DataTable转换为实体对象的通用方法

实体类Employee：

   public class Employee
    {
        public int EId { get; set; }
        public string EName { get; set; }
        public bool ESex { get; set; }
    }

实体类Department：

    public class Department
    {
        public int DId { get; set; }
        public string DName { get; set; }
    }

目标：使用一个方法，能将DataTable中的Employee、Department数据，转换为Employee、Department集合。

 

{
    class Program
    {
        private static DataTable employeeDT = new DataTable();
        private static DataTable departmentDT = new DataTable();

        static void Main(string[] args)
        {
            InitTable();

            List eList = GetEntityFromDataTable(employeeDT);
            foreach (Employee e in eList)
            {
                Console.WriteLine("编号：{0} 部门：{1} 男：{2}",e.EId,e.EName,e.ESex);
            }

            List dList = GetEntityFromDataTable(departmentDT);
            foreach (Department d in dList)
            {
                Console.WriteLine("编号：{0} 部门{1}", d.DId, d.DName);
            }

            Console.ReadKey();
        }

        /// 

        /// 初始化 员工、部门表的内容
        /// 
        public static void InitTable()
        {
            employeeDT.Columns.Add("Eid",typeof(Int32));
            employeeDT.Columns.Add("EName",typeof(string));
            employeeDT.Columns.Add("ESex",typeof(bool));
            DataRow dRow = employeeDT.NewRow();
            dRow["Eid"] = 1;
            dRow["EName"] = "小张";
            dRow["ESex"] = true; //男
            employeeDT.Rows.Add(dRow);
            employeeDT.Rows.Add(new object[] {2,"小王",false});
            employeeDT.Rows.Add(new object[] { 3, "小李",true });


            departmentDT.Columns.Add("DId",typeof(Int32));
            departmentDT.Columns.Add("DName",typeof(string));
            departmentDT.Rows.Add(new object[] { 1, "硬件组" });
            departmentDT.Rows.Add(new object[] { 2, "软件组" });
            
        }

        //public static List GetEntityFromDataTable(DataTable sourceDT)
        //{
        //    List list = new List();

        //    foreach (DataRow dRow in sourceDT.Rows)
        //    {
        //        Employee e = new Employee();
        //        e.EId = Convert.ToInt32(dRow["EId"]);
        //        e.EName = dRow["EName"].ToString();
        //        list.Add(e);
        //    }

        //    return list;
        //}

        /// 

        /// 将DataTable转为实体对象
        /// 
        /// 目标类型
        /// 原DT
        /// 转换后的实体列表
        public static List GetEntityFromDataTable(DataTable sourceDT) where T:class
        {
            List list = new List();
            // 获取需要转换的目标类型
            Type type = typeof(T);
            foreach (DataRow dRow in sourceDT.Rows)
            {
                // 实体化目标类型对象
                object obj = Activator.CreateInstance(type);
                foreach( var prop in type.GetProperties())
                {
                    // 给目标类型对象的各个属性值赋值
                    prop.SetValue(obj, dRow[prop.Name],null); 
                }
                list.Add(obj as T) ;
            }
            return list;
        }
    }
}

目标方法GetEntityFromDataTable，使用泛型指定待转换的对象类型，并将指定数据的DataTable作为参数传递，返回转换后的对象集合。