Arash.Membership.Site.MemberService.Validate C# (CSharp) Method

        public MembershipCreateStatus Validate(Member member)
        {
            var entity = _memberManager.Get(p => p.Username == member.Username);

            if (entity == null)
                return MembershipCreateStatus.Success;
            return MembershipCreateStatus.DuplicateUserName;
        }