More C# Language Changes and Updates

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Latest changes and updates for C# Language.

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More C# Language Changes
and Updates
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Implementing New Language
Features
• Demo

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Copyright © by Application Developers Training Company

Named and Optional
Parameters
• Named parameters let you specify method
parameters with a name
• Can reorder names when calling
• Names aren’t required
• Optional parameters aren’t required
• Must be last in signature

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Caller Information
• Attributes for info about calling code
• CallerFilePathAttribute
• CallerLineNumberAttribute
• CallerMemberNameAttribute

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Covariance and Contravariance
• Allow implicit conversion between types
• Apply to arrays delegates and generic type
arguments
• Covariance: preserves type compatibilitiy
• Contravariance reverses type compatibility

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Embedded Interop Assemblies
• Traditional COM References Hold all Metadata
• Embedded Interop Assemblies only include the
actual methods used
• No need to deploy Primary Interop Assembly

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

New Command Line Options
• The C# compiler has three new options
• /link
• /langversion
• /appconfig

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Including Common .NET
Framework Classes
• Demo

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

New Types of Interest
• BigInteger
• Complex
• Tuple

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Lazy Initialization
• Lazy<T> allows just-in-time initialization
• Object not created until first used
• Can specify constructor and thread safety

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

New Generic Types
• ReadOnly interfaces for Lists, Collections, and
Dictionarys
• New Set types

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Breaking Changes
• Demo

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Breaking Changes
• Lambda Expressions
• LINQ Expressions
• Named Arguments
• Overload Resolution

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Essential Skills
• Demo

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Debugging Tips
• Breakpoints
• Shortcut Keys
• Ctrl+F10 – Step Over
• Ctrl+F11 – Step Into
• Shift+F11 – Step Out
• Move Cursor
• Run To

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Debugger Windows
• Exceptions
• Autos
• Locals
• Watch
• Immediate
• Call Stack

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Building Code
• Can build both Solutions and Projects
• Build – only what needs to be built
• Rebuild – forces build of all projects
• Clean – removes assemblies from build folder
• Build Configurations

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

Questions?

http://www.LearnNowOnline.com

Learn More @ http://www.learnnowonline.com
Copyright © by Application Developers Training Company

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More C# Language Changes and Updates

3. Named and Optional Parameters • Named parameters let you specify method parameters with a name • Can reorder names when calling • Names aren’t required • Optional parameters aren’t required • Must be last in signature Learn More @ http://www.learnnowonline.com Copyright © by Application Developers Training Company

4. Caller Information • Attributes for info about calling code • CallerFilePathAttribute • CallerLineNumberAttribute • CallerMemberNameAttribute Learn More @ http://www.learnnowonline.com Copyright © by Application Developers Training Company

5. Covariance and Contravariance • Allow implicit conversion between types • Apply to arrays delegates and generic type arguments • Covariance: preserves type compatibilitiy • Contravariance reverses type compatibility Learn More @ http://www.learnnowonline.com Copyright © by Application Developers Training Company

6. Embedded Interop Assemblies • Traditional COM References Hold all Metadata • Embedded Interop Assemblies only include the actual methods used • No need to deploy Primary Interop Assembly Learn More @ http://www.learnnowonline.com Copyright © by Application Developers Training Company

7. New Command Line Options • The C# compiler has three new options • /link • /langversion • /appconfig Learn More @ http://www.learnnowonline.com Copyright © by Application Developers Training Company

10. Lazy Initialization • Lazy<T> allows just-in-time initialization • Object not created until first used • Can specify constructor and thread safety Learn More @ http://www.learnnowonline.com Copyright © by Application Developers Training Company

15. Debugging Tips • Breakpoints • Shortcut Keys • Ctrl+F10 – Step Over • Ctrl+F11 – Step Into • Shift+F11 – Step Out • Move Cursor • Run To Learn More @ http://www.learnnowonline.com Copyright © by Application Developers Training Company

17. Building Code • Can build both Solutions and Projects • Build – only what needs to be built • Rebuild – forces build of all projects • Clean – removes assemblies from build folder • Build Configurations Learn More @ http://www.learnnowonline.com Copyright © by Application Developers Training Company

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