C#でDesign Pattern
VB.NETとC#でデザインパターン
http://hccweb1.bai.ne.jp/tsune-1/
Design Patterns in C# and VB.NET - Gang of Four (GOF)
http://www.dofactory.com/Patterns/Patterns.aspx
Data Structures and Algorithms
with Object-Oriented Design Patterns in C#
http://www.brpreiss.com/books/opus6/body.html