自定义的DatagridView控件，提供了常见的几种常见操作的自定义函数。
主要函数
GetValue：获取指定行和列的Cell Value
SetValue：设置指定行和列的Cell Value
-DatagridView custom controls, provides a common operation of some common self-defined function. The main function GetValue: access to the specified rows and columns of the Cell Value SetValue: Set the specified rows and columns of the Cell Value
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001120s ]
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:0.069033s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.000989s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.001296s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000940s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003168s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000737s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.004503s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.028268s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002003s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 129359 [ RunTime:0.015456s ]
