C# Select Random ListBox Item, Random Not Random-ing

private void whatever()
        {
            Random rnd2 = new Random();

            int i = listBox1.Items.Count - 1;

            int chosenItem = rnd2.Next(i);

            listBox1.SelectedIndex = i;


            label1.Text = "Choices Are: " + listBox1.SelectedItem.ToString();
        }

For whatever reason this always selects the same item from the listbox, and I'm not an expert at randoms yet.  Right now it's called from a button.click(), only works once per load, and as stated, always picks the last item in the listbox.  The above is what I managed to convert from a VB article on it.

Can someone help me mod this up a bit?  I want it to pick a random item from the list every time I click the button.  There are some articles on it, most of them far too cluttered to be any help, and most of them not quite this.

Thanks in advance!

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