public JsonResult CreateAndEditer(string positionId, string posName, string parentId, string remark) { Position posit; if (string.IsNullOrEmpty(positionId)) { posit = new Position(); } else { posit = db.GetModel(int.Parse(positionId)); } posit.PosName = posName; if (string.IsNullOrEmpty(parentId)) { posit.ParentId = null; } else { posit.ParentId = int.Parse(parentId); } posit.Remark = remark; posit.LastChangeTime = DateTime.Now; db.Save(posit); return(Json("OK")); }