framework Exposure

Exposing theMicrosoft .NETFramework: 

Exposing the Microsoft .NET Framework (c) Allan C. Milne School of Computing & Creative Technologies University of Abertay Dundee Last updated 26th July 2006

Agenda: 

Agenda Interoperability Compilation VB.NET & C# Visual Studio .NET Application contexts

Language Interoperability: 

Language Interoperability Common IL, CLR, class library & type system .NET features available in all languages Development tools can be applied to all languages Application components can be written in different languages Class inheritance works across languages

Its Music To My Ears: 

Its Music To My Ears "Programming in different languages is like composing pieces in different keys, particularly if you work at the keyboard. If you have learned or written pieces in many keys, each key will have its own special emotional aura. Also, certain kinds of figurations "lie in the hand" in one key but are awkward in another. So you are channelled by your choice of key. In some ways, even enharmonic keys, such as C-sharp and D-flat, are quite distinct in feeling. This shows how a notational system can play a significant role in shaping the final product." “Godel, Echer, Bach: An Eternal Golden Braid” Hofstadter, 1980, Chapter X

The Right Tool for the Job: 

The Right Tool for the Job .NET Framework Application VB .NET C# JScript GUI functionality web interaction

Compilation: 

Visual Studio .NET Compilation Source code VB.NET C# IL Metadata Resources Assemblies Class library

Visual Basic .NET: 

Visual Basic .NET VB has been rewritten Incompatible with VB6 Generally more logical and elegant Fully object-oriented Removes legacy features Includes full .NET functionality Retains VB development model

C# (C sharp): 

C# (C sharp) “A completely new language” ? Basically it’s the Java programming model with a more C++ like syntax Fully supports .NET functionality Includes enumerations, foreach, properties, events, delegates, … Enables rapid development a la VB

Visual Studio .NET: 

Visual Studio .NET The integrated development environment (IDE) for .NET Includes all the usual management, development & debugging support One IDE for all languages Supports all .NET features including windows, web form & web services applications Supports different project types

Developing with .NET: 

Developing with .NET Use the Framework SDK to initially get to grips with the concepts avoid too many learning curves develop simple applications Use Visual Studio .NET to create more complex user interfaces manage larger projects create applications in database or internet contexts

Console Applications: 

Console Applications The CLR can operate in a console context such as the Command Prompt Screen text output & keyboard input supported through the class System.Console Class library functionality is fully accessible

Windows Forms: 

Windows Forms Client desktop applications can be built using all .NET functionality Applications can be console-based or windows-based Use System.Windows.Forms namespace for GUI creation Standard GUI components available with properties, methods & events Visual Studio .NET provides GUI designer to generate required code

ADO.NET: 

ADO.NET Replaces DAO, RDO, ADO Defines a disconnected data object model An access mechanism and object model for databases Supports many database types Facilitates XML integration Supports XML-based services Internet-aware Scaleable

ASP.NET: 

ASP.NET Replaces Active Server Pages (ASP) Embedded server-side web page processing Can use any .NET language The ASP.NET code is compiled rather than interpreted Executes against a server-side CLR

Web Forms: 

Web Forms Analogous to Windows forms Exposes HTML web pages Interface developed through drag-and-drop web form designer in Visual Studio .NET Built around server-side controls with properties, methods & events executed on the server Web forms emit HTML to build an interface in a browser

Web Services: 

Web Services Allows applications to communicate & share data across the Internet Exposes a class API across the Internet Facilitates distributed scaleable applications Stateless Non-proprietary Protocol Stack

Web Services Mapping: 

Web Services Mapping Application Concepts Web Protocol .NET Concepts

Getting Hold of .NET: 

Getting Hold of .NET .NET Framework SDK CLR, compilers, debuggers, tools, class libraries, documentation, … free download of ~100Mb Visual Studio .NET IDE for all languages size ~2.5Gb to 3.5Gb