public async Task <IdentityResult> RegisterUser(UserModel userModel)
        {
            ChiroIdentityUser user = new ChiroIdentityUser
            {
                UserName = userModel.UserName,
                AdNummer = userModel.AdNummer,
            };

            var result = await _userManager.CreateAsync(user, userModel.Password);

            return(result);
        }
        public async Task <ChiroIdentityUser> FindUser(string userName, string password)
        {
            ChiroIdentityUser user = await _userManager.FindAsync(userName, password);

            return(user);
        }