數據訪問類代碼模塊收集
阿新 • • 發佈：2017-12-28
代碼 () sql lis sel int 分類 body pan
1、獲取分類
1 /// <summary> 2 /// 獲取菜品分類 3 /// </summary> 4 /// <returns></returns> 5 public List<DishCategroy> GetAllCategory() 6 { 7 string sql = "select CategoryId,CategoryName from DishCategory"; 8 List<DishCategroy> list = newList<DishCategroy>(); 9 SqlDataReader objReader = SQLHelper.GetReader(sql); 10 while (objReader.Read()) 11 { 12 list.Add(new DishCategroy() 13 { 14 CategoryId = Convert.ToInt32(objReader["CategoryId"]), 15 CategoryName = objReader["CategoryName"].ToString().Trim() 16 }); 17 } 18 objReader.Close(); 19 return list; 20 }
2、新增菜品（返回新增菜品ID號）
1 /// <summary> 2 /// 新增菜品（返回新增菜品ID號） 3 /// </summary> 4 /// <param name="objDish"></param> 5 ///<returns></returns> 6 public int AddDish(Dish objDish) 7 { 8 string sql = "insert into Dishes(DishName,UnitPrice,CategoryId)"; 9 sql += " values(@DishName,@UnitPrice,@CategoryId);select @@identity"; 10 SqlParameter[] param = new SqlParameter[] 11 { 12 new SqlParameter("@DishName",objDish.DishName), 13 new SqlParameter("@UnitPrice",objDish.UnitPrice), 14 new SqlParameter("@CategoryId",objDish.CategoryId) 15 }; 16 return Convert.ToInt32(SQLHelper.GetSingleResult(sql,param)); //返回自增號 17 }
3、根據菜品編號獲取菜品對象
1 /// <summary> 2 /// 根據菜品編號獲取菜品對象 3 /// </summary> 4 /// <param name="dishId"></param> 5 /// <returns></returns> 6 public Dish GetDishById(string dishId) 7 { 8 string sql="select DishName,UnitPrice,CategoryId from Dish where DishId=@DishId"; 9 SqlParameter[] param=new SqlParameter[] 10 { 11 new SqlParameter("@DishId",dishId), 12 }; 13 Dish objDish=null; 14 SqlDataReader objReader=SQLHelper.GetReader(sql,param); 15 if(objReader.Read()) 16 { 17 objDish=new Dish() 18 { 19 DishId=Convert.ToInt32(objReader["DishId"]), 20 CategoryName=objReader["CategoryName"].ToString(), 21 CategoryId=Convert.ToInt32(objReader["CategoryId"]), 22 DishName=objReader["DishName"].ToString(), 23 UnitPrice=Convert.ToInt32(objReader["UnitPrice"]) 24 }; 25 } 26 objReader.Close(); 27 return objDish; 28 } 29 }
數據訪問類代碼模塊收集