public DataGridView MemberAssignmentBox(DataGridView data, Member selectedMember)
        {
            List <Assignment>       assignments = manager.AssignmentsByCongregationId(selectedMember.CongregationId);
            List <MemberAssignment> ma          = manager.MemberAssignmentsByMemberId(selectedMember.Id);

            data.Rows.Clear();
            data.Refresh();

            foreach (Assignment a in assignments)
            {
                bool isAssigned;
                if (ma.Any(z => z.AssignmentId == a.Id))
                {
                    isAssigned = true;
                }
                else
                {
                    isAssigned = false;
                }
                data.Rows.Add(a.Id.ToString(), a.PositionOnSchedule, isAssigned, a.Label, a.Description, a.AmountPerMeeting);
            }
            data.Sort(data.Columns["SchedulePosition"], System.ComponentModel.ListSortDirection.Ascending);
            return(data);
        }