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public class ResultRow
    {
        public String firstname;
        public String lastname;
        public String shortcut;
        public String company;
        public String phone;
        public String fax;
        public String fax2;
        public String mobile;
        public String mail;
        public String bui_room;
        public String department;
        public String cost_center;
        public String post;
        public String phone_repr;
        public String note;
    }

    public class ResultList : List<ResultRow>{};

    [DataObject(true)]
    public class ListGUIAdapter
    {
        private ResultList results
        {
            get{
                if (HttpContext.Current.Session["results"] == null) return new ResultList();
                else return (ResultList)HttpContext.Current.Session["results"];
            }
            set{ HttpContext.Current.Session["results"] = value; }
        }

        [DataObjectMethod(DataObjectMethodType.Select, true)]
        public ResultList LoadToGrid()
        {
            return results;
        }

        [DataObjectMethod(DataObjectMethodType.Delete, true)]
        public void DeleteResult(ResultRow toDelete)
        {
            ResultList buffer = results;
            buffer.Remove(toDelete);
            results = buffer;
        }

        [DataObjectMethod(DataObjectMethodType.Update, true)]
        public void UpdateResult(ResultRow toUpdate)
        {
            ResultList buffer = results;
            buffer.Remove(toUpdate);
            buffer.Add(toUpdate);
            results = buffer;
        }

        [DataObjectMethod(DataObjectMethodType.Insert, true)]
        public void InsertResult(ResultRow newResult)
        {
            ResultList buffer = results;
            buffer.Add(newResult);
            results = buffer;
        }
    }