mysql Access denied for user 'root'@'localhost' (using password: YES)

【现象说明】

C/S程序远程访问正常，本地访问报以下异常

MySql.Data.MySqlClient.MySqlException (0x80004005): Authentication to host 'localhost' for user 'root' using method 'mysql_native_password' failed with message: Access denied for user 'root'@'localhost' (using password: YES) ---> MySql.Data.MySqlClient.MySqlException (0x80004005): Access denied for user 'root'@'localhost' (using password: YES)MySql.Data.