ListView快速显示100万条数据用时1秒

[{"title":"（10个子文件206KB）ListView快速显示100万条数据用时1秒","children":[{"title":"Unit1.dfm <span style='color:#111;'>1.55KB</span>","children":null,"spread":false},{"title":"Project1.exe <span style='color:#111;'>482.00KB</span>","children":null,"spread":false},{"title":"Unit1.pas <span style='color:#111;'>1.91KB</span>","children":null,"spread":false},{"title":"Unit1.dcu <span style='color:#111;'>5.82KB</span>","children":null,"spread":false},{"title":"Project1.res <span style='color:#111;'>876B</span>","children":null,"spread":false},{"title":"Unit1.~dfm <span style='color:#111;'>1.49KB</span>","children":null,"spread":false},{"title":"Unit1.~pas <span style='color:#111;'>1.91KB</span>","children":null,"spread":false},{"title":"Project1.dof <span style='color:#111;'>1.97KB</span>","children":null,"spread":false},{"title":"Project1.dpr <span style='color:#111;'>188B</span>","children":null,"spread":false},{"title":"Project1.cfg <span style='color:#111;'>434B</span>","children":null,"spread":false}],"spread":true}]