protected virtual void OnNodeCollapsing(CollapsingEventArgs e)
{
if (this.NodeCollapsing != null)
{
this.NodeCollapsing(this, e);
}
}
protected internal virtual bool CollapseNode(TreeGridNode node)
{
if (node.IsExpanded)
{
CollapsingEventArgs e = new CollapsingEventArgs(node);
this.OnNodeCollapsing(e);
if (!e.Cancel)
{
this.LockVerticalScrollBarUpdate(true);
base.SuspendLayout();
this._inExpandCollapse = true;
node.IsExpanded = false;
foreach (TreeGridNode node2 in node.Nodes)
{
this.UnSiteNode(node2);
}
CollapsedEventArgs args2 = new CollapsedEventArgs(node);
this.OnNodeCollapsed(args2);
this._inExpandCollapse = false;
this.LockVerticalScrollBarUpdate(false);
base.ResumeLayout(true);
}
return(!e.Cancel);
}
return(false);
}
