private void AddGroupMember()
        {
            int defaultRoleId         = _groupType.DefaultGroupRoleId ?? _groupType.Roles.Select(r => r.Id).FirstOrDefault();
            int recordTypePersonId    = DefinedValueCache.Read(Rock.SystemGuid.DefinedValue.PERSON_RECORD_TYPE_PERSON.AsGuid()).Id;
            int recordStatusActiveId  = DefinedValueCache.Read(Rock.SystemGuid.DefinedValue.PERSON_RECORD_STATUS_ACTIVE.AsGuid()).Id;
            var ConnectionStatusValue = DefinedValueCache.Read(GetAttributeValue("DefaultConnectionStatus").AsGuid());

            var person = new Person();

            person.Guid = Guid.NewGuid();
            person.RecordTypeValueId   = recordTypePersonId;
            person.RecordStatusValueId = recordStatusActiveId;
            person.Gender = Gender.Unknown;
            person.ConnectionStatusValueId = (ConnectionStatusValue != null) ? ConnectionStatusValue.Id : (int?)null;

            var groupMember = new GroupMember();

            groupMember.GroupMemberStatus = GroupMemberStatus.Active;
            groupMember.GroupRoleId       = defaultRoleId;
            groupMember.Person            = person;

            if (GetAttributeValue("EnableCommonLastName").AsBoolean())
            {
                if (GroupMembers.Count > 0)
                {
                    person.LastName = GroupMembers.FirstOrDefault().Person.LastName;
                }
            }

            GroupMembers.Add(groupMember);
        }
        /// <summary>
        /// Handles the DeleteClick event of the groupMemberRow control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
        void groupMemberRow_DeleteClick(object sender, EventArgs e)
        {
            NewGroupMembersRow row = sender as NewGroupMembersRow;
            var groupMember        = GroupMembers.FirstOrDefault(m => m.Person.Guid.Equals(row.PersonGuid));

            if (groupMember != null)
            {
                GroupMembers.Remove(groupMember);
            }

            CreateControls(true);
        }