/// <summary>
 /// Copy constructor.
 /// </summary>
 /// <param name="_membership"></param>
 public MembershipModel(MembershipModel _membership)
 {
     firstName = _membership.FirstName;
     lastName  = _membership.LastName;
     email     = _membership.Email;
 }
 // Parametrized constructor which is used to instantiate this object.
 public MessageMemberModel(MembershipModel mem, string sel)
 {
     Membership = mem;
     Selection  = sel;
 }