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C# 4.0 - Whats New

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Venketash (Pat) Ramadass
Venketash (Pat) Ramadass

This document summarizes new features in Visual Studio 2010, .NET 4.0, and C# 4.0. Key updates include improved tooling for cloud, parallel, and TDD development in Visual Studio 2010. .NET 4.0 features enhancements to the base class library like code contracts and parallel extensions. New C# 4.0 features are dynamic lookup, named and optional arguments, improvements for COM interop, and variance support through out and in keywords. The presenter encourages attendees to try the Visual Studio 2010 CTP and familiarize themselves with these new technologies.

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C# 4.0 – What’s new? Venketash (Pat) Ramadass Systems Architect & Managing Director emediaIT Email Address: pat.ramadass@emediait.com Blog: http://patramadass.emediait.com
Before all of that... Who here is primarily using VS 2003 and .NET 1.1?  Who here is primarily using VS 2005 and .NET 2.0?  Who here is primarily using VS 2008 and .NET 3.5?  ◦ What features are you using?  WPF, WCF, WF LINQ etc? Who has played with VS 2010 CTP?  ◦ Available for download
Items we are going to Cover... What’s new in VS 2010  What’s new in .NET 4.0  What’s new in c# 4.0  Questions  Note: All of these technologies are still new and are  still maturing through CTPs followed by Betas/RCs
What’s new in VS 2010
What’s new in VS 2010 – General .NET Framework 4.0  Tooling and Framework advancements that take advantage  of the latest trends including: ◦ Cloud Development  Windows Azure and similar ◦ Parallel Computing  Taking advantage of multi-core systems Updated editor built in WPF  ◦ Graphical view of source files, code coverage etc Simplified and more powerful TDD  ◦ Consume first declare second
What’s new in VS 2010 – TDD
What’s new in VS 2010 – Web Development Full inclusion of:  ◦ ASP .NET MVC ◦ JQuery ◦ Sliverlight Improved JavaScript IntelliSense engine  Improved SharePoint tools and project templates  ◦ VS 2010 Tools for SharePoint  Replacement for SharePoint Designer
What’s new in VS 2010 – SharePoint Development New Project Templates   Import content using WSP Import
What’s new in VS 2010 – SharePoint Development
What’s new in VS 2010 – Other Windows 7 Development  ◦ Updates to MFC to support Windows 7, including new UI elements Office Business Application Development  ◦ Build Office client applications that span multiple versions and target 32-bit/64-bit as using a single deployment package “Dublin” and “Oslo” in pipeline  ◦ “Dublin” will provide enhanced server capabilities, building on IIS for WCF and WF application hosting ◦ “Oslo” is a modelling platform for model-driven applications  “M” Language – Authoring domains textually  Quadrant – Tool for authoring domains visually  Library of pre-built domain models
What’s new in VS 2010 – Team System - Rosario Who here uses VSTS and/or VSTFS?  ◦ What features/aspects do you use? Highlights include:  ◦ “Democratizing” Application Lifecycle Management  Architectural consistency  Limiting “No-Repro” bugs ◦ Improved modelling  Technical and non-technical users ◦ Improved QA/Test Planning and execution  Microsoft Test Runner ◦ Snapshot of system data ◦ Partial/full video capture  Test Impact View
What’s new in VS 2010 – Test Impact View
What’s new in VS 2010 – Team System – Architecture Explorer
What’s new in .net 4.0
What’s new in .net 4.0 – Some Highlights Updates to BCL – Base Class Lilbrary  Code Contracts  ◦ System.Diagnostics.Contracts ◦ Language agnostic ◦ Specify Pre-conditions, post-conditions and objects invariants Parallel Extensions  ◦ Task Parallel Library, Parallel LINQ
What’s new in .net 4.0 – Some Highlights BigInteger  ◦ System.Numerics.BigInteger ◦ Supports all standard Integer operations Compression Improvements  ◦ Removed 4GB stream limit Various WCF and WF enhancements  ASP.NET  ◦ Static Client Ids ◦ Chart Control
What’s new in c# 4.0
What’s new in c# 4.0 Onto why we’re actually here...  ◦ Dynamic Lookup ◦ Named and Optional Arguments ◦ Features for COM Interop ◦ Variance
What’s new in c# 4.0 – Dynamic Lookup New dynamic type  Resolution of method calls or field accesses is  deferred until runtime Allows for calling or accessing identical methods  or properties across unrelated objects
What’s new in c# 4.0 – Dynamic Lookup Demo
What’s new in c# 4.0 – Dynamic Lookup DLR – Dynamic Language Runtime is underlying  mechanism This could be done before, using reflection or  interfaces etc, but it would require much more work Convenience comes with drawbacks  ◦ Performance  Reflection is used underneath ◦ Only have runtime checking
What’s new in c# 4.0 – Named and Optional Arguments Historically multiple overloads were required to  achieve this type of thing in c# ◦ Named parameters were never possible Now this can be done using the optional argument  syntax in a single constructor
What’s new in c# 4.0 – Named and Optional Arguments Demo
What’s new in c# 4.0 – Features for COM Interop Dynamic import allows you to import COM APIs so that  variants are represented using dynamic type instead of object. Code that looked like... ...could now look like...
What’s new in c# 4.0 – Features for COM Interop COM APIs use a lot of ref parameters. In c# 4.0 the  compiler allows you to omit the ref in COM APIs “No PIAs’ Feature  ◦ Ability to compile your application so that it does not require the Primary Interop Assemblies. ◦ Instead a small portion of the PIA required is put directly into the program’s assembly
What’s new in c# 4.0 – Variance Variance is one of those things most of us don’t  often don’t have to think about There are some cases which you may assume  should work that don’t however.
What’s new in c# 4.0 – Variance The following example does not work even though  string obviously inherits from object If it did, the following would have to work, which  goes against type safety
What’s new in c# 4.0 – Variance There may however be times where you would  want to have this type of thing happening and for it to happen safely c# 4.0 allows for covariance and contravariance  through the new out and in keywords
What’s new in c# 4.0 – Covariance and Contravariance Demo
Conclusion A lot of great new technologies and tools coming  out very soon There are some key advancements in both c# and  .net 4.0, so we should all be looking to familiarise ourselves with them and take advantage when they are available Download VS 2010 CTP and go through the  Walkthroughs
References http://www.microsoft.com/visualstudio/en-  us/products/2010/default.mspx ◦ Visual Studio 2010 main site and CTP download ◦ CTP is in the form of a VHD and some software expired on it in January 2009. There are workarounds. http://channel9.msdn.com/pdc2008/TL26/  ◦ Parallel Programming for Managed Developers with Visual Studio 2010 http://patramadass.emediait.com  ◦ This presentation, example code
Questions?

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C# 4.0 - Whats New

  • 1. C# 4.0 – What’s new? Venketash (Pat) Ramadass Systems Architect & Managing Director emediaIT Email Address: pat.ramadass@emediait.com Blog: http://patramadass.emediait.com
  • 2. Before all of that... Who here is primarily using VS 2003 and .NET 1.1?  Who here is primarily using VS 2005 and .NET 2.0?  Who here is primarily using VS 2008 and .NET 3.5?  ◦ What features are you using?  WPF, WCF, WF LINQ etc? Who has played with VS 2010 CTP?  ◦ Available for download
  • 3. Items we are going to Cover... What’s new in VS 2010  What’s new in .NET 4.0  What’s new in c# 4.0  Questions  Note: All of these technologies are still new and are  still maturing through CTPs followed by Betas/RCs
  • 4. What’s new in VS 2010
  • 5. What’s new in VS 2010 – General .NET Framework 4.0  Tooling and Framework advancements that take advantage  of the latest trends including: ◦ Cloud Development  Windows Azure and similar ◦ Parallel Computing  Taking advantage of multi-core systems Updated editor built in WPF  ◦ Graphical view of source files, code coverage etc Simplified and more powerful TDD  ◦ Consume first declare second
  • 6. What’s new in VS 2010 – TDD
  • 7. What’s new in VS 2010 – Web Development Full inclusion of:  ◦ ASP .NET MVC ◦ JQuery ◦ Sliverlight Improved JavaScript IntelliSense engine  Improved SharePoint tools and project templates  ◦ VS 2010 Tools for SharePoint  Replacement for SharePoint Designer
  • 8. What’s new in VS 2010 – SharePoint Development New Project Templates   Import content using WSP Import
  • 9. What’s new in VS 2010 – SharePoint Development
  • 10. What’s new in VS 2010 – Other Windows 7 Development  ◦ Updates to MFC to support Windows 7, including new UI elements Office Business Application Development  ◦ Build Office client applications that span multiple versions and target 32-bit/64-bit as using a single deployment package “Dublin” and “Oslo” in pipeline  ◦ “Dublin” will provide enhanced server capabilities, building on IIS for WCF and WF application hosting ◦ “Oslo” is a modelling platform for model-driven applications  “M” Language – Authoring domains textually  Quadrant – Tool for authoring domains visually  Library of pre-built domain models
  • 11. What’s new in VS 2010 – Team System - Rosario Who here uses VSTS and/or VSTFS?  ◦ What features/aspects do you use? Highlights include:  ◦ “Democratizing” Application Lifecycle Management  Architectural consistency  Limiting “No-Repro” bugs ◦ Improved modelling  Technical and non-technical users ◦ Improved QA/Test Planning and execution  Microsoft Test Runner ◦ Snapshot of system data ◦ Partial/full video capture  Test Impact View
  • 12. What’s new in VS 2010 – Test Impact View
  • 13. What’s new in VS 2010 – Team System – Architecture Explorer
  • 14. What’s new in .net 4.0
  • 15. What’s new in .net 4.0 – Some Highlights Updates to BCL – Base Class Lilbrary  Code Contracts  ◦ System.Diagnostics.Contracts ◦ Language agnostic ◦ Specify Pre-conditions, post-conditions and objects invariants Parallel Extensions  ◦ Task Parallel Library, Parallel LINQ
  • 16. What’s new in .net 4.0 – Some Highlights BigInteger  ◦ System.Numerics.BigInteger ◦ Supports all standard Integer operations Compression Improvements  ◦ Removed 4GB stream limit Various WCF and WF enhancements  ASP.NET  ◦ Static Client Ids ◦ Chart Control
  • 17. What’s new in c# 4.0
  • 18. What’s new in c# 4.0 Onto why we’re actually here...  ◦ Dynamic Lookup ◦ Named and Optional Arguments ◦ Features for COM Interop ◦ Variance
  • 19. What’s new in c# 4.0 – Dynamic Lookup New dynamic type  Resolution of method calls or field accesses is  deferred until runtime Allows for calling or accessing identical methods  or properties across unrelated objects
  • 20. What’s new in c# 4.0 – Dynamic Lookup Demo
  • 21. What’s new in c# 4.0 – Dynamic Lookup DLR – Dynamic Language Runtime is underlying  mechanism This could be done before, using reflection or  interfaces etc, but it would require much more work Convenience comes with drawbacks  ◦ Performance  Reflection is used underneath ◦ Only have runtime checking
  • 22. What’s new in c# 4.0 – Named and Optional Arguments Historically multiple overloads were required to  achieve this type of thing in c# ◦ Named parameters were never possible Now this can be done using the optional argument  syntax in a single constructor
  • 23. What’s new in c# 4.0 – Named and Optional Arguments Demo
  • 24. What’s new in c# 4.0 – Features for COM Interop Dynamic import allows you to import COM APIs so that  variants are represented using dynamic type instead of object. Code that looked like... ...could now look like...
  • 25. What’s new in c# 4.0 – Features for COM Interop COM APIs use a lot of ref parameters. In c# 4.0 the  compiler allows you to omit the ref in COM APIs “No PIAs’ Feature  ◦ Ability to compile your application so that it does not require the Primary Interop Assemblies. ◦ Instead a small portion of the PIA required is put directly into the program’s assembly
  • 26. What’s new in c# 4.0 – Variance Variance is one of those things most of us don’t  often don’t have to think about There are some cases which you may assume  should work that don’t however.
  • 27. What’s new in c# 4.0 – Variance The following example does not work even though  string obviously inherits from object If it did, the following would have to work, which  goes against type safety
  • 28. What’s new in c# 4.0 – Variance There may however be times where you would  want to have this type of thing happening and for it to happen safely c# 4.0 allows for covariance and contravariance  through the new out and in keywords
  • 29. What’s new in c# 4.0 – Covariance and Contravariance Demo
  • 30. Conclusion A lot of great new technologies and tools coming  out very soon There are some key advancements in both c# and  .net 4.0, so we should all be looking to familiarise ourselves with them and take advantage when they are available Download VS 2010 CTP and go through the  Walkthroughs
  • 31. References http://www.microsoft.com/visualstudio/en-  us/products/2010/default.mspx ◦ Visual Studio 2010 main site and CTP download ◦ CTP is in the form of a VHD and some software expired on it in January 2009. There are workarounds. http://channel9.msdn.com/pdc2008/TL26/  ◦ Parallel Programming for Managed Developers with Visual Studio 2010 http://patramadass.emediait.com  ◦ This presentation, example code