using System;
using System.Collections.Generic;
using System.Reflection;

public class Test
{
	interface Col
	{
		String Get(Object o);
		void Set(Object o, String s);
	}
	class IntCol : Col
	{
		FieldInfo f;
		public IntCol(FieldInfo f)
		{
			this.f = f;
		}
		public String Get(Object o) { return "" + f.GetValue(o); }
		public void Set(Object o, String s) { f.SetValue(o, int.Parse(s)); }
	}
	static Col ToCol(Type t, String name)
	{
		FieldInfo f = t.GetField(name);
		if (f.FieldType == typeof(int)) { return new IntCol(f); }
		throw new Exception("" + t);
	}
	class Table<T> where T : class
	{
		public List<Col> cols = new List<Col>();
		public List<T> rows = new List<T>();

		public String Get(int row, int col) { return cols[col].Get(rows[row]); }
		public void Set(int row, int col, String s) { cols[col].Set(rows[row], s); }

		public void AddField(String name) { cols.Add(ToCol(typeof(T), name)); }
		public void Add(T o) { rows.Add(o); }
	}
	
	class Entry
	{
		public int num1;
		public int num2;
		public Entry(int n1, int n2) { num1 = n1; num2 = n2; }
	}
	public static void Main()
	{
		Table<Entry> t = new Table<Entry>();
		t.AddField("num1");
		t.AddField("num2");

		t.Add(new Entry(1, 2));
		t.Add(new Entry(10, 20));

		t.Set(1, 1, "300");

		foreach (Entry e in t.rows)
		{
			foreach (Col c in t.cols)
			{
				Console.Write(c.Get(e) + " ");
			}
			Console.WriteLine();
		}
	}
}