.NET Best Practices and Design Patterns:
Hands-On

Introduction

• Coding with best practices
• Simplifying software with design patterns

Simplifying Complex Programming with Proven Design Patterns

Applying simple interfaces to intricate algorithms

• Unifying interfaces from subsystems for ease of use and reusability
• Implementing the Facade pattern

Varying functionality by programming to interfaces

• Enhancing the adaptability and flexibility of your application
• Exploiting the Strategy pattern

Extending object behaviour dynamically

• Increasing functionality without impacting existing code
• Composing objects with the Decorator pattern

Achieving reuse and flexibility

• Eliminating code duplication by outlining a basis for an algorithm
• Employing the Template Method pattern

Interfacing incompatible classes

• Transforming an interface to add value to existing code
• Harnessing the Adapter pattern

Applying Test-Driven Development Techniques

Automating unit testing

• Shortening development cycles with automated tests
• Improving quality with consistent test coverage
• Eliminating regression errors with reusable tests

Integrating testing and coding

• Applying the test-first programming practice to drive code design
• Generating immediate green-light feedback for increased code quality and short feature development cycles
• Organising, coordinating and running test cases with Visual Studio

Architecting a Layered Application

Designing the application architecture

• Layering architectures for reusability, durability and scalability
• Accessing data from the business tier
• Decoupling object creation with the Factory pattern
• Preserving object identity with the Identity Map pattern

Programming application tiers

• Structuring a Web or rich client application with the Observer pattern
• Organising state-rich applications with the State pattern
• Restructuring database tables without impacting application code

Modelling a business area

• Liberating rich Business Object Models from database structures using the Domain Model pattern
• Mapping rich Business Objects to database tables with the Data Mapper pattern
• Collapsing Business Object hierarchies with the Inheritance Mapper pattern
• Exploiting declarative programming in Microsoft Entity Framework to implement Data Mapping classes

Applying Best Practices

Organising and implementing business logic

• Applying domain logic patterns in the middle tier
• Extending Entity types with partial classes
• Manipulating groups of Entities with business logic classes

Best practices in class design

• Guarding against rigidity with the Open/Closed Principle
• Extracting new classes with the Single Responsibility Principle
• Effective use of inheritance

Automating Repetitive Tasks

Easing data access code

• Reducing database access code by exploiting Entity Navigation Properties
• Eliminating database update code with Entity change tracking

Enhancing application code

• Automating design reviews with FxCop and Visual Studio Analysis
• Eliminating code duplication through refactoring to design patterns