Button button8;
  /// <summary>
  /// 必需的设计器变量。
  /// </summary>
  private System.ComponentModel.Container components = null;
  public Form1()
  {
   //
   // Windows 窗体设计器支持所必需的
   //
   InitializeComponent();
   //
   // TODO: 在 InitializeComponent 调用后添加任何构造函数代码
   //
  }
  /// <summary>
  /// 清理所有正在使用的资源。
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null)
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }
  #region Windows 窗体设计器生成的代码
  /// <summary>
  /// 设计器支持所需的方法 - 不要使用代码编辑器修改
  /// 此方法的内容。
  /// </summary>
  private void InitializeComponent()
  {
   System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
   this.listUrl = new System.Windows.Forms.ListBox();
   this.groupBox1 = new System.Windows.Forms.GroupBox();
   this.button7 = new System.Windows.Forms.Button();
   this.button6 = new System.Windows.Forms.Button();
   this.buttonUrl = new System.Windows.Forms.Button();
   this.endID = new System.Windows.Forms.TextBox();
   this.label4 = new System.Windows.Forms.Label();
   this.startID = new System.Windows.Forms.TextBox();
   this.label3 = new System.Windows.Forms.Label();
   this.endUrl = new System.Windows.Forms.TextBox();
   this.label2 = new System.Windows.Forms.Label();
   this.startUrl = new System.Windows.Forms.TextBox();
   this.label1 = new System.Windows.Forms.Label();
   this.label5 = new System.Windows.Forms.Label();
   this.labelCue = new System.Windows.Forms.Label();
   this.GetEmail = new System.Windows.Forms.GroupBox();
   this.button8 = new System.Windows.Forms.Button();
   this.button5 = new System.Windows.Forms.Button();
   this.button4 = new System.Windows.Forms.Button();
   this.button3 = new System.Windows.Forms.Button();
   this.button2 = new System.Windows.Forms.Button();
   this.button1 = new System.Windows.Forms.Button();
   this.listEmail = new System.Windows.Forms.ListBox();
   this.groupBox1.SuspendLayout();
   this.GetEmail.SuspendLayout();
   this.SuspendLayout();
   //
   // listUrl
   //
   this.listUrl.ItemHeight = 12;
   this.listUrl.Location = new System.Drawing.Point(8, 52);
   this.listUrl.Name = "listUrl";
   this.listUrl.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended;
   this.listUrl.Size = new System.Drawing.Size(760, 196);
   this.listUrl.TabIndex = 0;
   //
   // groupBox1
   //
   this.groupBox1.BackColor = System.Drawing.Color.Transparent;
   this.groupBox1.Controls.Add(this.button7);
   this.groupBox1.Controls.Add(this.button6);
   this.groupBox1.Controls.Add(this.buttonUrl);
   this.groupBox1.Controls.Add(this.endID);
   this.groupBox1.Controls.Add(this.label4);
   this.groupBox1.Controls.Add(this.startID);
   this.groupBox1.Controls.Add(this.label3);
   this.groupBox1.Controls.Add(this.endUrl);
   this.groupBox1.Controls.Add(this.label2);
   this.groupBox1.Controls.Add(this.startUrl);
   this.groupBox1.Controls.Add(this.label1);
   this.groupBox1.Controls.Add(this.listUrl);
   this.groupBox1.Location = new System.Drawing.Point(8, 8);
   this.groupBox1.Name = "groupBox1";
   this.groupBox1.Size = new System.Drawing.Size(776, 280);
   this.groupBox1.TabIndex = 1;
   this.groupBox1.TabStop = false;
   this.groupBox1.Text = "生成抓捕网址";
   //
   // button7
   //
   this.button7.Location = new System.Drawing.Point(604, 252);
   this.button7.Name = "button7";
   this.button7.Size = new System.Drawing.Size(80, 23);
   this.button7.TabIndex = 10;
   this.button7.Text = "删除选定项";
   this.button7.Click += new System.EventHandler(this.button7_Click);
   //
   // button6
   //
   this.button6.Location = new System.Drawing.Point(692, 252);
   this.button6.Name = "button6";
   this.button6.TabIndex = 9;
   this.button6.Text = "全部清除";
   this.button6.Click += new System.EventHandler(this.button6_Click);
   //
   // buttonUrl
   //
   this.buttonUrl.Location = new System.Drawing.Point(676, 24);
   this.buttonUrl.Name = "buttonUrl";
   this.buttonUrl.Size = new System.Drawing.Size(88, 23);
   this.buttonUrl.TabIndex = 8;
   this.buttonUrl.Text = "生成网址";
   this.buttonUrl.Click += new System.EventHandler(this.buttonUrl_Click);
   //
   // endID
   //
   this.endID.Location = new System.Drawing.Point(384, 24);
   this.endID.Name = "endID";
   this.endID.Size = new System.Drawing.Size(36, 21);
   this.endID.TabIndex = 5;
   this.endID.Text = "";
   //
   // label4
   //
   this.label4.Location = new System.Drawing.Point(336, 28);
   this.label4.Name = "label4";
   this.label4.Size = new System.Drawing.Size(56, 23);
   this.label4.TabIndex = 7;
   this.label4.Text = "结束ID：";
   //
   // startID
   //
   this.startID.Location = new System.Drawing.Point(292, 24);
   this.startID.Name = "startID";
   this.startID.Size = new System.Drawing.Size(36, 21);

4000
   this.startID.TabIndex = 4;
   this.startID.Text = "";
   //
   // label3
   //
   this.label3.Location = new System.Drawing.Point(236, 28);
   this.label3.Name = "label3";
   this.label3.Size = new System.Drawing.Size(56, 23);
   this.label3.TabIndex = 6;
   this.label3.Text = "开始ID：";
   //
   // endUrl
   //
   this.endUrl.Location = new System.Drawing.Point(488, 24);
   this.endUrl.Name = "endUrl";
   this.endUrl.Size = new System.Drawing.Size(172, 21);
   this.endUrl.TabIndex = 1;
   this.endUrl.Text = "";
   //
   // label2
   //
   this.label2.Location = new System.Drawing.Point(424, 28);
   this.label2.Name = "label2";
   this.label2.Size = new System.Drawing.Size(72, 23);
   this.label2.TabIndex = 3;
   this.label2.Text = "结束部分：";
   //
   // startUrl
   //
   this.startUrl.Location = new System.Drawing.Point(72, 24);
   this.startUrl.Name = "startUrl";
   this.startUrl.Size = new System.Drawing.Size(160, 21);
   this.startUrl.TabIndex = 0;
   this.startUrl.Text = "";
   //
   // label1
   //
   this.label1.Location = new System.Drawing.Point(8, 28);
   this.label1.Name = "label1";
   this.label1.Size = new System.Drawing.Size(72, 23);
   this.label1.TabIndex = 2;
   this.label1.Text = "开始部分：";
   //
   // label5
   //
   this.label5.Location = new System.Drawing.Point(8, 552);
   this.label5.Name = "label5";
   this.label5.Size = new System.Drawing.Size(44, 16);
   this.label5.TabIndex = 2;
   this.label5.Text = "提示：";
   //
   // labelCue
   //
   this.labelCue.Location = new System.Drawing.Point(56, 552);
   this.labelCue.Name = "labelCue";
   this.labelCue.Size = new System.Drawing.Size(728, 16);
   this.labelCue.TabIndex = 3;
   //
   // GetEmail
   //
   this.GetEmail.Controls.Add(this.button8);
   this.GetEmail.Controls.Add(this.button5);
   this.GetEmail.Controls.Add(this.button4);
   this.GetEmail.Controls.Add(this.button3);
   this.GetEmail.Controls.Add(this.button2);
   this.GetEmail.Controls.Add(this.button1);
   this.GetEmail.Controls.Add(this.listEmail);
   this.GetEmail.Location = new System.Drawing.Point(8, 296);
   this.GetEmail.Name = "GetEmail";
   this.GetEmail.Size = new System.Drawing.Size(776, 244);
   this.GetEmail.TabIndex = 4;
   this.GetEmail.TabStop = false;
   this.GetEmail.Text = "获得EMAIL地址";
   //
   // button8
   //
   this.button8.Location = new System.Drawing.Point(420, 20);
   this.button8.Name = "button8";
   this.button8.Size = new System.Drawing.Size(84, 23);
   this.button8.TabIndex = 6;
   this.button8.Text = "按字母排序";
   this.button8.Click += new System.EventHandler(this.button8_Click);
   //
   // button5
   //
   this.button5.Location = new System.Drawing.Point(260, 20);
   this.button5.Name = "button5";
   this.button5.Size = new System.Drawing.Size(64, 23);
   this.button5.TabIndex = 5;
   this.button5.Text = "重新开始";
   //
   // button4
   //
   this.button4.Location = new System.Drawing.Point(212, 20);
   this.button4.Name = "button4";
   this.button4.Size = new System.Drawing.Size(40, 23);
   this.button4.TabIndex = 4;
   this.button4.Text = "暂停";
   //
   // button3
   //
   this.button3.Location = new System.Drawing.Point(644, 20);
   this.button3.Name = "button3";
   this.button3.Size = new System.Drawing.Size(124, 23);
   this.button3.TabIndex = 3;
   this.button3.Text = "清除全部EMAIL地址";
   //
   // button2
   //
   this.button2.Location = new System.Drawing.Point(512, 20);
   this.button2.Name = "button2";
   this.button2.Size = new System.Drawing.Size(124, 23);
   this.button2.TabIndex = 2;
   this.button2.Text = "删除选定EMAIL地址";
   this.button2.Click += new System.EventHandler(this.button2_Click);
   //
   // button1
   //
   this.button1.Location = new System.Drawing.Point(96, 20);
   this.button1.Name = "button1";
   this.button1.Size = new System.Drawing.Size(108, 23);
   this.button1.TabIndex = 1;
   this.button1.Text = "开始抓EMAIL地址";
   this.button1.Click += new System.EventHandler(this.button1_Click);
   //
   // listEmail
   //
   this.listEmail.ItemHeight = 12;
   this.listEmail.Location = new System.Drawing.Point(8, 52);
   this.listEmail.Name = "listEmail";
   this.listEmail.Size = new System.Drawing.Size(760, 184);
   this.listEmail.TabIndex = 0;
   this.listEmail.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended;
   //
   // Form1
   //
   this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
   this.ClientSize = new System.Drawing.Size(792, 573);
   this.Controls.Add(this.GetEmail);
   this.Controls.Add(this.labelCue);
   this.Controls.Add(this.label5);
   this.Controls.Add(this.groupBox1);
   this.Cursor = System.Windows.Forms.Cursors.Default;
   this.Icon = ((System.Drawing.Icon)(resources.GetObject("$this.Icon")));
   this.Name = "Form1";
   this.Text = "EMAIL地址抓捕器";
   this.groupBox1.ResumeLayout(false);
   this.GetEmail.ResumeLayout(false);
   this.ResumeLayout(false);
  }
  #endregion
  /// <summary>
  /// 应用程序的主入口点。
  /// </summary>
  [STAThread]
  static void Main()
  {
   Application.Run(new Form1());
  }
  private void buttonUrl_Click(object sender, System.EventArgs e)
  {
   if(startUrl.Text == "")
   {
    MessageBox.Show(this,"开始部分不能为空！","开始部分不能为空！",MessageBoxButtons.OK,MessageBoxIcon.Information);
   }
   else if(!(startID.Text == "") && (endID.Text == ""))
   {
    MessageBox.Show(this,"结束ID不能为空！","结束ID不能为空！",MessageBoxButtons.OK,MessageBoxIcon.Information);
   }
   else if(startID.Text == "")
   {
    listUrl.Items.Add(startUrl.Text.ToString());
   }
   else
   {
    if(Convert.ToInt32(startID.Text.ToString()) > Convert.ToInt32(endID.Text.ToString()))
    {
     for(int i = Convert.ToInt32(startID.Text.ToString());i >= Convert.ToInt32(endID.Text.ToString());i--)
     {
      listUrl.Items.Add(startUrl.Text.ToString() + i.ToString() + endUrl.Text.ToString());
     }
    }
    else
    {
     for(int i = Convert.ToInt32(startID.Text.ToString());i <= Convert.ToInt32(endID.Text.ToString());i++)
     {
      listUrl.Items.Add(startUrl.Text.ToString() + i.ToString() + endUrl.Text.ToString());
     }
    }
   }
  }
  private void DownHtmlAndEmail(string Url)
  {
   HttpWebRequest loHttp = (HttpWebRequest) WebRequest.Create(Url);
   HttpWebResponse loWebResponse = (HttpWebResponse) loHttp.GetResponse();
   Encoding enc = Encoding.Default;
   StreamReader loResponseStream = new StreamReader(loWebResponse.GetResponseStream(),enc);
   string download = loResponseStream.ReadToEnd();
   if(download.IndexOf("@") == -1)
   {
   }
   else
   {
    char[] emailBorder = new char[]{' ','/"','/'','>',':','|','：','“','”','?','<'};
    int emailCount = download.IndexOf("@");
    for(int i=0;i<1;i++)
    {
     int emailPlace = download.IndexOf("@");
     emailCount = download.IndexOf("@");
     int startEmail = emailCount;
     int endEmail = emailCount;
     for(int ii = startEmail;ii > 100;ii--)
     {
      bool bBreak1=false;
      for(int j = 0;j < emailBorder.Length;j++)
      {
       if(download[ii] == emailBorder[j])
       {
        startEmail = ii;
        bBreak1=true;
        break;
       }
      }
      if(bBreak1)break;
     }
     for(int iii = endEmail;iii < emailCount + 50;iii++)
     {
      bool bBreak2=false;
      for(int j = 0;j < emailBorder.Length;j++)
      {
       if(download[iii] == emailBorder[j])
       {
        endEmail = iii;
        bBreak2=true;
        break;
       }
      }
      if(bBreak2)break;
     }
     string email = download.Substring(startEmail+1,endEmail-startEmail-1);
     listEmail.Items.Add(email);
     int emailCountTo = download.IndexOf("@",emailCount) + 1;
     labelCue.Text = listEmail.Items.Count.ToString();
     if(emailCount > emailCountTo)
     {
      emailCount = download.IndexOf("@",emailCount);
      i--;
     }
    }
   }
  }
  private void button1_Click(object sender, System.EventArgs e)
  {
   if(listUrl.Items.Count<1)
   {
    labelCue.Text = "请先生成抓捕网址！";
   }
   else
   {
    for(int i = 0;i < listUrl.Items.Count;i++)
    {
     DownHtmlAndEmail(listUrl.Items[i].ToString());
    }
   }
  }
  private void button6_Click(object sender, System.EventArgs e)
  {
   /*
   int count = listUrl.Items.Count;
   if(count > 0)
   {
    for(int i = 0;i < count;i ++)
    {
     listUrl.Items.Remove();
    }
   }
   else
   {
    MessageBox.Show(this,"请先生成网址！","请先生成网址！",MessageBoxButtons.OK,MessageBoxIcon.Information);
   }
   */
  }
  private void button7_Click(object sender, System.EventArgs e)
  {
   int count = listUrl.SelectedItems.Count;
   if(listUrl.SelectedItems.Count > 0)
   {
    for(int i = 0;i < count;i ++)
    {
     listUrl.Items.Remove(listUrl.SelectedItems[0]);
    }
   }
   else
   {
    MessageBox.Show(this,"请先选择网址！","请先选择网址！",MessageBoxButtons.OK,MessageBoxIcon.Information);
   }
  }
  private void button2_Click(object sender, System.EventArgs e)
  {
   int count = listEmail.SelectedItems.Count;
   if(listEmail.SelectedItems.Count > 0)
   {
    for(int i = 0;i < count;i ++)
    {
     listEmail.Items.Remove(listEmail.SelectedItems[0]);
    }
   }
   else
   {
    MessageBox.Show(this,"请先选择Email地址！","请先选择Email地址！",MessageBoxButtons.OK,MessageBoxIcon.Information);
   }
  }
  private void button8_Click(object sender, System.EventArgs e)
  {
   int count = listEmail.Items.Count;
   if(listEmail.Items.Count > 0)
   {
    for(int i = 0;i < count;i ++)
    {
     listEmail.Sorted = true;
    }
   }
   else
   {
    MessageBox.Show(this,"没有Email地址！","没有Email地址！",MessageBoxButtons.OK,MessageBoxIcon.Information);
   }
  }

 }
}