Design and Implementation Guidelines for Web Clients

patterns & practices Developer Center

Edward Jezierski and Naveen Yajaman, Microsoft Corporation; Andy Olsen, Content Master; Diego Gonzalez, Pablo Cibraro, and Daniel Cazzulino, Lagash Systems SA

November 2003

Applies to:
   Microsoft .NET Framework
   ASP.NET

Summary

This page provides an overview of Design and Implementation Guidelines for Web Clients. This guide provides advice on how best to implement logic in the presentation layer of a distributed application. This guide is designed to accompany the User Interface Process Application Block; this application block provides a template implementation for user interface process components.

Contents

Who Should Read This Guide
What Is in This Guide
Feedback and Support
Contributors

Who Should Read This Guide

This guide is written for readers in one or both of the following categories:

• Software developers
• Architects

What Is in This Guide

This guide addresses specific goals of presentation layer component design. This guide provides prescriptive recommendations and code samples that enable you to use design patterns and Microsoft .NET Framework programming idioms effectively in the presentation layer of your applications. The intent of this guide is to help you increase the portability, maintainability, scalability, security, and overall design quality of your presentation layer code; it does not discuss aesthetic user interface design issues.

Chapter 1: The Presentation Layer

This chapter introduces the topics in this guide and provides guidance on basic terminology. It also notes the decisions the authors of this guide assume you have already made.

Chapter 2: Using Design Patterns in the Presentation Layer

This chapter describes how to separate the responsibilities of components in the presentation layers by using common design patterns.

Chapter 3: Building Maintainable Web Interfaces with ASP.NET

This chapter describes how to make ASP.NET code easier to implement and maintain.

Chapter 4: Managing Data

This chapter describes the correct way for components in the user interface (UI) to access, present, update, and validate data input, and how the UI participates in maintaining data integrity.

Chapter 5: Managing State in Web Applications

This chapter describes the types of state used in the presentation layer and offers guidance about how to manage state in applications written for the Web.

Chapter 6: Multithreading and Asynchronous Programming in Web Applications

This chapter describes how to increase performance and responsiveness of the code in the presentation layer by using multithreading and asynchronous programming.

Chapter 7: Globalization and Localization

This chapter describes how globalization and localization requirements affect the development of your presentation layers.

Appendix A: Securing and Operating the Presentation Layer

Appendix A describes how security and manageability considerations affect the design of presentation layer components.

Appendix B: How To Samples

This appendix provides code samples to illustrate the various techniques described throughout this guide.

Feedback and Support

Design and Implementation Guidelines for Web Clients is designed to provide advice on how best to implement logic in the presentation layer of a distributed application. The example code is provided as source code that you can use "as is" or customize for your application. Support is available through Microsoft Product Support for a fee.

Contributors

Many thanks to Brenton Webster, .NET Enterprise Architecture Team, who provided invaluable assistance.

Thanks also to the many contributors who assisted us in the production, in particular:

• Edward Lafferty, patterns & practices
• Sharon Smith, patterns & practices
• Andrew Mason, patterns & practices
• Hemang Naik, Prashant Bansode, Shishir Jhaveri, and Sameer Tarey, Infosys Technologies Limited
• Tina Burden, Entirenet

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