Visual Studio .NET
Languages
Carlotta Eaton
Associate Professor of IST
New River Community College
Dublin, VA
Slides by Microsoft
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Agenda
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.NET Language Support
Visual Basic® .NET
Visual C#™ .NET
Visual C++® .NET
Visual J#™ .NET
.NET Language Support
VB
C++
C#
…
J#
Common Language Specification
Web Forms Web Services
Mobile Internet Toolkit
Windows
Forms
ADO .NET and XML
Base Class Library
Common Language Runtime
Operating System
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Visual Studio .NET
ASP .NET
.NET Language Support
Overview
VB
C++
C#
J#
Web Services
COBOL
User Interface
ASP.NET
ADO.NET: Data and XML
Base Framework
Common Language Runtime
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…
.NET Language Support
IDE & CLR
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Integrated Development Environment
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Common Language Runtime
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Single Solution Explorer, Toolbox, and Debugger
IntelliSense® statement completion and squigglies
Create multi-language solutions
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
.NET Language Support
Increased Productivity
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Simplifies mixed-language development
RAD across the board
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End-to-end debugging support across
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Desktop
Web
Server
Mobile
Languages
Projects
Processes
Machines
.NET Language Support
Language Enhancements
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Visual Basic .NET
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Visual C# .NET
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Attribute based programming
Managed Extensions for C++
Visual J# .NET
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Increased productivity for C++ developer
Component-oriented, type-safe
Visual C++ .NET
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Fully object oriented, supports free threading
Structured exception handling
Java language for .NET Platform
Visual Basic .NET
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Visual Basic .NET
Overview
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Modern, Powerful, True OOP
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Robust
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Single assignment operator, parenthesis use
simplified
Simplified
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Strict type checking, initialize variables at
declaration, variable declaration types fixed
Consistent
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Inheritance, overloading, shadowing, delegates,
attributes, hierarchical name spaces
Legacy constructs removed
Visual Basic .NET
Classes & Inheritance
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Inheritance supported
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Declarable classes
Overriding
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New implementation for base class method
Overrides keyword
MyBase refers base class
Me refers current class
Overloading
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Derive from a single base class
Implicitly inherits from System.Object
Multiple versions of a class member
Based on parameter types
Demo 1: Visual Studio .NET
Integrated Development
Environment
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Visual C# .NET
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Visual C# .NET
Overview
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Strong C++ heritage
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First component-oriented language in C
family
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Properties, methods, indexers, delegates, events
Design-time and runtime attributes
Enables one-stop programming
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Immediately familiar to C++ and Java developers
Allows C-style memory management and pointers
No header files, IDL
Embeddable in ASP .NET
Visual C# .NET
Component-Oriented
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What defines a component?
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First class support in C#
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Properties, methods, events
Design-time and runtime information
Integrated help and documentation
Not naming patterns, adapters, etc.
Not external files
Easy to build and consume
Visual C# .NET
Comparison to Visual Basic
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Syntactic Differences
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Visual Basic is NOT case sensitive
for I = 1 To 10
‘ for loop
Next I
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In C# but not in Visual Basic
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Pointers, shift operators, inline documentation
Overloaded operators, unsigned integers
In Visual Basic but not in C#
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for (i=1;i<11;i++) {
// for loop
}
Select Case, Interface implementation
Dynamic arrays, modules, optional parameters
Visual C++ .NET
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Visual C++ .NET
Compiler & Language
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Optimizations
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Runtime checks
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Buffer Overrun
Stack Corruption
Shortened Converts
Attributes – domain specific programming
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Whole Program Optimization
Optimized inline assembly integration
Loop unrolling heuristics
Radically simplifies COM+ and IDL
Integrated with .NET Framework attributes
model
Visual C++ .NET
Managed Extensions
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Full access to the .NET Framework from C++
It’s still C++
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Enables incremental migration to .NET
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All enhancements are compatible extensions
Nothing from C++ has been changed or removed
Existing code can be recompiled as IL
Mix managed code within existing applications
Power to drop “to the metal” when needed
Visual C++ .NET
Native Libraries
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MFC/ATL
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ATL Server
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ATL framework for Web Services and Web
applications
Stencil-based UI generation with integrated
XML/HTML designer
Enhanced STL
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Improved MFC/ATL integration
Integrated Web Service client
Windows® XP, GDI+, Crypto, NT Security,
Perfmon, Accessibility
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Better conformance and error messages
Significantly improved documentation
Visual J# .NET
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Visual J# .NET
Java-language for .NET
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Native support for XML Web services
Fully integrated with Visual Studio .NET
development environment
Full access to the .NET Framework
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Protection of existing investments
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ASP .NET, ADO .NET, Windows Forms
Integration with >20 other languages
Use java language syntax on .NET
Move applications and skills forward
Visual J# .NET
Java-language Support
Java
Binary
Legacy Java
Source
Binary
Converter
MSIL
Java Source
targeting .NET
Source
Converter
MSIL
Subset of JDK 1.1.4 & VJ++ 6.0 Libraries
.NET Runtime
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Win32
MSIL
.NET Frameworks
Visual J# .NET
.NET Extensions
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To be CLS compliant
Syntax extensions required for CLS
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Support for consuming .NET constructs:
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ubyte
@attribute – For attaching .NET attributes
Properties, Events, Delegates, Value types, Enums
Summary
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.NET Language Support
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Visual Basic .NET
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Productivity for the C developer
Visual J# .NET
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Power and flexibility for managed, native code
Visual C# .NET
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More power, more productivity
Visual C++ .NET
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Multi-language platform, 22 supported
Java language support for .NET Platform
Resources
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www.gotdotnet.com/team/csharp
www.gotdotnet.com/team/vb
www.gotdotnet.com/team/cplusplus
www.microsoft.com/seminar
msdn.microsoft.com
Microsoft Tech·Ed 2002
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New Orleans, LA
April 9 – 13, 2002
msdn.microsoft.com/events/teched
Questions?
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© 2001 Microsoft Corporation. All rights reserved.
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.NET Framework
Presentation
© 2001 Microsoft Corporation. All rights reserved.
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