1: public static System.Web.UI.WebControls.ListItemCollection GetContacts(string UserName,string Password,string Directory) 

   2: {

   3:     System.Web.UI.WebControls.ListItemCollection ReturnArray = new System.Web.UI.WebControls.ListItemCollection();

   4:     string server = "http:/ /ExchangeServer";

   5:     NetworkCredential credentials = new NetworkCredential(UserName, Password);

   6:     string uri = string.Format("{0}/exchange/{1}", server, credentials.UserName);

   7:     byte[] contents = System.Text.Encoding.UTF8.GetBytes(string.Format( 

   8:  

   9:        @"<?xml version=""1.0""?> 

  10:  

  11:         <g:searchrequest xmlns:g=""DAV:""> 

  12:  

  13:             <g:sql> 

  14:  

  15:                 SELECT 

  16:  

  17:                     ""urn:schemas:contacts:givenName"", ""urn:schemas:contacts:sn"", 

  18:  

  19:                     ""urn:schemas:contacts:email1"" 

  20:  

  21:                 FROM 

  22:  

  23:                     Scope('SHALLOW TRAVERSAL OF ""{0}/exchange/{1}/contacts""') 

  24:  

  25:             </g:sql> 

  26:  

  27:         </g:searchrequest>", 

  28:  

  29:       server, credentials.UserName)); 

  30:  

  31:   

  32:  

  33:     HttpWebRequest request = HttpWebRequest.Create(uri) as HttpWebRequest;

  34:     request.Credentials = credentials;

  35:     request.Method = "SEARCH";

  36:     request.ContentLength = contents.Length;

  37:     request.ContentType = "text/xml"; 

  38:  

  39:     using (System.IO.Stream requestStream = request.GetRequestStream())

  40:         requestStream.Write(contents, 0, contents.Length); 

  41:  

  42:   

  43:  

  44:     using (HttpWebResponse response = request.GetResponse() as HttpWebResponse)

  45:     using (System.IO.Stream responseStream = response.GetResponseStream())

  46:     {

  47:         XmlDocument document = new XmlDocument();

  48:         document.Load(responseStream);

  49:         foreach (XmlElement element in document.GetElementsByTagName("a:prop"))

  50:         {

  51:             if (element["d:sn"] != null && element["d:givenName"] != null && element["d:email1"] != null)

  52:             {

  53:                 System.Web.UI.WebControls.ListItem TempItem = new System.Web.UI.WebControls.ListItem();

  54:                 TempItem.Text = element["d:sn"].InnerText+", "+element["d:givenName"].InnerText;

  55:                 TempItem.Value = element["d:email1"].InnerText;

  56:                 ReturnArray.Add(TempItem);

  57:             }

  58:         }

  59:     }

  60:     return ReturnArray;

  61: }