MVCPostall/Postall.Domain/ValueObjects/Name.cs

using BaseDomain;

namespace Blinks.Domain
{
    public class Name : AValueObject
    {
        public Name(string fullName) 
        { 
            this.FullName = fullName;
            var names = fullName.Split(' ');
            if (names.Length >= 2)
            {
                this.FirstName = names[0];
                this.LastName = names[names.Length-1];
            }
        }

        public string FullName { get; set; }
        public string FirstName { get; set; }
        public string LastName { get; set; }

        public override bool GetValidationExpression()
        {
            return this.IsValid = this.IsValidName(FullName);
        }

        public override string ToString()
        {
            return this.FullName;
        }

        protected override IEnumerable<object> GetEqualityComponents()
        {
            yield return this.FullName;
        }

        private bool IsValidName(string fullName)
        {
            return fullName.Contains(' ');
        }

        public static implicit operator string(Name name) => name.FullName;
        public static explicit operator Name(string fullname) => new Name(fullname);
    }
}