public List <TreeGridItem> GetItems(string datacollectionid, string groupid, string groupPath, string sort, string searchString, int pageNumber, int pageSize)
        {
            BaseService.CheckLoginAndLicense();
            if ((groupid == null || groupid == "") &&
                (groupPath != null && groupPath != ""))
            {
                //haal folder id op vanuit path
                //path wordt gebruikt als er vanuit de breadcrumb wordt genavigeerd
                string where = String.Format("CompletePath = '{0}'", groupPath);
                DataGroup group = BaseObject.GetFirst <DataGroup>(where);
                groupid = group.ID.ToString();
            }

            if (sort == "" || sort == null)
            {
                sort = "OrderNumber";
            }

            string whereItems = String.Format("FK_DataCollection = '{0}' AND FK_Parent_Group='{1}'", datacollectionid, groupid);

            if (groupid == null || groupid == "" || groupid == Guid.Empty.ToString())
            {
                whereItems = String.Format("FK_DataCollection = '{0}' AND FK_Parent_Group Is Null", datacollectionid);
            }
            if (searchString != null && searchString != "")
            {
                whereItems = String.Format("FK_DataCollection = '{0}' AND (Name like '%{1}%' OR Title like '%{1}%')", datacollectionid, searchString);
            }
            BaseCollection <DataItem> itemslist = BaseCollection <DataItem> .Get(whereItems, sort, pageNumber, pageSize);

            List <TreeGridItem> returnList = new List <TreeGridItem>();

            //DataItems met 0 in de array? Reset alle ordernummers. FIX
            if (itemslist.Any(c => c.OrderNumber <= 0))
            {
                int i = 1;
                foreach (DataItem dataItem in itemslist)
                {
                    dataItem.OrderNumber = i;
                    dataItem.Save();
                    i++;
                }
            }

            foreach (DataItem dataItem in itemslist)
            {
                TreeGridItem item = TreeGridItem.NewItem <DataItem>(dataItem);
                item.Title  = dataItem.Title;
                item.Field1 = dataItem.OrderNumber.ToString();


                if (searchString != null && searchString != "")
                {
                    if (dataItem.ParentGroup != null)
                    {
                        item.Field2 = dataItem.ParentGroup.CompletePath;
                        item.Field3 = dataItem.ParentGroup.ID.ToString();
                    }

                    //item.Name = item.Name.Replace(searchString, "<span class='highlight'>" + searchString + "</span>");
                    //item.Title = item.Title.Replace(searchString, "<span class='highlight'>" + searchString + "</span>");
                    item.Name  = StringHelper.HighlightSearchResults(item.Name, searchString);
                    item.Title = StringHelper.HighlightSearchResults(item.Title, searchString);
                }
                item.Status = dataItem.ChangeStatusString;
                returnList.Add(item);
            }
            return(returnList);
        }