C# 2.0 Nullable Data Readers

.NET 2.0 introduced nullable types into the CLR which, for the first time, provided the ability for value types to be assigned a null value. However, ADO.NET 2.0 did not introduce any new features specifically for dealing with nullable types. Therefore, one of the primary goals for the classes presented in this article is to provide a simple API for working with nullable types within the persistence layer.

Link