Can I edit the rpt file & change the datasource before loading the report?

Question

We are an ISV and our application has a lot of reports.  Our reports use a SQL Server database as the data source and each SQL Server at our customer sites has a different name.
In our testing we have determined that ReportDocument.Load tries to connect to the SQL Server that is saved in the RPT.  If it can't fine the SQL Server saved in the RPT the load take about 60 seconds while it is waiting for the SQL Server Connection to time out.
We are using the Visual Studio 2008 version of Crystal Reports.  This did not seem to be a problem with VB6/CR8.5.
We would like to edit the RPT and change the data source to the appropriate SQL Server before we call ReportDocument.Load.
Is it possible to edit the rpt file and change the data source before loading the report?
Or is there some way to tell Crystal not to try connecting to the DB
during the report.load?
In our case we will NEVER use the data source that is saved in the RPT, we will always change the data source using ApplyLogOnInfo.
Thanks

Answer 1

HI Todd,
You Can Not edit the report document before ReportDocument.Load() because if you dont load the report then you dont have anything to Edit
But as far as changing the datasource is concerned you can change that at runtime.
For changing the datasource following code will help you if both databases have a same schema :
Code for changing the database
ConnectionInfo crConnectionInfo = new ConnectionInfo();
crConnectionInfo.ServerName = "SERVER";
crConnectionInfo.DatabaseName = "DATABASE";
crConnectionInfo.UserID = "USERID";
crConnectionInfo.Password = "PASSWORD";
// Loop through the ReportObjects in a report and find all the subreports
foreach(ReportObject crReportObject in crReportDocument.ReportDefinition.ReportObjects)
     // Check the kind of the ReportObject, if it is a subreport
     // proceed. If not skip.
     if(crReportObject.Kind == ReportObjectKind.SubreportObject)
          // Get the SubReport in the form of a ReportDocument
          string sSubreportName = ((SubreportObject)crReportObject).SubreportName;
          ReportDocument crSubReportDocument = crReportDocument.OpenSubreport(sSubreportName);
          // Use a loop to go through all the tables in the main report
          foreach(Table crTable in crSubReportDocument.Database.Tables)
// Get the TableLogOnInfo from the Table and then set the new
// ConnectionInfo values.
TableLogOnInfo crLogOnInfo = crTable.LogOnInfo;
crLogOnInfo.ConnectionInfo = crConnectionInfo;
// Apply the TableLogOnInfo
crTable.ApplyLogOnInfo(crLogOnInfo);
// Set the location of the database. This value will vary from database to
// database.
crTable.Location = "DATABASE.OWNER.TABLENAME" or crTable.Locations;
The sample for doing this is available on support site.
Thanks,
Prasad