Languages in .NET

1. .NET Language Supports

2. VB C++ C# J# … Common Language Specification ASP .NET Web Forms Web Services Mobile Internet Toolkit Windows Forms ADO .NET and XML Base Class Library .NET Language Support Visual Studio .NET Common Language Runtime Operating System

3. .NET Language Support Overview VB C++ C# J# COBOL … Web Services User Interface ASP.NET ADO.NET: Data and XML Base Framework Common Language Runtime

4. IDE & CLR Integrated Development Environment Single Solution Explorer, Toolbox, and Debugger IntelliSense® statement completion and squigglies Create multi-language solutions Common Language Runtime Microsoft: Visual Basic®, C#, C++, J#, JScript® 3rd Party: APL, Cobol, Component Pascal, Eiffel, Fortran, Haskell, Mercury, Oberon, Oz, Perl, Python, RPG, Scheme, Smalltalk, Standard ML

5. Increased Productivity Simplifies mixed-language development RAD across the board Desktop Web Server Mobile End-to-end debugging support across Languages Projects Processes Machines

6. Language Enhancements Visual Basic .NET Fully object oriented, supports free threading Structured exception handling Visual C# .NET Increased productivity for C++ developer Component-oriented, type-safe Visual C++ .NET Attribute based programming Managed Extensions for C++ Visual J# .NET Java language for .NET Platform

7. Visual Basic .NET

8. Visual Basic .NET Overview Modern, Powerful, True OOP Inheritance, overloading, shadowing, delegates, attributes, hierarchical name spaces Robust Strict type checking, initialize variables at declaration, variable declaration types fixed Consistent Single assignment operator, parenthesis use simplified Simplified Legacy constructs removed

9. Classes & Inheritance Inheritance supported Derive from a single base class Implicitly inherits from System.Object Declarable classes Overriding New implementation for base class method Overrides keyword MyBase refers base class Me refers current class Overloading Multiple versions of a class member Based on parameter types

10. Demo 1: Visual Studio .NET Integrated Development Environment

11. Visual C# .NET

12. Visual C# .NET Overview Strong C++ heritage Immediately familiar to C++ and Java developers Allows C-style memory management and pointers First component-oriented language in C family Properties, methods, indexers, delegates, events Design-time and runtime attributes Enables one-stop programming No header files, IDL Embeddable in ASP .NET

13. Component-Oriented What defines a component? Properties, methods, events Design-time and runtime information Integrated help and documentation First class support in C# Not naming patterns, adapters, etc. Not external files Easy to build and consume

14. for I = 1 To 10 ‘ for loop Next I for (i=1;i<11;i++) { // for loop } Comparison to Visual Basic Syntactic Differences Visual Basic is NOT case sensitive In C# but not in Visual Basic Pointers, shift operators, inline documentation Overloaded operators, unsigned integers In Visual Basic but not in C# Select Case, Interface implementation Dynamic arrays, modules, optional parameters

15. Visual C++ .NET

16. Visual C++ .NET Compiler & Language Optimizations Whole Program Optimization Optimized inline assembly integration Loop unrolling heuristics Runtime checks Buffer Overrun Stack Corruption Shortened Converts Attributes – domain specific programming Radically simplifies COM+ and IDL Integrated with .NET Framework attributes model

18. It’s still C++

19. All enhancements are compatible extensions

20. Nothing from C++ has been changed or removed

21. Enables incremental migration to .NET

22. Existing code can be recompiled as IL

23. Mix managed code within existing applications

25. Visual J# .NET

26. Visual J# .NET Java-language for .NET Native support for XML Web services Fully integrated with Visual Studio .NET development environment Full access to the .NET Framework ASP .NET, ADO .NET, Windows Forms Integration with >20 other languages Protection of existing investments Use java language syntax on .NET Move applications and skills forward

27. Legacy Java Source JavaBinary Java Source targeting .NET Subset of JDK 1.1.4 & VJ++ 6.0 Libraries Binary Converter MSIL MSIL MSIL .NET Frameworks .NET Runtime Win32 Java-language Support Source Converter

29. Syntax extensions required for CLS

30. ubyte

31. @attribute – For attaching .NET attributes

32. Support for consuming .NET constructs:

34. Multi-language platform, 22 supported

35. Visual Basic .NET

36. More power, more productivity

37. Visual C++.NET

38. Power and flexibility for managed, native code

39. Visual C#.NET

40. Productivity for the C developer

41. Visual J#.NET