public bool DeleteProductAttr(string attrid, string operateIP, string operateid, string clientid, out int result) { var dal = new ProductsDAL(); bool bl = dal.DeleteProductAttr(attrid, clientid,out result); if (bl) { var list = GetAttrs(clientid); var model = GetProductAttrByID(attrid, clientid); list.Remove(model); } return bl; }