Question

How can I take a List and order it by random?

List< Testimonial > testimonials = new List< Testimonial >();
testimonials.Add(new Testimonial {1} ); 
testimonials.Add(new Testimonial {2} );
testimonials.Add(new Testimonial {2} ); 
testimonials.Add(new Testimonial {3} );
testimonials.Add(new Testimonial {4} );

How would I use

testimonials.OrderBy<>

in order to make it random?

Answer 1

Here is the solution for that.

public static List<T> RandomizeGenericList<T>(IList<T> originalList)
{
    List<T> randomList = new List<T>();
    Random random = new Random();
    T value = default(T);

    //now loop through all the values in the list
    while (originalList.Count() > 0)
    {
        //pick a random item from th original list
        var nextIndex = random.Next(0, originalList.Count());
        //get the value for that random index
        value = originalList[nextIndex];
        //add item to the new randomized list
        randomList.Add(value);
        //remove value from original list (prevents
        //getting duplicates
        originalList.RemoveAt(nextIndex);
    }

    //return the randomized list
    return randomList;
}

Source Link: http://www.dreamincode.net/code/snippet4233.htm

This Method will randomize any Generic list in C#