ASA Programming Guide
Adaptive Server Anywhere .NET Data Provider API Reference
AsaDataReader class
Returns true if the AsaDataReader is closed. Otherwise it returns false.
bool IsClosed
Read-only
True if the AsaDataReader is closed; otherwise, false.
IDataReader.IsClosed
IsClosed and RecordsAffected are the only properties that you can call after the AsaDataReader is closed.