I've been trying to use the sqldatasource but I'm running into a problem. I want to create it on the backend in my data access layer. I have this.

public class GetHospitals
{
string hospital;
string hospitalid;
sqldatasource batches;
}

I set all of its commands and its connection string and I am trying to send it to the presentation layer but always get an object not set to an instance of an object error. This worked fine when I was using a dataset but since I have switched to sqldatasource, its not working. Can I pass a sqldatasource? Any help on this would be helpful, thanks!