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Go Live with .NET 3.0

Go Live with .NET 3.0. Ivan Towlson, ECN Group. Agenda. What is .NET 3.0? Should I be considering/recommending it for current projects?. What is .NET 3.0?. .NET Framework 2.0 CLR, BCL and compilers plus Windows Presentation Foundation Windows Communication Foundation

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Go Live with .NET 3.0

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  1. Go Live with .NET 3.0 Ivan Towlson, ECN Group

  2. Agenda • What is .NET 3.0? • Should I be considering/recommending it for current projects?

  3. What is .NET 3.0? • .NET Framework 2.0 CLR, BCL and compilers plus • Windows Presentation Foundation • Windows Communication Foundation • Windows Workflow Foundation • Windows CardSpace

  4. Where do customers get it? • Out of the box with Windows Vista • 50 Mb redistributable or download for XP SP2 and 2003 • Not available on earlier versions

  5. What do I need to develop on it? • Runtime • Vista SDK • Optionally, VS2005 integration

  6. What is its status? • Runtime – released and fully supported • SDK – released and fully supported • Visual Studio • 2005 integration – CTP, not being progressed • ‘Orcas’ – no release date, current CTP does not include all designers

  7. Windows Presentation Foundation • Common user input and output API • Mouse, keyboard, ink, speech • Controls, graphics, text, audio/speech, video • DirectX based • Declarative programming model • XAML: HTML-like description of UI • Data binding

  8. Consider WPF If You Need... • Custom graphics • Even something as simple as a Gantt chart • Animation • Document-type layouts (rich text, adaptive layouts, mixed text and media) • Navigation

  9. Windows Communication Foundation • Common framework for message-oriented communication • SOAP-based • Transport agnostic (HTTP, TCP, MSMQ...) • Interface oriented • Configurable composition of policies (security, reliability, transactionality, etc.) • Address, binding, contract in configuration

  10. Consider WCF If You Need... • Messaging • Policy-driven capabilities (security, reliability, etc.) • Communication between your own processes (rather than running in IIS)

  11. Windows Workflow Foundation • Workflow • Sequential workflow – e.g. expense application • State machine – e.g. bug tracking • Host-based, configurable policies e.g. persistence, tracking • Rules engine

  12. Consider WF If You Need... • Long-running processes • State tracking / progress tracking • Externalised (configurable) rules • This can be used for a lot more than business rules – e.g. configuration-driven validation, enabling/disabling, navigation control • BAM (Business Activity Monitoring)

  13. Development Tradeoffs – WPF • Incumbent technology: Windows Forms • Tooling (‘Cider’ VS designer, Blend) • XAML + Intellisense = not so bad • Controls • Third-party support

  14. Development Tradeoffs – WCF • Incumbent technologies: WSE, ASMX, Remoting, MSMQ, Enterprise Services (COM+) • Protocols have two ends

  15. Development Tradeoffs – WF • Incumbent technologies: only at enterprise server level, e.g. BizTalk, BPM tools • Tooling • VS05 integration stable in practice but not supported (underlying designer is supported) • Extra work to match enterprise tools • Robustness, scaling, load balancing, etc. • Adapters, transforms, resources/roles

  16. Development Tradeoffs – General • Documentation and samples • Community support / knowledge • Best practices • Diagnostic and debugging tools not as mature as core CLR/procedural tools

  17. Development Tradeoffs – General • Investment in existing codebases – migration or interoperation • Availability of skilled developers (able to work without tooling, able to mentor)

  18. Deployment Considerations – Consumer / Personal Apps • That’s a big download • Users may not be allowed to install the framework on their work machines • Rules out Win2000 and Win9x customers • Win2000 still the standard desktop at many big companies

  19. Deployment Considerations – Corporate Apps • Another piece of plumbing to roll out • Education • The “3.0” moniker may make IT groups resistant even though it’s really 2.0 + libraries • Compatibility fears • Corporate PCs often have low-end graphics capabilities (WPF)

  20. Deployment Considerations – General • Do operations staff know how to configure it, secure it, back it up, diagnose faults, plan capacity, perform failover etc.? • This is often more of an application issue, but consider WCF/WF configuration files, WF dehydration/rehydration (e.g. SQL Server considerations, versioning)

  21. Management Fears • Development and deployment considerations discussed earlier • Microsoft’s commitment – anyone remember Web classes? • Support status – hotfixes etc.

  22. Management Fears • ‘Let’s wait until other people are using it’ – technology seen as unproven – case studies • Wait for migration path instead of starting over • Technology roadmap

  23. Summary • Should I be considering .NET 3.0 for my next project? • Yes! • But, as with any new technology, be realistic about the implications: would you have moved from VB6 to .NET in 2002?

  24. Questions? Ivan Towlson, ECN Group ivan@hestia.cc http://hestia.typepad.com/flatlander

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