After click to print on toolpanel, response.redirect will not exit page!

Question

On the aspx page where in either the init or page load I execute the code for the report, it will display, and the toolpanel appears, and I can click the printer icon and the report will print.
It merrily reexeuctes the init and page load for every page in the report, which is insane, but from what I see searching Google, that is just the way it works.
I can live with that, but here is the real problem.
I have three buttons at top of page, each an http redirect to leave the page and go to another. I mean, I have to give the user a way out, right?
They will work if clicked on first entering the page before printing the report.
However, once you have clicked the icon in the Crystal toolpanel to print the report, YOU CANNOT ESCAPE THE PAGE! It will not go away.
I even put in code to trap the id of the control clicked, skip the crystal report loading code, included close and dispose methods on Crystal report AND the crystalreportviewer object, even set the objects to null.
Does not matter.
Execution will jump to the button code and hit the response.redirect command. And just stay on the page. The page is still live, you can click the button again and again. Occasionally maybe one out of 30 clicks, it will exit the page.
Note also, because of how Crystal is executing the init and page_load on every page in the report, it executes the page_unload on every pass, too, I discovered that by adding a page_unload and trying to put dispose code there.
Here is the entire aspx page behind code. This is Visual Studio 2010, C#, CR for Visual Studio 13 installed.
    public partial class ReportInvoicePackingListPrint : mmBusinessWebPage
        private ReportDocument report = new ReportDocument();
        protected bool leavingpage;
        protected void Page_Load(object sender, EventArgs e)
            // Amazingly, clicking a control to LEAVE the page REEXECUTES THE PAGE LOAD!!
            // I do not understand why, but checking for the ID of the controls on the page allows you to return and skip the rest of the page load.
            Control ctrl = PageUtilities.GetPostBackControl(this.Page);
            // if (ctrl != null && (ctrl.ID == "btnMainMenu" || ctrl.ID == "btnNewSearchHeader"))
            if (ctrl != null &&
                        (ctrl.ID == "btnMainMenu"
                            || ctrl.ID == "btnLocateByCustomerInfo"
                            || ctrl.ID == "btnReportInvoicePackingList"
                // We are going to redirect away to another page, OR we are re-entering and want to force !PostBack and Page_Load code.
                // Skip Page_Load code and all the database calls and setup overhead.
                leavingpage = true;
                report.Close();
                report.Dispose();
                CrystalReportViewer1.Dispose();
                CrystalReportViewer1 = null;
                report = null;
                return;
            string rpt_path = System.Web.HttpContext.Current.Server.MapPath("~/App_Reports_Crystal/InvoicePackingList.rpt");
            report.Load(rpt_path, CrystalDecisions.Shared.OpenReportMethod.OpenReportByDefault);
            // Retrive BatchNumber passed to this page and set the parm for the report object.
            string batchnumber = SessionProxy.BatchNumber;
            report.SetParameterValue("BatchNumber", batchnumber);
            CrystalReportViewer1.ToolPanelView = CrystalDecisions.Web.ToolPanelViewType.None;
            CrystalReportViewer1.ReportSource = report;
        protected void btnReportInvoicePackingList_Click(object sender, EventArgs e)
            Response.Redirect("~/App_Reports_Pages/ReportInvoicePackingList.aspx", true);
        protected void btnMainMenu_Click(object sender, EventArgs e)
            Response.Redirect("~/App_Menus/MainMenu.aspx", true);
        protected void btnLocateByCustomerInfo_Click(object sender, EventArgs e)
            Response.Redirect("~/App_Pages/CustLookUp.aspx", true);

Answer 1

Hi,
I was too encountering the same problem. I had tried Uher's solution. It doesn't work.
Plus in this QnA is there a resolution?? Below is my code.
//Report1.aspx
using CrystalDecisions.CrystalReports.Engine
namespace Report1
     //Current Code using Page_Init to pre-Renders the report
     protected void Page_Init(Object sender, EventArgs e)
         if (!IsPostBack)
           LoadReport();
         else
            CrystalReportViewer1.ReportSource = (ReportDocument)Session["sessionCryRpt"];
   //Previous Code & this is not working so disable
   protected void Page_Load(object sender, EventArgs e)
   //  if (!Page.IsPostBack)
   //  {  LoadReport();  }
   protected void MainButton_Click()
    Response.Redirect("MainPage.aspx");
   protected void CrystalReportViewer1_Init()
   private void LoadReport()
    ConnectionInfo connectionInfo = new ConnectionInfo();
    connectionInfo.ServerName = @"server";
    connectionInfo.DatabaseName = "tbl1";
    connectionInfo.UserID = "sa";
    connectionInfo.Password = "sa";
    connectionInfo.Type = ConnectionInfoType.SQL;
    connectionInfo.AllowCustomConnection = true;
    string strParam = Convert.ToString(Request.QueryString["Param"]);
    label1.Text = strParam;
    ReportDocument cryRpt = new ReportDocument();
    Report1 crystalReport1;
    crystalReport1 = new Report1();
    cryRpt.Load(Server.MapPath("CrystalReport1.rpt"));
    SetDBLogonForReport(connectionInfo, cryRpt);
    cryRpt.SetParameterValue("Param", strParam);
    CrystalReportViewer1.SelectionFormula = "{Param}";
    CrystalReportViewer1.ReportSource = crystalReport1;
    CrystalReportViewer1.ReportSource = cryRpt;
    //Create session & assign ReportDocument to session
     Session["sessionCryRpt"] = cryRpt;
    private void SetDBLogonForReport(ConnectionInfo connectionInfo, ReportDocument reportDocument)
    Tables tables = reportDocument.Database.Tables;
    foreach (CrystalDecisions.CrystalReports.Engine.Table table in tables)
     TableLogOnInfo tableLogonInfo = table.LogOnInfo;
     tableLogonInfo.ConnectionInfo = connectionInfo;
     table.ApplyLogOnInfo(tableLogonInfo);
//Report1.aspx code behind
<%@Page Language="C#" MasterPageFile="~/Site.Master" AutoEventWireup="true" CodeBehind="Report1.aspx.cs"       Inherits="Project.Report" %>
<td class="style5">
    <asp:Button ID="MainButton" runat="server" onclick="MainButton_Click"
       Text="Back To MainPage" Width="174px" CausesValidation="False" />
          </td>
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
       <CR:CrystalReportViewer ID="CrystalReportViewer1" runat="server"
                EnableDatabaseLogonPrompt="False" ReuseParameterValuesOnRefresh="True"
                AutoDataBind="True" Height="1269px" ToolPanelWidth="200px" Width="881px"
                oninit="CrystalReportViewer1_Init" GroupTreeImagesFolderUrl=""
                GroupTreeStyle-ShowLines="False" ReportSourceID="CrystalReportSource1"
                ToolbarImagesFolderUrl="" ToolPanelView="None"
                EnableParameterPrompt="False" SeparatePages="False" HasCrystalLogo="False"
                HasToggleGroupTreeButton="False" HasToggleParameterPanelButton="False" />
            <CR:CrystalReportSource ID="CrystalReportSource1" runat="server">
                <Report FileName="CrystalReport1.rpt">
                </Report>
            </CR:CrystalReportSource>
</asp:Content>