Interview help

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NickFitz replied

12 August 2009, 11:57

I'd google for this:

Code:

using System;
using System.Net;
using System.IO;
using System.Text;
using System.Xml;

namespace ExchangeSDK.Snippets.CSharp
{
class SearchingFoldersWebDAVUnread
{
  [STAThread]
  static void Main(string[] args)
  {
   // Variables.
   System.Net.HttpWebRequest Request;
   System.Net.WebResponse Response;
   System.Net.CredentialCache MyCredentialCache;
   string strInboxURI = "http://Servername/exchange/mailbox/inbox";
   string strUserName = "username";
   string strPassword = "password";
   string strDomain = "domain";
   string strQuery ="";
   byte[] bytes = null;
   System.IO.Stream RequestStream = null;
   System.IO.Stream ResponseStream = null;
   XmlDocument ResponseXmlDoc = null;
   XmlNodeList DisplayNameNodes = null;

   try
   {
    // Build the SQL query.
    strQuery = "<?xml version=\"1.0\"?><D:searchrequest xmlns:D = \"DAV:\" 
>"
     + "<D:sql>SELECT \"DAV:displayname\" FROM \"" + strInboxURI + "\""
     + "WHERE \"DAV:ishidden\" = false AND \"DAV:isfolder\" = false"
     + " AND \"urn:schemas:httpmail:read\" = 
false</D:sql></D:searchrequest>";

    // Create a new CredentialCache object and fill it with the network
    // credentials required to access the server.
    MyCredentialCache = new System.Net.CredentialCache();
    MyCredentialCache.Add( new System.Uri(strInboxURI),
     "NTLM",
     new System.Net.NetworkCredential(strUserName, strPassword, strDomain)
     );

    // Create the HttpWebRequest object.
    Request = (System.Net.HttpWebRequest)HttpWebRequest.Create(strInboxURI);

    // Add the network credentials to the request.
    Request.Credentials = MyCredentialCache;

    // Specify the method.
    Request.Method = "SEARCH";

    // Encode the body using UTF-8.
    bytes = Encoding.UTF8.GetBytes((string)strQuery);

    // Set the content header length.  This must be
    // done before writing data to the request stream.
    Request.ContentLength = bytes.Length;

    // Get a reference to the request stream.
    RequestStream = Request.GetRequestStream();

    // Write the SQL query to the request stream.
    RequestStream.Write(bytes, 0, bytes.Length);

    // Close the Stream object to release the connection
    // for further use.
    RequestStream.Close();

    // Set the content type header.
    Request.ContentType = "text/xml";

    // Send the SEARCH method request and get the
    // response from the server.
    Response = (HttpWebResponse)Request.GetResponse();

    // Get the XML response stream.
    ResponseStream = Response.GetResponseStream();

    // Create the XmlDocument object from the XML response stream.
    ResponseXmlDoc = new XmlDocument();
    ResponseXmlDoc.Load(ResponseStream);

    // Build a list of the DAV:href XML nodes, corresponding to the folders
    // in the mailbox.  The DAV: namespace is typically assgigned the a:
    // prefix in the XML response body.
    DisplayNameNodes = ResponseXmlDoc.GetElementsByTagName("a:displayname");
    Console.WriteLine("Number of Unread Messages:" + 
DisplayNameNodes.Count);


    // Clean up.
    ResponseStream.Close();
    Response.Close();

   }
   catch(Exception ex)
   {
    // Catch any exceptions. Any error codes from the SEARCH
    // method request on the server will be caught here, also.
    Console.WriteLine(ex.Message);
   }
  }
}
}

It uses WebDAV, apparently