A5 Printing using Raw Data in C#

http://support.microsoft.com/kb/322091

I have used the above to link to print raw data this works fine. But my requirement is how do i print this same logic to print the data in A5 sheet for printing. 

when i select print it should print the raw data in A5 sheet without any dialog.

Currently it prints the A4 size in A5 sheet so data is not accurate.

Let me know how can i achieve this.

Thanks