User-ordered list

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Text;

using System.Windows.Forms;

namespace DraggableListBox

public partial class DraggableListBoxComponent : ListBox

public DraggableListBoxComponent()

InitializeComponent();

protected override void OnPaint(PaintEventArgs pe)

// TODO: Add custom paint code here

// Calling the base class OnPaint

base.OnPaint(pe);

private string _dragData = "";

private int _selectedDragItemIndex = -1;

private void DraggableListBox_DragEnter(object sender, DragEventArgs e)

if (e.Data.GetDataPresent(DataFormats.Text, true))

e.Effect = DragDropEffects.All;

private void DraggableListBox_DragDrop(object sender, DragEventArgs e)

Point p = this.PointToClient(new Point(e.X, e.Y));

int index = this.IndexFromPoint(p);

if (index >= 0)
{
   Items.RemoveAt(_selectedDragItemIndex);
   Items.Insert(index, _dragData);
 }

private void DraggableListBoxComponent_SelectedIndexChanged(object sender, EventArgs e)

private void DraggableListBoxComponent_MouseDown(object sender, MouseEventArgs e)

_selectedDragItemIndex = this.IndexFromPoint(e.X, e.Y);

if (_selectedDragItemIndex >= 0)

_dragData = (string)Items[_selectedDragItemIndex];

this.DoDragDrop(Items[this.SelectedIndex].ToString(), DragDropEffects.Move);