Question

I have a List

I would like to re-order it so so they are in random order.

What’s the quickest way to do this (by quickest, I mean least amount of code)

Answer 1

If you want to randomly re-order in place you should shuffle the list, usage with an extension method is then a simple one-liner. This assumes you already have an IList based collection.

Usage: myList.Shuffle();

public static void Shuffle<T>(this IList<T> list)  
{  
    Random rng = new Random();  
    int n = list.Count;  
    while (n > 1) 
    {  
        n--;  
        int k = rng.Next(n + 1);  
        T value = list[k];  
        list[k] = list[n];  
        list[n] = value;  
    }  
}

Credit goes to this answer: Randomize a List<T>