.Net framework
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The document discusses the .NET framework, including: - It defines .NET as a framework built on open standards for developing and running software applications across platforms. - The core of the .NET framework is the Common Language Runtime (CLR) which manages code compiled for the .NET platform similarly to a Java Virtual Machine. - Applications are compiled into Microsoft Intermediate Language (MSIL) code then the CLR handles just-in-time compilation to native machine code for execution.
.Net framework
- 2. Contents Target Audience Platform & Framework What is a Platform? Framework Component What is .Net? .Net Framework Versions Core of .Net Framework – CLR CLR Main Actors I & II How compilation works Compilation & Execution Types of .Net Applications Take Away
- 3. Target Audience • System Programmers – One who programs directly for a given hardware eg. Exetremely low level output services. • Application Programmers – One who programs application used by the people for their requirement i.e calculator, calendar, excel etc • .Net is for Applciation programmers not for System programmers
- 4. Platform & Framework • Platform is an environment for developing and executing application. For eg. Development Env and Production Env. • Framework is ready to use collection of Classes and Interfaces used for developing a particular type of application.
- 6. Framework Components • Microsoft .net Runtime Used for both Development + Production environment of .Net Appication • Microsoft .net Framework SDK Used mainly for Development environment • Visula Studio .Net IDE + RAD for developing and debugging .Net application Supports multiple languages like VB, C#, VC++etc Not needed in Production environment
- 7. What is .Net? • Definition: MS.Net is a Framework built on open internet protocols & standards with tools and services that meld computing and communication is new ways. • Simple Definition: It is an environment for developing and running software application can be stand alone window apps or web services or web applications written in variety of programming languages + provides inter language and inter machine interoperability.
- 8. .Net Framework Version • V1.0 in Year 2002 (standalone version) • V1.1 in Year 2003 (standalone version) • V2.0 in Year 2005 (standalone version) • V3.0 in Year 2006 (installed over 2.0) • V3.5 in Year 2008 (installed over 3.0) • V4.0 in Year 2009 • All versions can be installed side by side on same machine.
- 9. Core of .Net Framework Base Class Libraries + CLR CLR Manages the code compiled for the .Net Platform. Its the JVM of Microsoft .Net
- 10. CLR – Main Actors I 1) CTS (Common Type System) - Provides every language running on .Net platform a base set of Data Types - Everything in CTS is an object - Most languages implement aliases to those types - For eg. Int is a 4 byte integer value of CTS type System.Int32
- 11. CLR – Main Actors II 2) CLS (Common Language Specification) The CLS is a set of rules a language compiler must follow to create a .Net application CLS defines the following - - Common variable types (CTS) - Common visibility like when and where one can see the variables - Common method specification and so on
- 12. How compilation work? • User writes code in any language i.e VB, C# • The respective compiler (VBC or CSC) will take the responsibility of compiling the code into MSIL • CLR takes the MSIL and pass it to CLR • CLR allows JIT(Just in Time compiler) runs its rule and process the MSIL to machine code which can be understood by OS. • Note: Machine/Native language totally depends upon the client machine configuration/OS/processor/RAM
- 14. Types of .Net Applications
- 15. Take Away