Latest changes and updates for C# Language.

1. More C# Language Changes
and Updates
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2. Implementing New Language
Features
• Demo
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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
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4. Caller Information
• Attributes for info about calling code
• CallerFilePathAttribute
• CallerLineNumberAttribute
• CallerMemberNameAttribute
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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
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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
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7. New Command Line Options
• The C# compiler has three new options
• /link
• /langversion
• /appconfig
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8. Including Common .NET
Framework Classes
• Demo
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9. New Types of Interest
• BigInteger
• Complex
• Tuple
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10. Lazy Initialization
• Lazy<T> allows just-in-time initialization
• Object not created until first used
• Can specify constructor and thread safety
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11. New Generic Types
• ReadOnly interfaces for Lists, Collections, and
Dictionarys
• New Set types
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12. Breaking Changes
• Demo
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13. Breaking Changes
• Lambda Expressions
• LINQ Expressions
• Named Arguments
• Overload Resolution
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14. Essential Skills
• Demo
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15. Debugging Tips
• Breakpoints
• Shortcut Keys
• Ctrl+F10 – Step Over
• Ctrl+F11 – Step Into
• Shift+F11 – Step Out
• Move Cursor
• Run To
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16. Debugger Windows
• Exceptions
• Autos
• Locals
• Watch
• Immediate
• Call Stack
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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
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18. Questions?
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