Randomize

public static void Randomize<t>(this IList<t> target)
{
 Random RndNumberGenerator = new Random();
 SortedList<int, t> newList = new SortedList<int, t>();
 foreach (t item in target)
 {
 newList.Add(RndNumberGenerator.Next(), item);
 }
 target.Clear();
 for (int i = 0; i < newList.Count; i++)
 {
 target.Add(newList.Values[i]);
 }
}

List<int> intList = new List<int>();
 intList.Add(1);
 intList.Add(2);
 intList.Add(3);
 intList.Add(4);
 intList.Add(5);
intList.Randomize(); // this will randomize the items in the list