TreeView控件的使用，利用TreeView控件管理数据显示，并有添加节点，编辑节点和删除节点的功能-TreeView control of the use, exploitation TreeView control management data, and to add nodes, edit and delete nodes Node functions
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001169s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.074014s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001037s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001117s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000966s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003064s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000857s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.003709s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.014634s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001267s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 68394 [ RunTime:0.020777s ]
