using System;
using System.Collections.Generic;
 
namespace ConsoleApplication5
{
    class Program
    {
        static void Main()
        {
 
 
            var List1 = new List<int>();
            var List2 = new List<int>();
            for (var i = 0; i < 10; ++i)
            {
            	// If you instantiate the Random(int) member in rapid succession
            	// AND you seed it with the HashCode of a Guid, the liklihood
            	// of dupliate numbers is greatly reduced
            	// (notice I said reduced and NOT eliminated.)
            	var rand = new Random(Guid.NewGuid().GetHashCode());
                List1.Add(rand.Next());
                List2.Add(rand.Next());
            }
 
            for(var i = 0; i < 10; ++i)
            {
            	var l1 = List1[i].ToString();
            	var l2 = List2[i].ToString();
            	Console.WriteLine(string.Format("List1 Value: {0}, List2 Value: {1}", l1, l2));
            }
 
        }
    }
}
 

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