AddUser(@"C:\\Test3", "Tuser5", "F#4H11u>14"); 


 private System.DirectoryServices.DirectoryEntry ActiveDirectory
        {
            get
            {
                if (objActive != null)
                    return objActive;
                else
                {
                    objActive = new System.DirectoryServices.DirectoryEntry("WinNT://" + Environment.MachineName + ",computer");
                    return objActive;
                }
            }
        }

        public void AddUser(string folderPath, string userName, string password)
        {

            System.DirectoryServices.DirectoryEntry objUser = null;

            try
            {
                objUser = ActiveDirectory.Children.Find(userName, "user");
            }
            catch
            {
            }

            if (objUser == null)
            {
                objUser = ActiveDirectory.Children.Add(userName, "user");
                objUser.CommitChanges();
                objUser.Invoke("Put", new object[] { "Description", "Created by Gnana Prakash for Demo Project " });
                objUser.CommitChanges();
                objUser.Invoke("SetPassword", new object[] { password });
            

           


                //password never expires prop set ..
                int flags = 0x10000;
                objUser.Invoke("Put", new object[] { "UserFlags", flags });

                objUser.CommitChanges();
                objUser.RefreshCache();

                objUser = null;

                SetSecurity(folderPath, userName);
             }
        }

   public void SetSecurity(string folderPath, string userName)
        {
            DirectoryInfo objDirectoryInfo = null;
            DirectorySecurity objDirectorySecurity = null;
            FileSystemAccessRule objRule = null;
            try
            {
                objDirectoryInfo = new DirectoryInfo(folderPath);
                if (!Directory.Exists(folderPath))
                    Directory.CreateDirectory(folderPath);

                //NTAccount objIdentity = new NTAccount(Environment.MachineName + @"\" + userName);
                //System.Security.Principal.SecurityIdentifier objk = (SecurityIdentifier)objIdentity.Translate(typeof(SecurityIdentifier)); 
                
                objDirectorySecurity = objDirectoryInfo.GetAccessControl();
                objRule = new FileSystemAccessRule( userName, 
                                                    FileSystemRights.ReadPermissions,
                                                    AccessControlType.Allow);
                objDirectorySecurity.AddAccessRule(objRule);
                
               
               
                 
                objDirectoryInfo.SetAccessControl(objDirectorySecurity);
                label1.Visible = true; 
            }
            finally
            {
                objDirectoryInfo = null;
                objDirectorySecurity = null;
                objRule = null;
            }

        }