protected internal void OnRowExpandedChanged(object sender, RowExpandedChangedEventArgs e)
{
if (e.Node == null)
return;
IGanttNode node = e.Node;
int index = Nodes.IndexOf(node);
if (node.Expanded)
InsertChildNodes(node, ref index);
else
RemoveChildNodes(node);
//Nodes.RaiseCollectionChanged();
RaiseRowExpandedChanged(e);
}
protected void RaiseRowExpandedChanged(RowExpandedChangedEventArgs e)
{
if (RowExpandedChanged != null)
RowExpandedChanged(this, e);
}