Most important features of ADO.NET 2.0:
Bulk Copy Operation : It facilitates bulk copy operation from one Data Source to another Data Source.
Batch Update : To update n no of rows in a database table in a single call from a program thus by avoiding round trip to the database.
Data Paging : To read data from a certain index
Connection Details : To get detailed info about connections like buffer information, cursor details, etc.
DataSet.RemotingFormat Property : To make the dataset serialized in Binary
DataTable's Load and Save Methods : For XML interactions.