Expert C# 2008 Business Objects (Paperback)

~ Rockford Lhotka (Author)
Key Phrases: binding source, web services, text box, Windows Forms, Web Forms, Visual Studio (more...)

Editorial Reviews

Product Description

Do you want to create .NET applications that provide high performance and scalability? Do you want to employ object–oriented programming techniques in a distributed environment? Do you want to maximize the reuse and maintainability of your code? Then this book is for you.

In Rockford Lhotka’s Expert C# 2008 Business Objects, you’ll learn how to use advanced .NET Framework capabilities alongside OO design and programming to create scalable, maintainable object–oriented applications. Better still, this book includes CSLA .NET 3.6, a widely used framework on which you can base your application development. By using the concepts and framework in the book, you can focus more on your business issues and less on technology.

Using VS 2008 and C# 3.0, Rockford Lhotka shows you how CSLA .NET 3.6 allows great flexibility in object persistence, so business objects can use virtually any data sources available. The CSLA framework supports 1–, 2– and n–tier models through the concept of mobile objects. This provides the flexibility to optimize performance, scalability, security, and fault tolerance with no changes to code in the UI or business objects.

Business objects based on CSLA.NET 3.6 automatically gain many advanced features that simplify the creation of Windows forms, web forms, WPF, WCF, WF, and web services interfaces, and LINQ.

Who is this book for

This book is for .NET developers using VS 2008 who want to create .NET applications that provide high performance and scalability, employing object–oriented programming techniques in a distributed environment.

About the Author

Rockford Lhotka is the author of numerous books, including Expert One-on-One Visual Basic .NET and Expert C# Business Objects. He is a Microsoft Software Legend, Regional Director, MVP, and INETA speaker. Rockford speaks at many conferences and user groups around the world and is a columnist for MSDN Online. Rockford is the principal technology evangelist for Magenic Technologies, one of the nation's premiere Microsoft Gold Certified Partners dedicated to solving today's most challenging business problems using 100% Microsoft tools and technology.

Product Details

• Paperback: 750 pages
• Publisher: Apress; 1 edition (December 19, 2008)
• Language: English
• ISBN-10: 1430210192
• ISBN-13: 978-1430210191
• Product Dimensions: 9.2 x 6.9 x 1.6 inches
• Shipping Weight: 2.8 pounds (View shipping rates and policies)
• Average Customer Review: 3.6 out of 5 stars  See all reviews (9 customer reviews)
• Amazon.com Sales Rank: #67,929 in Books (See Bestsellers in Books)

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Customer Reviews

Most Helpful Customer Reviews

9 of 9 people found the following review helpful:

4.0 out of 5 stars Substantive discussion of application architecture that puts .Net technologies into perspective, December 27, 2008

By	Techie Evan - See all my reviews

Since the publication of his Business Object Development Framework CSLA.Net in 2001, the author has been evolving the framework to keep it up to date with new releases of .Net. In this book, he revisits the design philosophies that guide the development of the CSLA.Net framework, and discusses with lots of code samples the changes and/or additions he has had to undertake to incorporate new feature offerings in .Net 3.5 SP1 and make the framework operate seamlessly with .Net technologies mature and newer. For example, because data binding in WinForms, WebForms, and Windows Presentation Foundation works differently in .Net behind the scenes, the author describes how he dealt with such complexities to hide them from users of his framework so that all users have to do to make CSLA.Net work with any of the three UI Technologies is to provide appropriate configuration settings. This is quite an accomplishment and there are many other places in the book where one can glean other thoughtful design techniques such that whether you agree or disagree with the views expressed in this book, you could still acquire a lot of design ideas and deeper knowledge of .Net itself. To be sure, the framework has a steeper than average learning curve, but whether you decide to use the framework or not, time spent studying it will pay off in many ways!!

4 of 4 people found the following review helpful:

5.0 out of 5 stars Difference & Bold in Software Design, February 28, 2009

By	Panitte Tuangsuwan (Bangkok, Thailand) - See all my reviews

In this book, "the different and bold way of software design is introduced." We are people who USE it everyday. We agreed with some reviewer (who rated this item very low!) and their opinions are true! But they are NOT fully understanding the key concepts (Business Objects & CSLA) this book has introduced.

YES, that's right! The Business Object "violated" every principle of software design Eric Evans (in his book, Domain-Driven Design: Tackling Complexity in the Heart of Software) and Martin Fowler (in Patterns of Enterprise Application Architecture (Addison-Wesley Signature Series)) give. Both Evans & Fowler are geniuses and principles they give are valuable. The principles are prepared for SCALABLE and future CHANGES in business requirements by SEPARATING concerns called Separation of Concerns (SoC) into layers and components. But, different and bold, Business Objects & CSLA favors object inheritance, instead.

*** If you understand the concepts in this book, it uses inheritance to normalize object's behaviors instead of its data (Many developers use inheritance for data normalization as we do it for RDBMS). Behaviors Normalization is very interesting concept. ***

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-- "Business Objects" vs. "Evans & Fowler (E&F)" --

1. Concept Complexity -- Business Object is very complex concept and needs some time to study while E&F is simplified. In our opinion, both take some time to experience.

2. Scalable for Enterprise Application -- Both are doing well for this. (When we talk about enterprise application, we mean the application that applied n-tier concept, supported large users, and solved complex business requirements.)

3. Productivity -- We brought this up because we think Business Object has this advantage. The framework increases your productivity to create new application with rich features**.

4. Changes in Software Design -- Many people think Business Objects is inflexible because it favors inheritance. That could be so true, but depended on how you use it. If you use the Business Objects that is rich-featured** or fat-featured** for simple application that doesn't need those features, it'll be a bad choice. However, what we suggest is to learn the concepts in this book and implement your own Business Objects based on Behavior Normalization. What we did is we created our own several Business Objects using concepts from the book and use what is suitable. We also applied E&F in our Business Objects. It takes some time to create Business Object as base class for real Business Object. But once you have it, you can create real business object very fast and that gives you productivity.

While E&F is very flexible, but may not be simple as it seems. What we like about E&F is that it's made for changes (SoC, Cohesion, and Coupling.)

5. **Concept Focus -- When you try to compare these two concepts, you are easily getting confused. Why? Because they are different. Concepts of Domain Modeling and Enterprise Architecture focus on separation of concern for changes. What they separated is functionality, Each layer and class must have strong concern or responsibility and it must be lowest as possible. A class should have one reason (concern or responsibility) to change. While Business Objects focus on object's behaviors, and only deals with Business Logic Layer and Data Access Layer. We all know that dealing with BLL & DAL is painful.

There are a lot of interesting things to learn from this book. But this is too much to write here!

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** Rich Features, Business Objects provide
- Validation and maintaining a list of broken business rules.
- Standard implementation of business & validation rules
- Authorization & authentication
- Strongly typed collections of child objects
- N-level undo capability
- Simple model for UI developer, Data Binding supported.
- Simple model for Data Access

Last word, Don't buy this book if you don't expect to learn different software design. Business Objects is not the best practice, it's just a practice. Business Objects is not solution you're looking for. There are no one best solution for every problem, but every problem has one best solution. Business Objects does not create an application, it helps you create the application.

1 of 1 people found the following review helpful:

5.0 out of 5 stars Excellently written introduction to CSLA, February 22, 2009

By	Benjamin Kaiser "Yayameen" (Pensacola, Florida USA) - See all my reviews (REAL NAME)

This book is written much better than its 2005 counterpart. The section are divided in such a way that you can read the book from cover to cover or skip to a section. This is a must read for any object oriented programmer, even those not involved with traditional server/client architectures.