/// <summary>
/// Collapses the item to hide any child items.
/// </summary>
public void Collapse()
{
if (!_expanded)
{
return;
}
if (_listView != null)
{
TreeListViewCancelEventArgs e = new TreeListViewCancelEventArgs(null, this);
_listView.OnItemCollapsing(e);
if (e.Cancel)
{
return;
}
}
_expanded = false;
if (_items != null && _items.Count > 0)
{
_listView.RecalculateItemPositions(this);
}
else
{
_listView.Invalidate();
}
if (_listView != null)
{
_listView.OnItemCollapsed(new TreeListViewEventArgs(null, this));
}
}