SqlConnection conn = new SqlConnection();
            conn.ConnectionString = @"server=LISHILIANG\SQLEXPRESS;database=郑州公交查询;uid=test;pwd=test";
            //conn.Open();aaaaaaaaa
            SqlDataAdapter da = new SqlDataAdapter("SELECT * from 公交路线表", conn);
            DataSet ds = new DataSet();
            da.Fill(ds);
            dataGridView1.DataSource = ds.Tables[0].DefaultView;
出现了拒绝对对象数据库表的SELECT的权限