Crystal Report Viewer navigation slow in ASP

Question

Hi all,
We have a simple asp page that is rendering a report in a crystal report viewer.  We are using the using the default parameter panel for parameter selection, and are setting the db credentials in the report document, see code below. 
Two things we are seeing.....
First, this isn't a big report, and it seems to take about 20 seconds for the progress bar on the bottom of the Internet Explorer to complete loading
Second, navigating the tree to other nodes is really slow.  In the code, the pageload event is firing each time.  I tried checking the Page.IsPostBack value, but that is false only for the time the default parameter panel renders, and then the code throws and exception when the actual report is trying to render. 
Can you help?
Thanks,
Cindy
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using CrystalDecisions.Shared;
using CrystalDecisions.CrystalReports.Engine;
public partial class _Default : System.Web.UI.Page
    protected void Page_Load(object sender, EventArgs e)
        if (Page.IsPostBack == false)
            ReportDocument rdReport = new ReportDocument();
            rdReport.Load(this.Server.MapPath("MyReport.rpt"));
            System.Configuration.ConnectionStringSettings connString = System.Configuration.ConfigurationManager.ConnectionStrings["MyConnectionString"];
            if (connString != null)
                SqlConnectionStringBuilder sb = new SqlConnectionStringBuilder(connString.ConnectionString);
                ConnectionInfo ci = new ConnectionInfo();
                ci.ServerName = sb.DataSource;
                ci.UserID = sb.UserID;
                ci.Password = sb.Password;
                ci.DatabaseName = sb.InitialCatalog;
                ci.Type = ConnectionInfoType.CRQE;
                if (CrystalReportViewer1.ReportSource == null)
                    rdReport.DataSourceConnections[0].SetConnection(ci.ServerName, ci.DatabaseName, ci.UserID, ci.Password);
                    CrystalReportViewer1.ReportSource = rdReport;
                CrystalReportViewer1.ReportSource = rdReport;

Answer 1

Hello Amit,
Thank you for your quick response.
That did help; however, in order for the code to compile, I needed to move the instantiation of the report document out of the IsPostBack loop, as well as the reportdocument.load (or I get that exception again).  As a result, I'm then prompted for the db credentials, which we cannot have happen..
Is there another way around this?
Thanks so much,
Cindy