Although ADO.NET 2.0 is the most recent version of the API, the majority of devices that SQL Anywhere supports have only ADO.NET 1.x support installed. To use ADO.NET version 2.0 on a device, you must download the support for ADO.NET 2.0 from Microsoft, and install it to your device.
As part of the SQL Anywhere installation, you must specify which version of the .NET Compact Framework you want to use if you plan to develop ADO.NET applications:
Version 1.x This is the default. For information about developing an application with ADO.NET 1.0, refer to the API reference for the SQL Anywhere .NET Data Provider at http://www.ianywhere.com/downloads/products/sqlanywhere/sql_10_dotnet_api_reference.pdf.
For more information about using ADO.NET, see Tutorial: Using the SQL Anywhere .NET Data Provider.