/// <summary> /// 删除数据 /// </summary> /// <param name="paraTb_Roletouser"></param> /// <returns>true:删除成功,false:不存在该记录</returns> public bool deleteMode(tb_RoleToUser paraTb_Roletouser) { if(paraTb_Roletouser == null) throw new ArgumentNullException("paraTb_Roletouser"); try { var query = from p in _context.tb_RoleToUser where p.RoleUserId == paraTb_Roletouser.RoleUserId select p; if (query.ToList().Count<1) { return false; } else { foreach(var model in query.ToList()) { if(!_context.IsAttached(model)) _context.tb_RoleToUser.Attach(model); _context.tb_RoleToUser.DeleteObject(model); _context.SaveChanges(); } return true; } } catch (Exception ex) { throw ex; } }
/// <summary> /// 插入数据 /// </summary> /// <param name="paraTb_Roletouser"></param> /// <returns>true:插入成功,false:已存在该记录</returns> public bool addMode(tb_RoleToUser paraTb_Roletouser) { if(paraTb_Roletouser == null) throw new ArgumentNullException("paraTb_Roletouser"); try { var query = from p in _context.tb_RoleToUser where p.RoleUserId == paraTb_Roletouser.RoleUserId select p; if (query.ToList().Count() > 0) { return false; } else { _context.tb_RoleToUser.AddObject(paraTb_Roletouser); _context.SaveChanges(); return true; } } catch (Exception ex) { throw ex; } }
/// <summary> /// 用于向 tb_RoleToUser EntitySet 添加新对象的方法,已弃用。请考虑改用关联的 ObjectSet<T> 属性的 .Add 方法。 /// </summary> public void AddTotb_RoleToUser(tb_RoleToUser tb_RoleToUser) { base.AddObject("tb_RoleToUser", tb_RoleToUser); }
/// <summary> /// 更新数据 /// </summary> /// <param name="paraTb_Roletouser"></param> /// <returns>true:更新成功,false:更新数据失败,不存在该记录!</returns> public bool updateMode(tb_RoleToUser paraTb_Roletouser) { if(paraTb_Roletouser == null) throw new ArgumentNullException("paraTb_Roletouser"); try { var oldEntity = (from p in _context.tb_RoleToUser where p.RoleUserId == paraTb_Roletouser.RoleUserId select p).FirstOrDefault(); if (oldEntity == null) { return false; } else { _context.ApplyCurrentValues(oldEntity.GetType().Name, paraTb_Roletouser); _context.SaveChanges(); return true; } } catch (Exception ex) { throw ex; } }
/// <summary> /// 创建新的 tb_RoleToUser 对象。 /// </summary> /// <param name="roleUserId">RoleUserId 属性的初始值。</param> public static tb_RoleToUser Createtb_RoleToUser(global::System.Int32 roleUserId) { tb_RoleToUser tb_RoleToUser = new tb_RoleToUser(); tb_RoleToUser.RoleUserId = roleUserId; return tb_RoleToUser; }