域认证登录

    public static bool VerifyUser(string username, string pwd)
        {
            string path;
            path = "LDAP://OU=Users,OU=,OU=,DC=,DC=";
            bool bRet = false;
            DirectoryEntry de = new DirectoryEntry(path, username.ToLower(), pwd, AuthenticationTypes.Secure);
            de.Username = username;
            de.Password = pwd;
            //密码经过散列
            string strSearch = "(SAMAccountName=" + username + ")";
            DirectorySearcher deSearcher = new DirectorySearcher(de, strSearch);
            deSearcher.SearchScope = SearchScope.Subtree;
            try
            {
                SearchResult sr = deSearcher.FindOne();
                bRet = true;
            }
            catch (System.Exception ex)
            {
                Console.WriteLine(ex.Message);
            }
            return bRet;
        }