نمونه کد دریافت ایمیل با کمی اشکال

سلام دوستان
من این نمونه کد را برای دریافت ایمیل پیدا کردم که فکر کنم کار میده

using System;

using System.Net;

using System.IO;

using System.Text;

using System.Xml;

namespace Isrcomputing

{

    class ReadingMailWebDAV

    {

        public const string strServer = "";      // Exchange server name

        public const string strPassword = "";  // Account Domain Password

        public const string strDomain = "";    // Domain

        public const string strAlias = "";  // username





        [STAThread]

        static void Main(string[] args)

        {

            System.Net.HttpWebRequest SEARCHRequest;

            System.Net.WebResponse SEARCHResponse;

            System.Net.CredentialCache MyCredentialCache;

            string strRootURI = "";

            string strQuery = "";

            byte[] bytes = null;

            System.IO.Stream SEARCHRequestStream = null;



            try

            {

                // Build the mailbox URI.

                strRootURI = "https://" + strServer + "/exchange/" + strAlias + "/Inbox/";

                MyCredentialCache = new System.Net.CredentialCache();

                MyCredentialCache.Add(new System.Uri(strRootURI),

                  "NTLM",

                   new System.Net.NetworkCredential(strAlias, strPassword, strDomain)

                   );



                // Build the SQL query.            

                strQuery = "<?xml version=\"1.0\"?><D:searchrequest xmlns:D = \"DAV:\">"

                                 + "<D:sql>SELECT \"urn:schemas:httpmail:sendername\" , \"urn:schemas:httpmail:subject\","

                  + " \"urn:schemas:mailheader:from\", \"urn:schemas:httpmail:datereceived\" ,"

                                 + " \"urn:schemas:httpmail:date\", \"urn:schemas:httpmail:textdescription\" ,"

                                 + " \"urn:schemas:httpmail:htmldescription\", \"DAV:id\""

                                 + ", \"DAV:href\""

                                 + " FROM \"" + strRootURI + "\""

                                 + " WHERE \"DAV:ishidden\" = false AND \"DAV:isfolder\" = false"

                                 + " </D:sql></D:searchrequest>";

                // Create a new CredentialCache object and fill it with the network

                // credentials required to access the server.

                SEARCHRequest = (System.Net.HttpWebRequest)HttpWebRequest.Create(s  trRootURI);



                ServicePointManager.ServerCertificateValidationCal  lback = delegate(object sender, System.Security.Cryptography.X509Certificates.X509  Certificate pCertificate, System.Security.Cryptography.X509Certificates.X509  Chain pChain, System.Net.Security.SslPolicyErrors pSSLPolicyErrors)

                {

                    return true;

                };



                SEARCHRequest.Credentials = MyCredentialCache;

                SEARCHRequest.Method = "SEARCH";

                SEARCHRequest.ContentType = "text/xml";

                bytes = Encoding.UTF8.GetBytes((string)strQuery);

                SEARCHRequest.ContentLength = bytes.Length;

                SEARCHRequestStream = SEARCHRequest.GetRequestStream();

                SEARCHRequestStream.Write(bytes, 0, bytes.Length);

                SEARCHRequestStream.Close();



                SEARCHResponse = SEARCHRequest.GetResponse();

                System.Text.Encoding enc = System.Text.Encoding.Default;

                if (SEARCHResponse == null)

                {

                    Console.WriteLine("Response returned NULL!");

                }

                Console.WriteLine(SEARCHResponse.ContentLength);

                System.IO.StreamReader sr = new System.IO.StreamReader(SEARCHResponse.GetResponseS  tream(), System.Text.Encoding.ASCII);

                string sa = sr.ReadToEnd();

                sr.Close();

                SEARCHResponse.Close();



                XmlDocument doc = new XmlDocument();

                doc.InnerXml = sa;

                XmlNodeList mailId = doc.GetElementsByTagName("a:id");

                XmlNodeList mailFrom = doc.GetElementsByTagName("e:from");

                XmlNodeList mailReceivedDate = doc.GetElementsByTagName("d:datereceived");

                XmlNodeList mailSubject = doc.GetElementsByTagName("d:subject");

                XmlNodeList mailText = doc.GetElementsByTagName("d:textdescription");

                Console.WriteLine(mailId.Count);



                for (int i = 0; i < mailId.Count; ++i)

                {

                    Console.WriteLine("-------------------------------\n{0}: E-mail ID: {1}", i + 1, mailId[i].InnerText);

                    Console.WriteLine("From:\t{0}", mailFrom[i].InnerText);

                    Console.WriteLine("Received:\t{0}", mailReceivedDate[i].InnerText);

                    Console.WriteLine("Subject:\t{0}", mailSubject[i].InnerText);

                    Console.WriteLine("Content:\n{0}", mailText[i].InnerText);

                }



            }

            catch (Exception ex)

            {

                // Catch any exceptions. Any error codes from the PUT

                // or MOVE method requests on the server will be caught

                // here, also.

                Console.WriteLine("Problem: {0}", ex.Message);

            }

        }

    }

}

حالا مثلا برای جیمیل یا یاهو موارد زیر را باید چی قرار بدم

        public const string strServer = "";      // Exchange server name

        public const string strPassword = "";  // Account Domain Password

        public const string strDomain = "";    // Domain

        public const string strAlias = "";  // username

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