Display Selected Items From The Listbox

protected void Button1_Click(object sender, EventArgs e)
{
        //Here You Have To Clear Label Before Append New Values....
        SelectedListLabel.Text = "";
        foreach(int i in ListBox1.GetSelectedIndices())
        {
                 //It Will Just Display Your Selected Values In The Label.....
                 SelectedListLabel.Text += ListBox1.Items[i].Value + ", ";
        }
}