Request.QueryString["XueKe"]......

OleDbConnection conn = new OleDbConnection("数据库连接字符串");
        conn.Open();
        OleDbCommand cmd = new OleDbCommand("", conn);
        string[] chengji = Request.Form["chengji"].Split(',');
        string[] XueKe = Request.Form["XueKe"].Split(',');
        string[] DanYuan = Request.Form["DanYuan"].Split(',');
        try
        {
            for (int i = 0; i < chengji.Length; i++)
            {
                if (string.IsNullOrEmpty(chengji[i]))
                {
                    chengji[i] = "0";
                }
                //若成绩在数据表中是字符型字段的话，下面的语句改成
                //cmd.CommandText = "insert into 数据表 (chenji,xueke,danyuan) values('" + chengji[i] + "','" + XueKe[i] + "','" + DanYuan[i] + "')";
                cmd.CommandText = "insert into 数据表 (chenji,xueke,danyuan) values(" + chengji[i] + ",'" + XueKe[i] + "','" + DanYuan[i] + "')";
                cmd.ExecuteNonQuery();
            }
        }
        catch
        {
            Response.Write("数据插入出错");
        }
        finally
        {
            conn.Close();
        }