Crystal Report 10.5 very slow (30 minutes) to display

Question

crystal report 10.5 in vs 2008 display at extremely very slow speed in development server and production server. i have loaded a dataset as the datasource for the report. i also checked the code in debugging mode to know where the delay is but found out it is not from the code as the code executes to the end in less than a minute but the browser keeps loading for several minute before display.
please kindly help to resolve this issue.

Answer 1

With CR 2008:
For OLE DB then use:
MS SQL 2005 - OLE DB Provider
MS SQL 2008 - SQL Native 10
For ODBC then use:
MS SQL 2005 - SQL Native
MS SQL 2008 - SQL Native 10
Once you have a report created, you can use the following code at runtime:
Public Sub New()
        'This call is required by the Windows Form Designer.
        InitializeComponent()
        'Add any initialization after the InitializeComponent() call
        'Create an instance of the strongly-typed report object
        crReportDocument = New CrystalReport1()
        'Setup the connection information structure to be used
        'to log onto the datasource for the report.
        crConnectionInfo = New ConnectionInfo()
        With crConnectionInfo
            .ServerName = "escalade"    'physical server name
            .DatabaseName = "Pubs"
            .UserID = "sa"
            .Password = "admin"
        End With
        'Get the table information from the report
        crDatabase = crReportDocument.Database
        crTables = crDatabase.Tables
        'Loop through all tables in the report and apply the connection
        'information for each table.
        For Each crTable In crTables
            crTableLogOnInfo = crTable.LogOnInfo
            crTableLogOnInfo.ConnectionInfo = crConnectionInfo
            crTable.ApplyLogOnInfo(crTableLogOnInfo)
        Next
        'Set the viewer to the report object to be previewed.
        CrystalReportViewer1.ReportSource = crReportDocument
End Sub
And be careful with subreports. If you use the same connection type as for the main report the subreport should piggy back on the main connection. If you use a different connection, you'll have to use code to connect the subreports:
//loop through all the sections to find all the report objects
foreach (CrystalDecisions.CrystalReports.Engine.Section crSection in crSections)
    crReportObjects = crSection.ReportObjects;
    //loop through all the report objects to find all the subreports
    foreach (CrystalDecisions.CrystalReports.Engine.ReportObject crReportObject in crReportObjects)
        if (crReportObject.Kind == ReportObjectKind.SubreportObject)
            //you will need to typecast the reportobject to a subreport
            //object once you find it
            crSubreportObject = (CrystalDecisions.CrystalReports.Engine.SubreportObject)crReportObject;
            string mysubname = crSubreportObject.SubreportName.ToString();
            //open the subreport object
            crSubreportDocument = crSubreportObject.OpenSubreport(crSubreportObject.SubreportName);
            //set the database and tables objects to work with the subreport
            crDatabase = crSubreportDocument.Database;
            crTables = crDatabase.Tables;
            tableIndex = 0;
            bool SecureDB;
            //loop through all the tables in the subreport and
            //set up the connection info and apply it to the tables
            foreach (CrystalDecisions.CrystalReports.Engine.Table crTable in crTables)
            {   // check if integrated security is enabled
                SecureDB = crSubreportDocument.Database.Tables[tableIndex].LogOnInfo.ConnectionInfo.IntegratedSecurity;
                string TableName = crTable.Name.ToString();
                tableIndex++;
                crConnectioninfo.ServerName = "VMW2K8CRSE2K8";
                //if (!SecureDB)
                    crConnectioninfo.UserID = "sa";
                    crConnectioninfo.Password = "PW";
                    crConnectioninfo.DatabaseName = "QTYLTD";
                    crTableLogOnInfo = crTable.LogOnInfo;
                    crTableLogOnInfo.ConnectionInfo = crConnectioninfo;
                    crTable.ApplyLogOnInfo(crTableLogOnInfo);
rpt.VerifyDatabase();
For more info:
SAP Crystal Reports .NET SDK Developer Guide
SAP Crystal Reports .NET API Guide
http://scn.sap.com/docs/DOC-21967
http://scn.sap.com/docs/DOC-21953
(Not sure if I gave you the last two links already.
- Ludek