internal virtual bool ExpandNode(TreeGridNode node)
{
if (node.IsExpanded && !this.VirtualNodes)
{
return(false);
}
ExpandingEventArgs e = new ExpandingEventArgs(node);
this.OnNodeExpanding(e);
if (!e.Cancel)
{
this.LockVerticalScrollBarUpdate(true);
base.SuspendLayout();
this._inExpandCollapse = true;
node.IsExpanded = true;
foreach (TreeGridNode node2 in node.Nodes)
{
this.SiteNode(node2);
}
this.OnNodeExpanded(node);
this._inExpandCollapse = false;
this.LockVerticalScrollBarUpdate(false);
base.ResumeLayout(true);
base.InvalidateCell(node.Cells[0]);
}
return(!e.Cancel);
}
private void OnNodeExpanding(ExpandingEventArgs e)
{
this.NodeExpanding?.Invoke(this, e);
}
