MyGeneration 的mysql的connection string:
Provider=MySqlProv;Data Source=XXX;Integrated Security=;User ID=root;Password=password;
我找来找去都找不到MysqlProv，以为这个是mysql oledb provider
但最后在http://community.entityspaces.net/forums/thread/3520.aspx发现
要先安装 Database=test;Data Source=localhost;User Id=root;Password=pwd;
OK