using System;using System.Collections.Generic;using System.Linq;using System.Text;using System.Configuration;using System.DirectoryServices.AccountManagement;using System.Collections;namespace UserTrans{    public static class Commons    {        static Configuration config;        static AppSettingsSection appSetting;        public static ILog logger = LogManager.GetLogger(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);        static bool CreateLocalWindowsAccount(string userName, string passWord, string displayName, string description, string groupName, bool canChangePwd, bool pwdExpires)        {            bool retIsSuccess = false;            try            {                PrincipalContext context = new PrincipalContext(ContextType.Machine);                UserPrincipal user = new UserPrincipal(context);                user.SetPassword(passWord);                user.DisplayName = displayName;                user.Name = userName;                user.Description = description;                user.UserCannotChangePassword = canChangePwd;                user.PasswordNeverExpires = pwdExpires;                user.Save();                GroupPrincipal group = GroupPrincipal.FindByIdentity(context, groupName);                group.Members.Add(user);                group.Save();                retIsSuccess = true;            }            catch (Exception ex)            {                retIsSuccess = false;            }            return retIsSuccess;        }        static GroupPrincipal CreateGroup(string groupName, Boolean isSecurityGroup)        {            GroupPrincipal retGroup = null;            try            {                retGroup = IsGroupExist(groupName);                if (retGroup == null)                {                    PrincipalContext ctx = new PrincipalContext(ContextType.Machine);                    GroupPrincipal insGroupPrincipal = new GroupPrincipal(ctx);                    insGroupPrincipal.Name = groupName;                    insGroupPrincipal.IsSecurityGroup = isSecurityGroup;                    insGroupPrincipal.GroupScope = GroupScope.Local;                    insGroupPrincipal.Save();                    retGroup = insGroupPrincipal;                }            }            catch (Exception ex)            {            }            return retGroup;        }        static GroupPrincipal IsGroupExist(string groupName)        {            GroupPrincipal retGroup = null;            try            {                PrincipalContext ctx = new PrincipalContext(ContextType.Machine);                GroupPrincipal qbeGroup = new GroupPrincipal(ctx);                PrincipalSearcher srch = new PrincipalSearcher(qbeGroup);                foreach (GroupPrincipal ingrp in srch.FindAll())                {                    if (ingrp != null && ingrp.Name.Equals(groupName))                    {                        retGroup = ingrp;                        break;                    }                }            }            catch (Exception ex)            {            }            return retGroup;        }

public static int UpdateGroupUsers(string groupName, List
     
       usersName)        {
               List
      
        addedUsers = new List
       
        ();            int retAddCount = 0;            GroupPrincipal qbeGroup = CreateGroup(groupName, false);            foreach (UserPrincipal user in qbeGroup.GetMembers())            {
                   if (usersName.Contains(user.Name))                {                    addedUsers.Add(user.Name);                    retAddCount++;                }                else                {                    user.Delete();                }            }            foreach (string addedUserName in addedUsers)            {                usersName.Remove(addedUserName);            }            foreach (string addUserName in usersName)            {                bool isSuccess = CreateLocalWindowsAccount(addUserName, "password", addUserName, "", groupName, false, false);                if (isSuccess)     retAddCount++;            }return retAddCount;        }
       
      
     

}}