1: public static StringDictionary GetGroupMembers(string GroupName, string UserName, string Password)

   2: {

   3:     try

   4:     {

   5:         StringDictionary ReturnArray = new StringDictionary();

   6:         DirectoryEntry deDirEntry = new DirectoryEntry("LDAP://LDAPDOMAIN",

   7:                                                            UserName,

   8:                                                            Password,

   9:                                                            AuthenticationTypes.Secure); 

  10:  

  11:         DirectorySearcher mySearcher = new DirectorySearcher(deDirEntry);

  12:         mySearcher.PropertiesToLoad.Add("distinguishedName"); 

  13:  

  14:         string sFilter = String.Format("(&(objectcategory=group)(cn=" + GroupName + "))"); 

  15:  

  16:         mySearcher.Filter = sFilter;

  17:         mySearcher.Sort.Direction = SortDirection.Ascending;

  18:         mySearcher.Sort.PropertyName = "cn"; 

  19:  

  20:         SearchResult result;

  21:         DirectoryEntry ResultEntry; 

  22:  

  23:         result = mySearcher.FindOne();

  24:         ResultEntry =result.GetDirectoryEntry(); 

  25:  

  26:         GroupName=ResultEntry.Properties["distinguishedName"].Value.ToString(); 

  27:  

  28:         mySearcher = new DirectorySearcher(deDirEntry);

  29:         mySearcher.PropertiesToLoad.Add("cn");

  30:         mySearcher.PropertiesToLoad.Add("mail"); 

  31:  

  32:         sFilter=String.Format("(&(memberOf={0}))", GroupName);

  33:         mySearcher.Filter = sFilter;

  34:         mySearcher.Sort.Direction = SortDirection.Ascending;

  35:         mySearcher.Sort.PropertyName = "cn";

  36:         mySearcher.PageSize = 1000; 

  37:  

  38:         SearchResultCollection results;

  39:         results = mySearcher.FindAll(); 

  40:  

  41:         foreach (SearchResult resEnt in results)

  42:         { 

  43:  

  44:             ResultPropertyCollection propcoll = resEnt.Properties;

  45:             string Name="";

  46:             string Email="";

  47:             foreach (string key in propcoll.PropertyNames)

  48:             {

  49:                 if (key == "cn")

  50:                 {

  51:                     foreach (object values in propcoll[key])

  52:                     {

  53:                         Name=values.ToString();

  54:                     }

  55:                 }

  56:                 else if(key=="mail")

  57:                 {

  58:                     foreach (object values in propcoll[key])

  59:                     {

  60:                         Email=values.ToString();

  61:                     }

  62:                 }

  63:             }

  64:             ReturnArray.Add(Name,Email);

  65:         }

  66:         return ReturnArray;

  67:     }

  68:     catch

  69:     {

  70:         return null;

  71:     }

  72: }