/// 計算機用戶和組操作類
    ///

    public class UserAndGroupHelper
    {
        private static readonly string PATH = "WinNT://" + Environment.MachineName;
        ///

        /// 添加windows用戶
        ///

        /// 用戶名
        /// 密碼
        /// 所屬組
        /// 描述
        public static void AddUser(string username, string password, string group, string description)
        {
            using (DirectoryEntry dir = new DirectoryEntry(PATH))
            {
                using (DirectoryEntry user = dir.Children.Add(username, "User")) //增加用戶名
                {
                    user.Properties["FullName"].Add(username); //用戶全稱
                    user.Invoke("SetPassword", password); //用戶密碼
                    user.Invoke("Put", "Description", description);//用戶詳細描述
                    //user.Invoke("Put","PasswordExpired",1); //用戶下次登錄需更改密碼
                    user.Invoke("Put", "UserFlags", 66049); //密碼永不過期
                    //user.Invoke("Put", "UserFlags", 0x0040);//用戶不能更改密碼s
                    user.CommitChanges();//保存用戶
                    using (DirectoryEntry grp = dir.Children.Find(group, "group"))
                    {
                        if (grp.Name != "")
                        {
                            grp.Invoke("Add", user.Path.ToString());//將用戶添加到某組
                        }
                    }
                }
            }
        }
        ///

        /// 更改windows用戶密碼
        ///

        /// 用戶名
        /// 新密碼
        public static void UpdateUserPassword(string username, string newpassword)
        {
            using (DirectoryEntry dir = new DirectoryEntry(PATH))
            {
                using (DirectoryEntry user = dir.Children.Find(username, "user"))
                {
                    user.Invoke("SetPassword", new object[] { newpassword });
                    user.CommitChanges();
                }
            }
        }
        ///

        /// 刪除windows用戶
        ///

        /// 用戶名
        public static void RemoveUser(string username)
        {
            using (DirectoryEntry dir = new DirectoryEntry(PATH))
            {
                using (DirectoryEntry user = dir.Children.Find(username, "User"))
                {
                    dir.Children.Remove(user);
                }
            }
        }
        ///

        /// 添加windows用戶組
        ///

        /// 組名稱
        /// 描述
        public static void AddGroup(string groupName, string description)
        {
            using (DirectoryEntry dir = new DirectoryEntry(PATH))
            {
                using (DirectoryEntry group = dir.Children.Add(groupName, "group"))
                {
                    group.Invoke("Put", new object[] { "Description", description });
                    group.CommitChanges();
                }
            }
        }
        ///

        /// 刪除windows用戶組
        ///

        /// 組名稱
        public static void RemoveGroup(string groupName)
        {
            using (DirectoryEntry dir = new DirectoryEntry(PATH))
            {
                using (DirectoryEntry group = dir.Children.Find(groupName, "Group"))
                {
                    dir.Children.Remove(group);
                }
            }
        }
    }
}