用.net导出Yahoo的地址簿

直接上代码：

using System;
using System.Collections.Generic;
using System.Collections.Specialized;  
using System.Net;  
using System.Text;
using System.Text.RegularExpressions;  

namespace Yahoo
{
   public class YahooExtract
    {
        private const string _addressBookUrl = "http://address.yahoo.com/yab/us/Yahoo_ab.csv?loc=us&.rand=1671497644&A=H&Yahoo_ab.csv";
        private const string _authUrl = "https://login.yahoo.com/config/login?";
        private const string _loginPage = "https://login.yahoo.com/config/login";
        private const string _userAgent = "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3";

        public bool Extract(NetworkCredential credential, out MailContactList list)
        {
            bool result = false;

            list = new MailContactList();

            try
            {
                WebClient webClient = new WebClient();
                webClient.Headers[HttpRequestHeader.UserAgent] = _userAgent;
                webClient.Encoding = Encoding.UTF8;

                byte[] firstResponse = webClient.DownloadData(_loginPage);
                string firstRes = Encoding.UTF8.GetString(firstResponse);


                NameValueCollection postToLogin = new NameValueCollection();
                Regex regex = new Regex("type=\"hidden\" name=\"(.*?)\" value=\"(.*?)\"", RegexOptions.IgnoreCase);
                Match match = regex.Match(firstRes);
                while (match.Success)
                {
                    if (match.Groups[0].Value.Length > 0)
                    {
                        postToLogin.Add(match.Groups[1].Value, match.Groups[2].Value);
                    }
                    match = regex.Match(firstRes, match.Index + match.Length);
                }


                postToLogin.Add(".save", "Sign In");
                postToLogin.Add(".persistent", "y");

                string login = credential.UserName.Split('@')[0];
                postToLogin.Add("login", login);
                postToLogin.Add("passwd", credential.Password);

                webClient.Headers[HttpRequestHeader.UserAgent] = _userAgent;
                webClient.Headers[HttpRequestHeader.Referer] = _loginPage;
                webClient.Encoding = Encoding.UTF8;
                webClient.Headers[HttpRequestHeader.Cookie] = webClient.ResponseHeaders[HttpResponseHeader.SetCookie];

                webClient.UploadValues(_authUrl, postToLogin);
                string cookie = webClient.ResponseHeaders[HttpResponseHeader.SetCookie];

                if (string.IsNullOrEmpty(cookie))
                {
                    return false;
                }

                string newCookie = string.Empty;
                string[] tmp1 = cookie.Split(',');
                foreach (string var in tmp1)
                {
                    string[] tmp2 = var.Split(';');
                    newCookie = String.IsNullOrEmpty(newCookie) ? tmp2[0] : newCookie + ";" + tmp2[0];
                }

                // set login cookie  
                webClient.Headers[HttpRequestHeader.Cookie] = newCookie;
                byte[] thirdResponse = webClient.DownloadData(_addressBookUrl);
                string thirdRes = Encoding.UTF8.GetString(thirdResponse);

                string crumb = string.Empty;
                Regex regexCrumb = new Regex("type=\"hidden\" name=\"\\.crumb\" id=\"crumb1\" value=\"(.*?)\"", RegexOptions.IgnoreCase);
                match = regexCrumb.Match(thirdRes);
                if (match.Success && match.Groups[0].Value.Length > 0)
                {
                    crumb = match.Groups[1].Value;
                }


                NameValueCollection postDataAB = new NameValueCollection();
                postDataAB.Add(".crumb", crumb);
                postDataAB.Add("vcp", "import_export");
                postDataAB.Add("submit[action_export_yahoo]", "Export Now");

                webClient.Headers[HttpRequestHeader.UserAgent] = _userAgent;
                webClient.Headers[HttpRequestHeader.Referer] = _addressBookUrl;

                byte[] FourResponse = webClient.UploadValues(_addressBookUrl, postDataAB);
                string csvData = Encoding.UTF8.GetString(FourResponse);

                string[] lines = csvData.Split('\n');
                foreach (string line in lines)
                {
                    string[] items = line.Split(',');
                    if (items.Length < 5)
                    {
                        continue;
                    }
                    string First = items[0];
                    string Last = items[2];
                    string NickName = items[3];
                    string email = items[4];
                    if (!string.IsNullOrEmpty(email)) //&& !string.IsNullOrEmpty(name)
                    {
                        email = email.Trim('\"');
                        if (!email.Equals("Email")) //&& !name.Equals("Nickname")
                        {
                            MailContact mailContact = new MailContact();
                            mailContact.FirstName = First.Trim('\"');
                            mailContact.LastName = Last.Trim('\"');
                            mailContact.NickName = NickName.Trim('\"');
                            mailContact.Email = email;
                            list.Add(mailContact);
                        }
                    }
                }

                result = true;
            }
            catch
            {
            }
            return result;
        }

    }
   public class MailContact
   {
       public string FirstName
       {
           get;
           set;
       }

       public string LastName
       {
           get;
           set;
       }

       public string Email
       {
           get;
           set;
       }

       public string NickName
       {
           get;
           set;
       }
   }
   public class MailContactList : List<MailContact>
   {
   }
}

测试：

            YahooExtract yhe = new YahooExtract();

            NetworkCredential credential = new NetworkCredential(user,pwd);

            MailContactList list = new MailContactList(); 

            Console.WriteLine(yhe.Extract(credential, out list).ToString());

            //i = 1 

            for (int i = 1; i < list.Count; i++)

            {

                Console.WriteLine(list[i].FirstName + list[i].LastName );

            }

            Console.WriteLine(list.Count.ToString());

            Console.ReadKey();

可以到DataTable:

        public static DataTable ConvertCSVIntoDataTable(string strCSV)

        {

            DataTable table;

            try

            {

                Stream s = new MemoryStream(Encoding.UTF8.GetBytes(strCSV));

                DataTable table2 = new DataTable();

                using (CSVReader reader = new CSVReader(s))

                {

                    string[] cSVLine = reader.GetCSVLine();

                    foreach (string str in cSVLine)

                    {

                        table2.Columns.Add(str);

                    }

                    while ((cSVLine = reader.GetCSVLine()) != null)

                    {

                        DataRow row = table2.NewRow();

                        row.ItemArray = cSVLine;

                        table2.Rows.Add(row);

                    }

                }

                table = table2;

            }

            catch (Exception exception)

            {

                throw exception;

            }

            return table;

        }