C# oledb方式连接mysql 查询报错

[Eossoft-2020]

代码如下：

      private void button14_Click(object sender, EventArgs e)
        {
            OleDbConnection myconn = new OleDbConnection("Server=192.168.0.217;Database=kfbdata;user id=eos;password=eossoft;port=3306;Provider=MySqlProv;Character Set=gb2312");
            myconn.Open();
            string CommandText = "select * from stusers";
            DataSet ds = new DataSet();
            OleDbDataAdapter myreader = new OleDbDataAdapter(CommandText, myconn);
            myreader.Fill(ds, "hard");
            dataGridView2.DataSource = ds.Tables["hard"];
        }

执行 myreader.Fill(ds, "hard");的时候报错：‘MySqlProv”失败，没有可用的错误消息，结果代码: DB_E_ERRORSINCOMMAND(0x80040E14)。
是什么原因？

[道玄希言]

// OLE DB, OleDbConnection (.NET) "Data Source=server;Database=mydb;User ID=username;Password=pwd;Command Logging=false" C#: using eInfoDesigns.dbProvider.MySqlClient; MySqlConnection oMySqlConn = new MySqlConnection(); oMySqlConn.ConnectionString = "my connectionstring"; oMySqlConn.Open();