public RegisterPropertyAdminModel(
            UserManager <IdentityUser> userManager,
            SignInManager <IdentityUser> signInManager,
            ILogger <RegisterPropertyAdminModel> logger,
            IEmailSender emailSender,
            Property_Sales_IdentityContext dataContext
            )
        {
            var roleStore = new RoleStore <IdentityRole>(dataContext);

            _roleManager   = new RoleManager <IdentityRole>(roleStore, null, null, null, null);
            _userManager   = userManager;
            _signInManager = signInManager;
            _logger        = logger;
            _emailSender   = emailSender;
        }
        public RegisterModel(
            UserManager <IdentityUser> userManager,
            SignInManager <IdentityUser> signInManager,
            ILogger <RegisterModel> logger,
            IEmailSender emailSender,
            Property_Sales_IdentityContext context,
            Property_Sales_DatabaseContext dataContext
            )
        {
            this.dataContext = dataContext;
            _userManager     = userManager;

            var roleStore = new RoleStore <IdentityRole>(context);

            _roleManager   = new RoleManager <IdentityRole>(roleStore, null, null, null, null);
            _signInManager = signInManager;
            _logger        = logger;
            _emailSender   = emailSender;
        }