Use ‘get’ form action within a WordPress plugin admin page

Try to use this code,

<form action="http://www.mydomain.com/wp-admin/admin.php" method="get">
<input type="hidden" name="page" value="my-plugin.php" />
<input type="text" class="mydatepicker" name="start_date" value=""/>
<input type="submit" value="submit">
</form>

This will show the url like this…

http://www.mydomain.com/wp-admin/admin.php?page=my-plugin.php&start_date=2014-04-03

Check and let me know your comments, if it works

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)