ASA Programming Guide
Programming Interface Overview
ADO.NET is the latest data access API from Microsoft in the line of ODBC, OLE DB, and ADO. It is the preferred data access component for the Microsoft .NET Framework and allows you to access relational database systems.
The Adaptive Server Anywhere .NET data provider implements the iAnywhere.Data.AsaClient namespace and allows you to write programs in any of the .NET supported languages, such as C# and Visual Basic .NET, and access data from Adaptive Server Anywhere.
In addition to this book, you may wish to consult other materials on .NET data access to help in your development efforts. For example, 
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnbda/html/daag.asp.
The ADO.NET programming interface is described in Introduction to the Adaptive Server Anywhere .NET Data Provider, Using the Adaptive Server Anywhere .NET Data Provider Sample Applications, Developing Applications with the .NET Data Provider, and Adaptive Server Anywhere .NET Data Provider API Reference.