public bool DelBum() { bool b = true; blist = bm.GetModelList("b_hid=" + bid + ""); if (blist.Count > 0) { b = false; //存在下级目录 } else { bm.Delete(Convert.ToInt64(bid)); if (tb.GetModelList("by_bid='" + bid + "'").Count != 0) { tb.Delete(Convert.ToInt32(tb.GetModelList("by_bid='" + bid + "'")[0].by_id)); } } return(b); }