bootstrap treeview的使用问题？

Question

bootstrap treeview的使用问题

Answer 1

treeview1.selected.Expand(True);//子节点treeview1.selected.collapse(True)://子节点闭拢树节点全部：procedureTForm1.Button1Click(Sender:TObject);varnode:TTreeNode;beginiftreeview1.Items[0]<nilthenbeginnode:=treeview1.Items[0];node.Expand(true);whilenode.getNextSibling<nildobeginnode:=node.getNextSibling;node.Expand(true);end;end;end;树节点全部收缩