1 Visual Studio.NET Languages Carlotta Eaton Associate Professor of IST New River Community College Dublin, VA Slides by Microsoft

2 Agenda .NET Language Support  Visual Basic ®.NET  Visual C# ™.NET  Visual C++ ®.NET  Visual J# ™.NET

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

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

5.NET Language Support 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 ®  3 rd Party: APL, Cobol, Component Pascal, Eiffel, Fortran, Haskell, Mercury, Oberon, Oz, Perl, Python, RPG, Scheme, Smalltalk, Standard ML

6.NET Language Support Increased Productivity  Simplifies mixed-language development  RAD across the board  Desktop  Web  Server  Mobile  End-to-end debugging support across  Languages  Projects  Processes  Machines

7.NET Language Support 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

8 Visual Basic.NET

9 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

10 Visual Basic.NET 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

11 Demo 1: Visual Studio.NET Integrated Development Environment

12 Visual C#.NET

13 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

14 Visual C#.NET 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

15 Visual C#.NET 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 for I = 1 To 10 ‘ for loop ‘ for loop Next I for (i=1;i<11;i++) { // for loop }

16 Visual C++.NET

17 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 Visual C++.NET Managed Extensions  Full access to the.NET Framework from C++  It’s still C++  All enhancements are compatible extensions  Nothing from C++ has been changed or removed  Enables incremental migration to.NET  Existing code can be recompiled as IL  Mix managed code within existing applications  Power to drop “to the metal” when needed

19 Visual C++.NET Native Libraries  MFC/ATL  Improved MFC/ATL integration  Integrated Web Service client  Windows ® XP, GDI+, Crypto, NT Security, Perfmon, Accessibility  ATL Server  ATL framework for Web Services and Web applications  Stencil-based UI generation with integrated XML/HTML designer  Enhanced STL  Better conformance and error messages  Significantly improved documentation

20 Visual J#.NET

21 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

22 Visual J#.NET Java-language Support.NET Runtime Win32 SourceConverter Legacy Java Source BinaryConverter Java Binary MSIL Java Source targeting.NET MSIL.NET Frameworks Subset of JDK & VJ Libraries

23 Visual J#.NET.NET Extensions  To be CLS compliant  Syntax extensions required for CLS  ubyte – For attaching.NET attributes  Support for consuming.NET constructs:  Properties, Events, Delegates, Value types, Enums

24 Summary .NET Language Support  Multi-language platform, 22 supported  Visual Basic.NET  More power, more productivity  Visual C++.NET  Power and flexibility for managed, native code  Visual C#.NET  Productivity for the C developer  Visual J#.NET  Java language support for.NET Platform

25 Resources      msdn.microsoft.com  Microsoft Tech·Ed 2002  New Orleans, LA  April 9 – 13, 2002  msdn.microsoft.com/events/teched

26 Questions?

27 © 2001 Microsoft Corporation. All rights reserved.

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