This solution contains all my example projects for my blog's Daily Design Pattern series, and is also used in my Demonstrating Common Design Patterns with C# and Food presentation.

You can also get these examples, along with updated text and examples about them, as an eBook by signing up to be a paid subscriber on my blog!

This series covers 22 of the Gang of Four's patterns. Here's the individual posts:

Creational Patterns:
Abstract Factory
Builder
Factory Method
Prototype
Singleton

Structural Patterns:
Adapter
Bridge
Composite
Decorator
Facade
Flyweight
Proxy

Behavioral Patterns:
Chain of Responsibility
Command
Iterator
Mediator
Memento
Observer
State
Strategy
Template Method
Visitor