Question

Im trying to sort a listbox full of numbers numerically. Why doesnt this work?

        {
            ArrayList Sorting = new ArrayList();
            Sorting.Add (lbNumbers.Text);
            int[] items = new int[Sorting.Count];
            Sorting.CopyTo(items);
            Array.Sort(items);
            lbNumbers.Items.Add(items);

        }

Answer 1

ArrayList Sorting = new ArrayList(); 

foreach (var o in listBox1.Items) {
    Sorting.Add(o);
} 

Sorting.Sort(); 

listBox1.Items.Clear();

foreach (var o in Sorting) {
    listBox1.Items.Add(o); 
}

ADDED: For sort in descending order,

1.Create a class ReverseSort as shown below:

// implementation:
public class ReverseSort : IComparer
{
    public int Compare(object x, object y)
    {
        // reverse the arguments
        return Comparer.Default.Compare(y, x);
    }    
}

2.Replace the code line of Sort with this line:

Sorting.Sort(new ReverseSort());