List<T>からDataTable型へ変換する

ListToDataTable.cs

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Text;
using System.Reflection;
namespace ListToDataTable
{
    class Program
    {
        static void Main(string[] args)
        {
            var l = new List<Sample>();
            l.Add(new Sample(1, "yaamda"));
            l.Add(new Sample(2, "kameya"));


            var table = CvtTable(l);

            foreach (DataRow r in table.Rows)
            {
                foreach(DataColumn c in table.Columns)
                {
                    Console.Write("{0},", r[c]); 
                }
            }

            Console.ReadKey();
        }

        private static DataTable CvtTable(List<Sample> samples)
        {
            var table = new DataTable();
            var target = samples.GetType().GetGenericArguments()[0];

            foreach (var p in target.GetProperties())
            {
                table.Columns.Add(p.Name, p.PropertyType);
            }

            foreach (Sample l in samples)
            {
                var row = table.NewRow();

                for (int i = 0; i < table.Columns.Count; i++)
                {
                    var prop = l.GetType().GetProperties()[i];
                    row[i] = prop.GetValue(l, null);
                }
                table.Rows.Add(row);
            }

            return table;
        }
    }

    public class Sample
    {
        public Sample(int id, string name)
        {
            this.ID =id;
            this.Name = name;
        }

        public int ID { get; set; }

        public string Name { get; set; }
    }
}