<appSettings>    <!--域登陆Path-->    <add key="ADPath" value=http://www.mamicode.com/"LDAP:10.10.1.111"/>    <!--域登陆Domain-->    <add key="ADDomain" value=http://www.mamicode.com/"10.10.1.111"/>  </appSettings>

/// <summary>        /// 域账号是否登陆成功        /// </summary>        /// <param name="username">域登陆账号</param>        /// <param name="pwd">域登陆密码</param>        /// <returns></returns>        public static bool IsAuthenticated(string username, string pwd)        {            string adPath = ConfigurationManager.AppSettings["ADPath"].ToString();            string domain = ConfigurationManager.AppSettings["ADDomain"].ToString();            string domainUserName = domain + @"\" + username;      //或者可以这样 string domainUserName = username;            DirectoryEntry entry = new DirectoryEntry(adPath, domainUserName, pwd);            try            {                DirectorySearcher deSearch = new DirectorySearcher(entry);                deSearch.Filter = "(&(objectCategory=Person)(objectClass=User)(SAMAccountName=" + username + "))";                deSearch.PropertiesToLoad.Add("cn");                SearchResult result = deSearch.FindOne();                if (null == result)                {                    return false;                }                //可以获取相关信息                string _path = result.Path;                string _filterAttribute = (string)result.Properties["cn"][0];            }            catch (Exception ex)            {                throw new Exception(ex.Message);            }            return true;        }