Описание тега oledbdatareader

OleDbDataReader Class provides a way of reading a forward-only stream of data rows from a data source.

System.Object
. System.MarshalByRefObject
.. System.Data.Common.DbDataReader
... System.Data.OleDb.OleDbDataReader

Namespace: System.Data.OleDb
Assembly: System.Data (in System.Data.dll)

To create an OleDbDataReader, you must call the ExecuteReader method of the OleDbCommand object, instead of directly using a constructor.

Before you close the OleDbConnection, first close the OleDbDataReader object. You must also close theOleDbDataReader object if you plan to resuse an OleDbCommand object.For example, you cannot retrieve output parameters until after you call Close.

http://msdn.microsoft.com/en-us/library/system.data.oledb.oledbdatareader.aspx