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This article to share with you is about how to implement the. net framework of the problem analysis, Xiaobian feel quite practical, so share to everyone to learn, I hope you can read this article after some harvest, not much to say, follow Xiaobian to see it.

First, let's talk about the concept of. NET. What is. net? What does it mainly consist of?

. Net is a new generation computing and communication platform built to simplify application development in the highly distributed environment of the third generation Internet, based on open Internet standards and protocols, and to achieve high interoperability between heterogeneous languages and platforms.

. Net mainly includes Common Language Runtime and. Net Architecture Library.

I. What are the main advantages of Net?

The main advantages of. Net are cross-language, cross-platform, security, and support for open Internet standards and protocols.

. Net supports multi-language interoperability, i.e. components developed in one language can be reused in another through object-oriented inheritance, and currently supports more than 20 languages.

. Net implements interoperability of objects on heterogeneous platforms by compiling languages into intermediate languages (IL) and then compiling them into native platform code with Just In Time compilers at execution time. Currently. Net supports Windows,Linux and Unix.

. Net implements security of resource objects and types through the Common Language Runtime.

. Net provides a programming interface for accessing remote services, connecting remote devices, and interacting with remote applications in heterogeneous network environments through strong support for Internet standards such as HTTP,XML, SOAP, and WSDL.

II. What does Common Language Runtime mean in Net? Where is it in. Net?

CLR(Common Language Runtime) is the foundation of the entire. Net framework, and is the key to implementing core features such as. Net cross-platform, cross-language, code security, etc. It is actually a piece of proxy code residing in memory, responsible for the code management work during the entire execution of. NET, more typical are: memory management, thread management, remote management, code enforcement safety type, etc. These are the lifelines of the. NET framework. In effect, the common language runtime proxies for some of the operating system's administrative functions.

III. What is Net Architecture Class Library? What does it include?

Netl architecture class library is a collection of reusable classes built on the object-oriented features of runtime and tightly integrated with common language runtime. It greatly simplifies software development and integrates seamlessly with third-party components.

The. Net architecture library includes support for the following programming models:

1. Console application.

2. Scripts and hosted applications.

3. Windows Forms application (Windows desktop GUI application).

4. ASP.Net applications.

5. Web Services applications.

6. Windows Server

IV. What are the supported languages? What does interoperability of the Net language mean?

. Net claims to support more than 20 languages on the market, but currently only Microsoft officially released C#,Visual Basic. Net, Managed C++, and Jscript, other vendors claim to be in the development of support tools such as COBOL,Eiffel,Perl,Smalltalk,Python.

Interoperability of. Net language refers to the support of languages that follow the Common Language Runtime specification in object inheritance, that is, classes developed in one language under the. Net platform can be reused in another language, which is realized by a language called Microsoft Intermediate Language MIL, that is, the language compiler first compiles the language into Microsoft Intermediate Language and then compiles native code under the corresponding platform. All of this is done within the normal language runtime specification.

V. What platforms does Net support? How well does it work across platforms?

Currently. Net is supported on Windows 2000, NT4 SP6a, Windows Me and Windows 98. It claims to support Unix,Linux, etc.

There are currently three projects developing the. Net platform for Linux: Ximian's Mono project, DotGNU, and Potable. NET.

VI. What is the relationship between Net and COM? Does Net mean the end of COM?

COM defines a binary standard for communication between component objects, and. Net provides a similar mechanism through the component's built-in type system, which provides another way to do so. Net does not mean the end of COM, but it will greatly reduce developers 'dependence on COM. Net supports interoperability between COM and. Net components, actually getting COM components in. Net through Runtime Callable Wrapper(RCW) and getting. Net components in COM through COM Callable Wrapper (CCW).

VII. What is the intermediate language (IL) in Net? What role does it play in the. Net platform? Can developers program in an intermediate language (IL)?

An intermediate language in. Net is one that can be run under the common language runtime specification. A CPU-independent family of instructions that are translated into native code by a Just In Time compiler at execution time. It is a core component of language interoperability in the. Net platform, where all languages are compiled into an intermediate language (IL). Programmers can also program directly in an intermediate language (IL), but that is not recommended. IL is useful for understanding certain behaviors of. Net objects and debugging programs

VIII. What is automatic garbage collection in Net? What changes does it bring to programming under the. Net platform?

The. Net garbage collector is responsible for memory allocation and deallocation tasks for the entire. Net runtime managed code. It selects objects and time to collect through certain optimization algorithms. Programmers can only immediately force garbage collection when releasing a large number of managed resources, and use Finalize operation to deal with when releasing unmanaged resources. Those that need to be released during program execution should implement Dispose() method and explicitly call. The rest of the time the recycling of resources is left to. Net garbage collection.

IX. What do managed and unmanaged codes for Net mean? What's the difference between their codes?

Managed Code for. Net refers to code that conforms to the Common Language Runtime specification and is managed in memory by runtime code agents, thread management, remote management, and code enforcement security types. Unmanaged code refers to code that operates on unmanaged resources such as memory, files, databases, etc. It is usually not managed by runtime code agents and is unsafe.

For managed code programming, focus only on the logic of programming, and the management of resources such as memory is left to the Common Language Runtime, while for unmanaged code programming, developers are carefully responsible for the allocation and recycling of various unmanaged resources.

The above is how to implement the. net framework problem analysis, Xiaobian believes that some knowledge points may be our daily work will see or use. I hope you can learn more from this article. For more details, please follow the industry information channel.

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