Pop out a new page inside an update if statement

Please help i want to pop up a new page like a size of 350 by 400 pixel inside an update if statement.i was able to do this

"btnpopup" runat="server" BackColor="#0099FF" Font-Bold="True" ForeColor="White" Height="39px" onclick="btnpopup_Click"
onclientclick="return openPopup()" Text="Print Now" Width="135px" />
"text/javascript">
function openPopup() {
window.open("Reciept.aspx", "_blank", "WIDTH=350,HEIGHT=400, scrollbars=no, menubar=no,resizable=no,directories=no,location=no");
}

it worked but the page pops out before the update statement takes place ,so it displays the last record before the update statement took place

using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Data.SqlClient;
using System.Web.Configuration;
using System.Collections.Generic;
using System.Text;
using System.Globalization;
public partial class Nampak_Home : System.Web.UI.Page
{
string selectSQL, selectSQL1, selectSQL5, selectSQL6;
string updateSQL, updateSQL1, updateSQL5, updateSQL6, updateSQL2;
SqlCommand cmd = new SqlCommand();
SqlConnection dbConn = new SqlConnection();
SqlDataReader dr, ;
protected void Page_Load(object sender, EventArgs e)
{
selectSQL = "select * from List_Staff WHERE Emp_No ='" + Session["Emp"].ToString() + "'";
dbConn.ConnectionString = "Data Source=LAPTOP-VO\\SQLEXPRESS; Initial Catalog=Client;Integrated Security=True;";
cmd.Connection = dbConn;
cmd.CommandText = selectSQL;
cmd.CommandType = CommandType.Text;
try
{
dbConn.Open();
dr = cmd.ExecuteReader();
if (dr.Read())
{
Label1.Text = dr["Name"].ToString();
Session["L"] = dr["Name"].ToString();
Label2.Text = dr["Emp_No"].ToString();
Session["D"] = dr["Emp_No"].ToString();
Label3.Text = dr["Department"].ToString();
Session["J"] = dr["Department"].ToString();
Label4.Text = dr["Company"].ToString();
Session["E"] = dr["Company"].ToString();
Session["Value"] = dr["Value"].ToString();
Session["Cat"] = dr["Meal_Cat"].ToString();
Label5.Text = dr["Meal_Ticket"].ToString();
Session["Cv"] = dr["Meal_Ticket"].ToString();
int C = Convert.ToInt32(Session["Cv"]);
if (C < 1)
{
btnpopup.Enabled = false;
}
else
{
}
}
else
{
}
dr.Close();
}
catch (Exception err)
{
Label6.Text = "Error Logging in ";
Label6.Text += err.ToString();
}
finally
{
dbConn.Close();
}
}
protected void btnpopup_Click(object sender, EventArgs e)
{
string dt = DateTime.Now.ToString("dd.MM.yyyy HH:mm");
String.Format("{0:d/M/yyyy HH:mm}", dt);
Session["T"] = dt;
DateTime bt = System.DateTime.Now;
string format = "dd/MM/yyyy";
string newDate = bt.ToString(format);
Session["T1"] = newDate;
selectSQL = "select Meal_Ticket from List_Staff WHERE Emp_No ='" + Session["Emp"].ToString() + "'";
dbConn.ConnectionString = "Data Source=LAPTOP-VO\\SQLEXPRESS; Initial Catalog=Client;Integrated Security=True;";
cmd.Connection = dbConn;
cmd.CommandText = selectSQL;
cmd.CommandType = CommandType.Text;
try
{
dbConn.Open();
dr = cmd.ExecuteReader();
if (dr.Read())
{
Session["RT"] = dr["Meal_Ticket"].ToString();
int x = Convert.ToInt32(Session["RT"]);
int y = x - 1;
string t = y.ToString();
Session["TR"] = y.ToString();updateSQL = "update List_Staff set Meal_Ticket='" + y + "' where Emp_No ='" + Session["Emp"].ToString() + "'";
dbConn.ConnectionString = "Data Source=LAPTOP-VO\\SQLEXPRESS; Initial Catalog=Client;Integrated Security=True;";
cmd.Connection = dbConn;
cmd.CommandText = updateSQL;
cmd.CommandType = CommandType.Text;
try
{
dbConn.Open();
// Response.Write(updateSQL1);
int updated1 = cmd.ExecuteNonQuery();
if (updated1 == 1)
{
selectSQL = "select Value1 from Static WHERE id ='1'";
dbConn.ConnectionString = "Data Source=LAPTOP-VO\\SQLEXPRESS; Initial Catalog=Client;Integrated Security=True;";
cmd.Connection = dbConn;
cmd.CommandText = selectSQL;
cmd.CommandType = CommandType.Text;
try
{
dbConn.Open();
dr = cmd.ExecuteReader();
if (dr.Read())
{
Session["Val"] = dr5["Value1"].ToString();
int G = Convert.ToInt32(Session["Val"]);
int H = G + 1;
string j = H.ToString();
Session["V1"] = H.ToString();
updateSQL = "update Static set Value1='" + Session["V1"].ToString() + "' where id ='1'";
dbConn.ConnectionString = "Data Source=LAPTOP-VO\\SQLEXPRESS; Initial Catalog=Client;Integrated Security=True;";
cmd.Connection = dbConn;
cmd.CommandText = updateSQL;
cmd.CommandType = CommandType.Text;
try
{
dbConn.Open();
int updated2 = cmd.ExecuteNonQuery();
if (updated2 == 1)
{
String insertSQL9;
DateTimeFormatInfo dateFormatProvider = new DateTimeFormatInfo();
dateFormatProvider.ShortDatePattern = "0:d/M/yyyy HH:mm";
var tt = DateTime.Parse(Session["T"].ToString(), dateFormatProvider);
DateTimeFormatInfo dateFormatProvider1 = new DateTimeFormatInfo();
dateFormatProvider1.ShortDatePattern = "dd/MM/yyyy";
var tt1 = DateTime.Parse(Session["T1"].ToString(), dateFormatProvider);
insertSQL = "INSERT INTO MealLog (";
insertSQL += "Name,Emp_No,Meal_Cat,Department,Company,Reciept_No,Value,Time,Time1)";
insertSQL += "VALUES('";
insertSQL += Session["L"].ToString() + "','";
insertSQL += Session["D"].ToString() + "','";
insertSQL += Session["Cat"].ToString() + "','";
insertSQL += Session["J"].ToString() + "','";
insertSQL += Session["E"].ToString() + "','";
insertSQL += Session["V1"].ToString() + "','";
insertSQL += Session["Value"].ToString() + "','";
insertSQL += tt + "','";
insertSQL += tt1 + "')";
String connectionString = "Data Source=LAPTOP-VO\\SQLEXPRESS; Initial Catalog=Client;Integrated Security=True;";
SqlConnection con = new SqlConnection(connectionString);
SqlCommand cmd = new SqlCommand(insertSQL, con);
int added9 = 0;
try
{
con.Open();
added9 = cmd.ExecuteNonQuery();
if (added9 == 1)
{
//i want the page to pop out after this update is done.
//i want to pop up a new page like a size of 350 by 400 pixel after the update
}
else
{
// Response.Redirect("No.aspx");
}
// Label1.Text = added.ToString() + "records Inserted";
}
catch (Exception err)
{
Label6.Text += err.ToString();
}
finally
{
dbConn.Close();
}
}
else
{
// Response.Write("It happened");
}
}
catch (Exception err)
{
Label6.Text = "Error Updating ";
Label6.Text += err.ToString();
}
finally
{
dbConn6.Close();
}
}
else
{
}
dr.Close();
}
catch (Exception err)
{
Label6.Text = "Error Logging in 2 ";
Label6.Text += err.ToString();
}
finally
{
dbConn5.Close();
}
}
}
catch (Exception err)
{
Response.Write(err.ToString());
}
finally
{
dbConn.Close();
}
}
else
{
Label6.Text = "sorry you cant view this page ";
}
dr.Close();
}
catch (Exception err)
{
Label6.Text = "Error Logging in 3";
Label6.Text += err.ToString();
}
finally
{
dbConn.Close();
}
Response.Redirect(HttpContext.Current.Request.Path);
}
protected void LinkButton1_Click(object sender, EventArgs e)
{
Session.Remove("Emp");
Session["Emp"] = "";
}
}

Please help i want to pop up a new page like a size of 350 by 400 pixel inside the update if statement