In this article, Ged Mead demonstrates an easy way to use WPF and Windows Forms Interop to create and use a ComboBox that displays ToolTips for individual ComboBox items.

Murach's ADO.NET 3.5, LINQ, and the Entity Framework by Anne Boehm, comes in both Visual Basic and C# 2008 versions.  Larry Blake reviews it.

Matthew MacDonald wrote Visual Basic and C# versions of this book, with the subtitle "From Novice to Professional".

Larry Blake reviews it.

In this article, I introduce some Object-Oriented Programming concepts while creating a Custom Object.  I then fill a ListBox with the Custom Objects, and demonstrate some interesting features of the ListBox.

Extension methods are available starting with C# 3.0 and Visual Basic 9.0, which were released in 2007 with version 3.5 of the .NET platform.

Type inference refers to the ability of a programming language to automatically deduce a variable’s type. The feature was added to C# and Visual Basic to support anonymous types and the relaxed programming style required by Linq.