Drag And Drop Functionality for ListBox

This code implements drag and drop functionality to listbox

        private void listBox1_DragEnter(object sender, DragEventArgs e)

        {

            if (e.Data.GetDataPresent(DataFormats.FileDrop))

            e.Effects = DragDropEffects.Copy;

        }

        private void listBox1_Drop(object sender, DragEventArgs e)

        {

            string[] files = (string[])e.Data.GetData(DataFormats.FileDrop);

            foreach (string file in files)

            {

                listBox1.Items.Add(file);

            }

        }