NOS.Registration.RegistrationRepository.FindByUserName C# (CSharp) Method

		public User FindByUserName(string userName)
		{
			User user = null;

			_synchronizer.Lock(() =>
				{
					var allUsers = GetAll();

					user = allUsers.FirstOrDefault(x => x.UserName.Equals(userName, StringComparison.OrdinalIgnoreCase));
				});

			return user;
		}
	}