Possible to Loop thru dataset using Custom Code?

Is there a way to pass a record set into a function of custom code?
If so?
What datatype should I use?
I have been told its impossible to loop thru the dataset...
Can you get the INDEX of the First row and the INDEX of the last row as
a parameter into a custom function?
regards,
Stas K.Mr. Sorcerdon,
Your best bet would be to implement a Custom Data Processing extension.
This will give you access to dataset being consumed by the report.
Specifically, the IDataReader has a Read method which walks the
dataset.
Andy Potter|||I dont you to go too deep into it, but basically make an Object as a
parameter and then read that object using this extension?
Is there a place where I can get code for this Custom Data Proccessing
extension?|||It is a class library that sits between your data source and your
report's dataset. It implements interfaces from MSRS.
Here's the MSDN article about a Custom Data Processing Extension.
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/rsprog/htm/rsp_prog_extend_dataproc_5c2q.asp
There are several good samples out there. Teo Lachev has a good one
that a google search will return.
Andy Potter