convert php code to c# trying make program convert myisam db to innodb -

i'm trying make app convert myisam innodb

if found php script code

<?php     // connect database here first      //       // actual code starts here       $sql = "select table_name information_schema.tables         table_schema = 'your_database_name'          , engine = 'myisam'";      $rs = mysql_query($sql);      while($row = mysql_fetch_array($rs))     {         $tbl = $row[0];         $sql = "alter table `$tbl` engine=innodb";         mysql_query($sql);     } ?> 

then try make iin c#

public static void updatedb()         {             using (var cnn = new mysqlconnection(con))             {                 cnn.open();                 using (var cmd = new mysqlcommand("select table_name information_schema.tables table_schema = '" + db + "' , engine = 'myisam'", cnn))                 {                     using (var reader = cmd.executereader())                     {                         while (reader.read())                         {                          }                        }                 }             }         } 

and can't understand codes mean

$tbl = $row[0]; $sql = "alter table `$tbl` engine=innodb"; mysql_query($sql); 

i tried , failed can 1 me

thanks