+--------------------------+----------------------------+
| character_set_client     | latin1                     | 
| character_set_connection | latin1                     | 
| character_set_database   | latin1                     | 
| character_set_filesystem | binary                     | 
| character_set_results    | latin1                     | 
| character_set_server     | latin1                     | 
| character_set_system     | utf8                       | 
| character_sets_dir       | /usr/share/mysql/charsets/ | 
+--------------------------+----------------------------+
public string latinTogbk(string str)
        {
            try
            {
                byte[] bytesStr = Encoding.GetEncoding("iso8859-1").GetBytes(str);
                return Encoding.GetEncoding("gb2312").GetString(bytesStr);
            }
            catch (Exception ex)
            {
                LOG.addlog("latinTogbk :" + ex.Message);
                return "<unknown>";
            }        }这样转换怎么还是乱码?