saving and retreiving crystal report

i am new in crystal reports. my scenario is:

I created a crystal report, set dataset as datasource and simply send it to printer. this goes fine.

Now i wanted to:

1. Save that report to database in any format.
2. Retrieve that report from database in any format.
3. Set the report as send to printer

My code is as follows:

CrystalReport objRpt =newCrystalReport();

objRpt.SetDataSource= objDataset;

Stream objStream = objRpt.ExportToStream(ExportFormatType.CrystalReport)

//steam to byte array and then save byte array in database

what is the reverse code ?