This method is called by the batch preview component. It will be called before the data source is enumerated and is used to reset any members to default.

This method is called by the batch preview component. It should return true if the previous collected data should be removed as the new data (ShouldDoThatOne(IDataReader)) is used instead.

This method is called by the batch preview component. It should return true if the data where the reader object points to should be used. Please note that the reader object pointer should not be moved.

This method is called by teh batch preview component. It should return true if there is no need to search further for preview data.