dataGridView 控件中如何显示数据库表

string strconn = "provider=microsoft.jet.oledb.4.0;data source=./财务软件.mdb";
            OleDbConnection conn = new OleDbConnection(strconn);
            conn.Open();
            string strcmd = "select * from 支出表 ";
            OleDbCommand cmd = new OleDbCommand(strcmd, conn);

            OleDbDataAdapter adp = new OleDbDataAdapter(cmd);
            DataSet ds = new DataSet();
            adp.Fill(ds, "nr");
            dataGridView2.DataSource = ds.Tables["nr"].DefaultView;
           conn.Close();