c#怎么读取mysql中 mediumtext类型的数据

Question

如题：
MySQLConnection con = new MySQLConnection( new MySQLConnectionString("localhost","beephpcms","root","root").AsString);
            try
            {
                DataSet ds = new DataSet();
                con.Open();
                MySQLCommand cmd = new MySQLCommand("set names 'gb2312'", con);
                cmd.ExecuteNonQuery();
                MySQLCommand com = new MySQLCommand("select contentid as id,content from phpcms_c_news where content like '%news_%html%'", con);
                MySQLDataReader mydr = com.ExecuteReaderEx();
                while (mydr.Read())
                {
                    string content = "";
                    string id = "";
                    id = mydr["id"].ToString();
                    content=mydr["content"].ToString();//此行报错，content是mediumtext类型数据
                 }
                mydr.Close();
                con.Close();
                
            }
            catch (Exception error)
            {
                MessageBox.Show(error.Message);
            }请指点如何读取mediumtext类型数据

Answer 1

 string content = "";mediumtext 其实本质上是BLOB， 所以用 byte[]

Answer 2

 string content = "";
改成
 byte[] content