我们可以调用2次response.redirect来打开不同网址的不同页面吗？

Question

我正在开发c＃程序，即将在2个标签中显示2个报告（水晶报告）。为此我尝试了response.redirect，但它只适用于第一个response.redirect。它不会进入第二个response.redirect ...有谁知道如何解决这个问题？这是我的代码：

                    if (Request.QueryString["ProcessName"].ToString().Equals("MyBill"))
                {
                    using (SqlCommand cmd = new SqlCommand("MyBill", con))
                    {
                        cmd.CommandType = CommandType.StoredProcedure;

                        cmd.CommandTimeout = 6000;
                        cmd.Parameters.Add("@id", SqlDbType.Int);
                        cmd.Parameters["@id"].Value = Request.QueryString["id"];

                        cmd.Parameters.Add("@billamount", SqlDbType.Int);
                        cmd.Parameters["@billamount"].Value = Request.QueryString["billamount"];

                        cmd.Parameters.Add("@p_displaydocno", SqlDbType.VarChar, 100).Direction = ParameterDirection.Output;
                        cmd.Parameters.Add("@p_billno_out", SqlDbType.VarChar, 50).Direction = ParameterDirection.Output;

                        con.Open();
                        cmd.ExecuteNonQuery();

                        //Print Bill
                        string ReportName = "Bill_New.rpt";
                        string billid = null;

                        string piping = Convert.ToString(cmd.Parameters["@p_billno_out"].Value);
                        string audit_no = string.Empty;

                        string[] strArr = null;
                        char[] splitchar = { '|' };
                        strArr = piping.Split(splitchar);
                        audit_no = strArr[0].Trim();
                        billid = strArr[1].Trim();
                        auditno = Convert.ToInt32(audit_no);

                        string URL = "./Reports/Reports.aspx?ReportName=" + ReportName +  "&billid=" + billid;
                        Response.Redirect(URL);

                        //Print Receipt
                        string ReportName2 = "Receipt.rpt";
                        string DocNoFrom = null;
                        string DocNoTo = null;

                        DocNoFrom = Convert.ToString(cmd.Parameters["@p_displaydocno"].Value);
                        DocNoTo = Convert.ToString(cmd.Parameters["@p_displaydocno"].Value);

                        string URL2 = "./Reports/Reports.aspx?ReportName=" + ReportName2 + "&DocNoFrom=" + DocNoFrom + "&DocNoTo=" + DocNoTo;
                        Response.Redirect(URL2);

                        Cursor.Current = Cursors.AppStarting;
                    }

                    con.Close();
                }

编辑：然后我尝试使用javascript替换response.redirect，是的，它会打开2个标签，但会出现此错误

Response.Write("<script>window.open(URL, '_blank');</script>");
Response.Write("<script>window.open(URL2, '_blank');</script>");

error 1 error 2