public int getSelectSetCount(SelectSet set) { int count = 0; //记录符合选择项的ids ObjectIDs oids = new ObjectIDs(); ObjectID oid = new ObjectID(); if (set != null) { //获取选择集列表 List <SelectSetItem> lst = set.Get(); foreach (SelectSetItem item in lst) { count += item.IDList.Count; } if (lst == null || lst.Count == 0) { return(count); } //获取图层信息 MapLayer maplayer = lst[0].Layer; //获取图层对应的要素类的信息 basClass = maplayer.GetData(); //获取处于编辑状态第一个图层的要素ID列表 List <long> idarr = lst[0].IDList; for (int i = 0; i < idarr.Count; i++) { oid.Int64Val = idarr[i]; oids.Append(oid); } rcdSet = new RecordSet(basClass); //添加结果集 rcdSet.AddSet(oids); } attCtrl.SetXCls((IVectorCls)basClass, rcdSet); return(count); }