[code=csharp]
public static void Shuffle<T>(this IList<T> list)
{
    var rnd = new Random();
    
    for (int i = list.Count - 1; i >= 0; i--)
    {
        var r = rnd.Next(i + 1);
        T value = list[r];
        list[r] = list[i];
        list[i] = value;
    }
}

Voorbeeld gebruik:

[code=csharp]
//Array met integers
var numbers = new int[3] { 1, 2, 3 };
numbers.Shuffle();

//Lijst met anonymous objects
var items = new []
{
    new { Code = 1, StringVal = "1" },
    new { Code = 2, StringVal = "2" },
    new { Code = 3, StringVal = "3" },
    new { Code = 4, StringVal = "4" }
};
items.Shuffle();