protected void Button1_Click(object sender, EventArgs e)

        {

            //    string postfix = string.Empty;

            //    string fileType = string.Empty;

            //    postfix = ef[4, 1];

            //    fileType = ef[4, 2];

            string [,]aa =new string[,]{

{"aa","BB","CC","dd"}};

            DataTable dt = new DataTable();

            dt.Columns.Add("ID", typeof(int));

            dt.Columns.Add("Name", typeof(string));

            dt.Columns.Add("Sex", typeof(string));

            dt.Columns.Add("Age", typeof(int));

            dt.Columns["ID"].AutoIncrement = true;

            for (int i = 0; i < 10; i++)

            {

                DataRow dr = dt.NewRow();

                dr["Name"] = "Martin" + i;

                dr["Sex"] = "男";

                dr["Age"] = i;

                dt.Rows.Add(dr);

            }

            List<PeopleEntity> list = ConvertHelper<PeopleEntity>.ConvertToList(dt);

        }

 

 class ConvertHelper<T> where T : new()

    {

        /// <summary>

        /// 利用反射和泛型

        /// </summary>

        /// <param name="dt"></param>

        /// <returns></returns>

        public static List<T> ConvertToList(DataTable dt)

        {

            // 定义集合

            List<T> ts = new List<T>();

            // 获得此模型的类型

            Type type = typeof(T);

            //定义一个临时变量

            string tempName = string.Empty;

            //遍历DataTable中所有的数据行

            foreach (DataRow dr in dt.Rows)

            {

                T t = new T();

                // 获得此模型的公共属性

                PropertyInfo[] propertys = t.GetType().GetProperties();

                //遍历该对象的所有属性

                foreach (PropertyInfo pi in propertys)

                {

                    tempName = pi.Name;//将属性名称赋值给临时变量

                    //检查DataTable是否包含此列（列名==对象的属性名） 

                    if (dt.Columns.Contains(tempName))

                    {

                        // 判断此属性是否有Setter

                        if (!pi.CanWrite) continue;//该属性不可写，直接跳出

                        //取值

                        object value = dr[tempName];

                        //如果非空，则赋给对象的属性

                        if (value != DBNull.Value)

                            pi.SetValue(t, value, null);

                    }

                }

                //对象添加到泛型集合中

                ts.Add(t);

            }

            return ts;

        }

    }