1. CSLA
Presenter Sergey Barskiy, senior consultant at Magenic Technologies
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2. CSLA Component based, scalable, logical architecture
Application framework
CSLA Author – Rockford Lhotka
Resources
Download CSLA from the web side
Download project tracker setup document
Purchase the book 2.1 / 3.0
Available in C# and VB.NET

3. What is CSLA?
CSLA .NET is a software development framework that helps you build a powerful, maintainable business logic layer for Windows, Web, service-oriented and workflow applications.  
Helping to manage and implement this business logic is the purpose of CSLA .NET
CSLA .NET enables you to create an object-oriented business layer that abstracts and encapsulates your business logic and data. The framework automatically supports data binding for Windows Forms, Web Forms and WPF. It also supports workflow, WCF and web services interfaces. CSLA .NET simplifies and standardizes implementation of validation and authorization logic within your objects.
CSLA .NET also includes a technology-neutral client/server abstraction, allowing you to build your application and then decide at deployment whether to use 2-tier or 3-tier client/server. If you opt for 3-tier deployment, you can choose between WCF, .NET Remoting, Web Services or Enterprise Services as a network protocol. The key point here is that you can switch between 2-tier and any of these 3-tier networking options without changing your UI, business logic or data access code; all that changes is a configuration file (and of course deployment to both client and server).
Finally, CSLA .NET provides a clearly defined location in your architecture where you get data from or put data into the database. This is not the focus of CSLA .NET, and so the framework’s goal is to put you in charge. To give you optimum flexibility in how that data is managed and to enable decoupling of the data access from the business object and user interface or presentation layers.

4. What is CSLA? Supports rich UI and business layer creation through
Data binding
Validation
Business rules
Authorization / authentication

5. CSLA Advantages of framework Versions
Has been around for over 10 years
Proven and stable
Large and active community
Consistent and simple coding techniques
Object oriented analysis and design
Focus on business rules, not technology
Versions
Current version 3.0
Version 3.5 is in beta

6. CSLA Logical application architecture / model
Physical application architecture / model
Performance and scalability
Security
Authorization
Authentication
Layering
Presentation UI
Business Layer
Data access
Data and storage management

7. CSLA Enabling data objects in .NET
Data binding in Win Forms, WPF and Web Forms
Validation rules – abstract, consistent coding techniques
Authorization rules – centralized per property or per object access rules, defining read and write access
N-level undo, single level is used most often
Abstract persistence
Business objects in CSLA are mobile, thus assisting in scalability of entire framework

8. CSLA Key classes in the framework Building object graphs
Data Portal module
Business Base
Business List Base
Read Only Base
Read Only List Base
Command Base
Business Principal Base
Building object graphs
Data population
Data Updates / Transactional support

9. CSLA Helper Classes Application Context Safe Data Reader
Object Adapter
Data Mapper
Smart Date
Sorted Binding List
Filtered Binding List
Name / Value List
Application Context
Local Context
Client Context
Global Context
User

10. CSLA Business Object Business Object In Detail
Inherits from Business Base
Is a generic class
Key regions of a typical business object
Properties
Authorization Rules
Validation Rules
Factory Methods
Data Access

11. CSLA Business Object’s Properties
Typical property code
Purpose of PropertyHasChanged()
Mark object as dirty
Raise PropertyChanged Event
Run Validation Rules
Purpose of CanReadProperty and CanWriteProperty
IsDirty()
IsValid()
IsNew()

12. Business Objects / UI Interaction
Windows form code
Display Name
Error Provider
Enabling / Disabling of buttons
Enable Save / Cancel buttons based on edits
Disable Save button based on validity of objects
WPF form code
Web form code

13. CSLA Configuration Data Portal configuration
App.config / web.config
Communication protocol sections and configuration
Web Services
Remoting (IIS hosted or Windows Service)
Enterprise Services (COM+)
WCF (with all options available in WCF itself)
Unit testing

14. Code Generation CodeSmith templates
Templates that come in download of CSLA
How to create your own template to write classes from scratch
Database based classes generation

15. CSLA / ORM CSLA is NOT and ORM
You can use CSLA data retrieval / update methods to function as ORM adapter for CSLA business objects
You can
Combine multiple tables into single object (pivot)
You can split one table into multiple objects (unpivot)
Arbitrarily form data into objects
Important: CSLA business object and row from a table in a database do not have to be one and the same. Although a lot of the time they are.

16. Questions?