/// <summary>
/// Raises the <see cref="ItemDragging" /> event.
/// </summary>
/// <param name="e">The <see cref="CancelListViewItemDragEventArgs" /> instance containing the event data.</param>
protected virtual void OnItemDragging(CancelListViewItemDragEventArgs e)
{
EventHandler <CancelListViewItemDragEventArgs> handler;
handler = this.ItemDragging;
if (handler != null)
{
handler(this, e);
}
}
/// <summary>
/// Raises the <see cref="E:System.Windows.Forms.ListView.ItemDrag" /> event.
/// </summary>
/// <param name="e">An <see cref="T:System.Windows.Forms.ItemDragEventArgs" /> that contains the event data.</param>
protected override void OnItemDrag(ItemDragEventArgs e)
{
if (this.AllowItemDrag && this.Items.Count > 1)
{
CancelListViewItemDragEventArgs args;
args = new CancelListViewItemDragEventArgs((ListViewItem)e.Item);
Before = this.SelectedIndices[0];
this.OnItemDragging(args);
if (!args.Cancel)
{
this.IsRowDragInProgress = true;
this.DoDragDrop(e.Item, DragDropEffects.Move);
}
}
base.OnItemDrag(e);
}