using System;
using System.Linq;

public class Data {
    public string param1;
    public string param2;
}


public class Test
{
    static Data[] data;
    static Data[] data_sort;
	public static void Main()
	{
        data = new Data[2];
        data[0] = new Data();
        data[0].param2 = "2";
        data[1] = new Data();
        data[1].param2 = "1";
        data_sort = data.OrderBy (t=>int.Parse (t.param2??"0")).ToArray ();
        foreach (Data d in data_sort) {
    	    Console.WriteLine(d.param2);
        }
    }
}