Entity Framework（3）新增

来源：互联网发布：网易房产数据编辑：程序博客网时间：2024/06/07 01:11

        #region 新增        /// <summary>        /// 添加一条数据        /// </summary>        /// <param name="model">添加的对象</param>        /// <returns>影响行数</returns>        public int InsertByModel(T model)        {            db.Set<T>().Add(model);            return db.SaveChanges();        }        /// <summary>        /// 添加多条数据        /// </summary>        /// <param name="modelList">添加的对象的集合</param>        /// <returns>影响行数</returns>        public int InsertByList(List<T> modelList)        {            db.Set<T>().AddRange(modelList);            return db.SaveChanges();        }        #endregion

新增是最简单的，EF已经帮我们封装好了添加一个对象，以及一个集合的方法

接下来让我i们才测试一下

   static void Main(string[] args)        {            try            {                MT5RiskManagementEntities mt5 = new MT5RiskManagementEntities();                EntityFramework<User> ef = new EntityFramework<User>(mt5);                int count = 0;                count = ef.InsertByModel(new User() { name = "马云", age = 53 });                Console.WriteLine(string.Format("新增了{0}条数据", count));                Console.ReadKey();            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);                Console.ReadKey();            }        }

 static void Main(string[] args)        {            try            {                MT5RiskManagementEntities mt5 = new MT5RiskManagementEntities();                EntityFramework<User> ef = new EntityFramework<User>(mt5);                int count = 0;                List<User> users = new List<User>();                for (int i = 0; i < 100; i++)                {                    users.Add(new User() { name = "测试" + i.ToString("D5"), age = 20 + i % 5 });                }                count = ef.InsertByList(users);                Console.WriteLine(string.Format("新增了{0}条数据", count));                Console.ReadKey();            }            catch (Exception ex)            {                Console.WriteLine(ex.Message);                Console.ReadKey();            }        }

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