Crystal Reports 2008 - connection info in code not recognized

Question

Application is vb.net using dynamic cascading parms and has been runnning fine in Crystal XI using VS2005.  We upgraded to VS2008 and CR 2008 for compatibility with Windows 7.  Now all reports do not recognize the data connection assignment that takes place in the code (they revert to the connection used at design time). 
We set the connection (ci) which is later referenced as myConnectionInfo
          With ci
                .ServerName =
                .UserID =
                .Password =
                .DatabaseName =
                .IntegratedSecurity = False
            End With
And loop thru the tables.
            For Each myTable As CrystalDecisions.CrystalReports.Engine.Table In myTables     
                Dim myTableLogonInfo As TableLogOnInfo = myTable.LogOnInfo
                myTableLogonInfo.ConnectionInfo = myConnectionInfo
                myTable.ApplyLogOnInfo(myTableLogonInfo)               
            Next
The connection passes a TestConnectivity test.  But rather than see the parameter form, a generic form displays with the ServerName filled and requests login info.  If you do enter that manually(not normal),  the CR parm form displays but dynamic parms do not have their combo box. 
The report will run fine against the default data connection.  The problem is the report no longer recognizes the coded connection change which is critical to reporting the proper information.

Answer 1

Hi Ludek,
I too am facing the same problem. My environment detail is CR2008/VS2008 (Note I have no service pack installed yet). If I have a report with no dynamic parameter the report works fine with connection information provided in code but with dynamic parameter its not working even after the workaround you specified. I am getting the error
CrystalDecisions.CrystalReports.Engine.InternalException - Failed to retrieve data from the database
Here is my code:
protected void logonReport(string dbServerName, string dbName,
            string dbUserId, string dbPwd)
            ConnectionInfo connInfo = null;
            TableLogOnInfo tblLogonInfo = null;
            Tables tbls = null;
            try
                connInfo = new ConnectionInfo();
                connInfo.ServerName = dbServerName;
                connInfo.DatabaseName = dbName;          //not used for Oracle
                connInfo.UserID = dbUserId;
                connInfo.Password = dbPwd;
                tbls = this._crReport.Database.Tables;
                foreach (Table tbl in tbls)
                    tblLogonInfo = tbl.LogOnInfo;
                    tblLogonInfo.ConnectionInfo = connInfo;
                    tbl.ApplyLogOnInfo(tblLogonInfo);
                this._crReport.DataSourceConnections[0].SetConnection(dbServerName, dbName, dbUserId, dbPwd);
            catch (Exception ex)
                throw ex;
            finally
                if (connInfo != null) connInfo = null;
Thanks
Kajal