Datasets. It is company policy. I'm not sure I agree with the decision, but I don't know enough about the subject to argue at this time.

>>We're pretty new at this too. We pass datasets between layers. Our data classes are pretty simple. They get data, and store data. Our text file import routines are in our Biz classes. Seems to work ok so far.
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>So do you use any custom collections, or just stick with datasets?