Please Help! ERROR: Application Server failed. when Refreshing

Question

Please help on this below issue. Thanks.
We have a requirement that using ASP.NET (C#), we need to open saved .rpt file (saved with data and the rpt file is assigned to the web page as query string) and let the users refresh themselves with latest data by clicking at refresh icon of the CrystalReportViewer. But it throws 'The Report Application Server failed' error message. What could cause this message. below is the piece of code we are using to configure the report.
private void ConfigureCrystalReports()
string reportPath = Server.MapPath("Reports
SEMS0001_UBS.rpt");
this.CrystalReportSource2.ReportDocument.Load(reportPath);
CrystalReportViewer1.Visible = false;
SetDBLogonForReport(this.CrystalReportSource2.ReportDocument);
int i = 0;
foreach (ParameterField field in this.CrystalReportSource2.ReportDocument.ParameterFields)
field.HasCurrentValue = true;
//this.CrystalReportSource2.ReportDocument.Refresh();
CrystalReportViewer1.ParameterFieldInfo = this.CrystalReportSource2.ReportDocument.ParameterFields;
CrystalReportViewer1.Visible = true;
public void SetDBLogonForReport(ReportDocument reportDocument)
Tables tables = reportDocument.Database.Tables;
connectionInfo.ServerName = "server"; //ConfigurationManager.AppSettings["DBServer"];
connectionInfo.UserID = "user"; //ConfigurationManager.AppSettings["DBUser"];
connectionInfo.Password = "passwd"; //XsiteWinRpt.ConnUtil.GetOnlyPasswordOfConnString(); //ConfigurationManager.AppSettings["DBPassword"];
//foreach (CrystalDecisions.Shared.IConnectionInfo connection in reportDocument.DataSourceConnections)
// connection.SetConnection(ConfigurationManager.AppSettings["DBServer"], "", ConfigurationManager.AppSettings["DBUser"], ConfigurationManager.AppSettings["DBPassword"]);
// connection.SetLogon(ConfigurationManager.AppSettings["DBUser"], ConfigurationManager.AppSettings["DBPassword"]);
foreach (CrystalDecisions.CrystalReports.Engine.Table table in tables)
TableLogOnInfo tableLogonInfo = table.LogOnInfo;
tableLogonInfo.ConnectionInfo = connectionInfo;
table.ApplyLogOnInfo(tableLogonInfo);
//reportDocument.Database.Tables[0].ApplyLogOnInfo(tableLogonInfo);

Answer 1

Attaching full code ... Our case is the RPT files are stored wih default parameters and saved data. We need to let users just refresh the rpt files with latest db data and overwrite with the same rpt files. But this code keep showing The application server failed mesg. when the refresh icon of viewer is clicked.
Attaching the code as it is not properly attached in my previous reply ...
=======================
Begin - aspx.cs code
=======================
using System;
using System.Data;
using System.Data.OleDb;
using System.Configuration;
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 CrystalDecisions.CrystalReports.Engine;
using CrystalDecisions.CrystalReports;
using CrystalDecisions.Shared;
using CrystalDecisions.Web;
public partial class _Default : System.Web.UI.Page
    private ConnectionInfo connectionInfo = new ConnectionInfo();
    protected void Page_Load(object sender, EventArgs e)
        if (!IsPostBack)
            //ConfigureCrystalReports();
    protected void  CrystalReportViewer1_Init(object sender, EventArgs e)
        ConfigureCrystalReports();
    private void ConfigureCrystalReports()
        string reportPath = Server.MapPath(@"Reports\Report1.rpt");
        this.CrystalReportSource1.ReportDocument.Load(reportPath);
        CrystalReportViewer1.Visible = false;
        SetDBLogonForReport(this.CrystalReportSource1.ReportDocument);
        foreach (ParameterField field in this.CrystalReportSource1.ReportDocument.ParameterFields)
            field.HasCurrentValue = true;
        //this.CrystalReportSource1.ReportDocument.Refresh();
        CrystalReportViewer1.ReuseParameterValuesOnRefresh = true;
        CrystalReportViewer1.Visible = true;
    public void ReportDocument_RefreshReport(object sender, EventArgs e)
        try
SetDBLogonForReport(this.CrystalReportSource1.ReportDocument);
CrystalReportViewer1.ReuseParameterValuesOnRefresh = true;
            this.CrystalReportSource1.ReportDocument.SetDatabaseLogon("user", "passwd", "server", "");
            foreach (ParameterField field in this.CrystalReportSource1.ReportDocument.ParameterFields)
                field.HasCurrentValue = true;
                field.AllowCustomValues = true;
                //field.EnableNullValue = true;               
            this.CrystalReportSource1.ReportDocument.Refresh();
                   this.CrystalReportSource1.ReportDocument.SaveAs(@"C:\Inetpub\wwwroot\XsiteRpt\Reports\Report1.RPT", true);
        catch (Exception ex)
            Msg.Text = ex.Message;
    public void SetDBLogonForReport(ReportDocument reportDocument)
        Tables tables = reportDocument.Database.Tables;
        connectionInfo.ServerName = "server"; //ConfigurationManager.AppSettings["DBServer"];
        connectionInfo.UserID = "user"; //ConfigurationManager.AppSettings["DBUser"];
        connectionInfo.Password = "passwd"; //XsiteWinRpt.ConnUtil.GetOnlyPasswordOfConnString(); //ConfigurationManager.AppSettings["DBPassword"];
        foreach (CrystalDecisions.CrystalReports.Engine.Table table in reportDocument tables)
            TableLogOnInfo tableLogonInfo = table.LogOnInfo;
            tableLogonInfo.ConnectionInfo = connectionInfo;
            table.ApplyLogOnInfo(tableLogonInfo);
=======================
End - aspx.cs.code
=======================
=======================
Begin - Assemblies
=======================
<assemblies>
                    <add assembly="CrystalDecisions.Web, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
                    <add assembly="CrystalDecisions.Shared, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
                    <add assembly="CrystalDecisions.ReportSource, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
                    <add assembly="CrystalDecisions.Enterprise.Framework, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
                    <add assembly="CrystalDecisions.Enterprise.Desktop.Report, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
                    <add assembly="CrystalDecisions.CrystalReports.Engine, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/>
                    <add assembly="CrystalDecisions.Enterprise.InfoStore, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692FBEA5521E1304"/><add assembly="CrystalDecisions.ReportAppServer.ClientDoc, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"/>
      </assemblies>
=======================
End - Assemblies
=======================
=======================
Begin - aspx
=======================
<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Xsite.aspx.cs" Inherits="_Default" %>
<%@ Register Assembly="CrystalDecisions.Web, Version=10.2.3600.0, Culture=neutral, PublicKeyToken=692fbea5521e1304"
    Namespace="CrystalDecisions.Web" TagPrefix="CR" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
    <title>Refresh Report</title>
    <link href="/aspnet_client/System_Web/2_0_50727/CrystalReportWebFormViewer3/css/default.css"
        rel="stylesheet" type="text/css" />
    <link href="/aspnet_client/System_Web/2_0_50727/CrystalReportWebFormViewer3/css/default.css"
        rel="stylesheet" type="text/css" />
</head>
<body>
    <form id="form1" runat="server">
    <div>
        <asp:Panel ID="PanelMsg" runat="server">
        <br />
        <asp:Label ID="Msg" runat="server" Font-Bold="False" Font-Names="Verdana" ForeColor="Navy"></asp:Label>
        <br />
        </asp:Panel>
        <asp:Panel ID="PanelViewer" runat="server">
        <CR:CrystalReportViewer ID="CrystalReportViewer1" OnReportRefresh="ReportDocument_RefreshReport" runat="server" AutoDataBind="True"
            EnableDatabaseLogonPrompt="False" EnableParameterPrompt="False" ReuseParameterValuesOnRefresh="True" HasRefreshButton="True" Height="820px" OnInit="CrystalReportViewer1_Init" ReportSourceID="CrystalReportSource1" ShowAllPageIds="True" Width="1215px" />
        <CR:CrystalReportSource ID="CrystalReportSource1" runat="server">           
        </CR:CrystalReportSource>
        </asp:Panel>
    </div>
    </form>
</body>
</html>
=======================
End - aspx
=======================