vb.net的英文论文 vbnet using

求关于.NET技术的相关英文文献

.NET Essentials

.NET Framework Essentials.NET

Windows Forms in a Nutshell

Foundations of Object Oriented Programming Using .NET 2.0 Patterns 2005

Pro Scalable .NET 2.0 Application Designs 2006

Professional .NET 2.0 Generics 2005

Programming .NET Components

Ado Activex Data Objects 2001

Professional ADO.NET 2 Programming With SQL Server 2005, Oracle, MySQL

ASP.NET 2.0 Everyday Apps For Dummies 2006

ASP.NET 2.0 Visual Web Developer 2005 Express Edition Starter Kit 2006

ASP.NET Bible 2002

ASP.NET Database Programming Weekend Crash Course 2002

Beginning ASP.NET 2.0 with C Sharp 2006

Mastering ASP.NET with C Sharp 2002

Pro ASP.NET in C# 2005

A Programmer钬檚 Guide to ADO.NET in C Sharp 2002

C Sharp .NET Web Developer's Guide 2002

C Sharp Your visual blueprint for building .NET applications 2001

Data Entry and Validation with C Sharp and VB .NET Windows Forms 2003

Developing Microsoft .NET Applications for Windows in Visual C# 2002

MSDN Training - Introduction to C# Programming for the Microsoft .NET Platform 2001

Network programming .NET with C Sharp and VB.NET 2004

OOP with Microsoft Visual Basic .NET and Microsoft Visual C Sharp Step By Step 2002

Pro .NET 2.0 Code And Design Standards In C#, 3rd Ed 2006

Pro C Sharp 2005 and the .NET 2.0 Platform

Visual C Sharp .NET Developer's Handbook 2002

Visual C Sharp .NET Programming 2002

Visual C Sharp ASP .NET Programming 2002

COM and .Net Component Services

A programmers introduction to VB.NET 2001

Mastering Visual Basic .NET 2002

Programming VB .NET 2002

The Book of Visual Basic 2005 - .NET Insight for Classic VB Developers

VB.NET Mastering vb.net database programming 2002

VB.NET Syngress Developers guide 2001

Visual Basic .NET How to Program 2nd Ed

Visual Basic .NET Language in a Nutshell 2st ed 2001

Visual C++ .NET Developer钬檚 Guide 2002

Visual Studio C++ .NET Developer's Guide 2002

相关问答

Q1: 通信类英文论文、英文文献

基于WIN CEvb.net的英文论文的ADSL线路参数研究

ADSL line parameters research based on WIN CE

;id=jDmiKarm_EMCdq=ADSLprintsec=frontcoversource=webots=oJXbatzNWOsig=fyomvlADYeB7NRS2gjTJAfpSapQ

;id=HsXaS5y6SZoCdq=ADSLprintsec=frontcoversource=webots=EdCHuJT2WGsig=QnNSogd7OIvYS7Z6Vr2UYal4iw8

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Windows CE (also known officially as Windows Embedded CE since version 6.0[2][3], and sometimes abbreviated WinCE) is a variation of Microsoft's Windows operating system for minimalistic computers and embedded systems. Windows CE is a distinctly different kernel, rather than a trimmed-down version of desktop Windows. It is not to be confused with Windows XP Embedded which is NT-based. It is supported on Intel x86 and compatibles, MIPS, ARM, and Hitachi SuperH processors.

Features

Windows CE is optimized for devices that have minimal storage—a Windows CE kernel may run in under a megabyte of memory. Devices are often configured without disk storage, and may be configured as a “closed” system that does not allow for end-user extension (for instance, it can be burned into ROM). Windows CE conforms to the definition of a real-time operating system, with a deterministic interrupt latency. It supports 256 priority levels and uses priority inheritance for dealing with priority inversion. The fundamental unit of execution is the thread. This helps to simplify the interface and improve execution time.

Microsoft has stated that the ‘CE’ is not an intentional initialism, but many people believe CE stands for ‘Consumer Electronics’ or ‘Compact Edition’; users often disparagingly called it “Wince”.[4] Microsoft says it implies a number of Windows CE design precepts, including “Compact, Connectable, Compatible, Companion, and Efficient.”[5] The first version, known during development under the codename “Pegasus”, featured a Windows-like GUI and a number of Microsoft's popular applications, all trimmed down for smaller storage, memory, and speed of the palmtops of the day.

Since then, Windows CE has evolved into a component-based, embedded, real-time operating system. It is no longer targeted solely at hand-held computers. Many platforms have been based on the core Windows CE operating system, including Microsoft's AutoPC, Pocket PC 2000, Pocket PC 2002, Windows Mobile 2003, Windows Mobile 2003 SE, Windows Mobile 5.0, Windows Mobile 6, Smartphone 2002, Smartphone 2003 and many industrial devices and embedded systems. Windows CE even powered select games for the Sega Dreamcast, was the operating system of the controversial Gizmondo handheld, and can partially run on modified Microsoft Xbox game consoles.

A distinctive feature of Windows CE compared to other Microsoft operating systems is that large parts of it are offered in source code form. First, source code was offered to several vendors, so they could adjust it to their hardware. Then products like Platform Builder (an integrated environment for Windows CE OS image creation and integration, or customized operating system designs based on CE) offered several components in source code form to the general public. However, a number of core components that do not need adaptation to specific hardware environments (other than the CPU family) are still distributed in binary form only.

Development tools

Visual Studio

Late versions of Microsoft Visual Studio support projects for Windows CE / Windows Mobile, producing executable programs and platform images either as an emulator or attached by cable to an actual mobile device. A mobile device is not necessary to develop a CE program. The .NET Compact Framework supports a subset of the .NET Framework with projects in C# and VB.NET, but not Managed C++.

Platform Builder

This programming tool is used for building the platform (BSP + Kernel), device drivers (shared source or custom made) and also the application. This is a one step environment to get the system up and running. One can also use Platform Builder to export an SDK (standard development kit) for the target microprocessor (SuperH, x86, MIPS, ARM etc.) to be used with another associated tool set named below.

Embedded Visual C++ (eVC)

The Embedded Visual C++ tool is for development of embedded application for Windows CE based devices. This tool can be used standalone using the SDK exported from Platform Builder or using the Platform Builder using the Platform Manager connectivity setup.

Relationship to Windows Mobile, Pocket PC, and SmartPhone

Often Windows CE, Windows Mobile, and Pocket PC are used interchangeably. This practice is not entirely accurate. Windows CE is a modular/componentized operating system that serves as the foundation of several classes of devices. Some of these modules provide subsets of other components' features (e.g. varying levels of windowing support; DCOM vs COM), others which are mutually exclusive (Bitmap or TrueType font support), and others which add additional features to another component. One can buy a kit (the Platform Builder) which contains all these components and the tools with which to develop a custom platform. Applications such as Excel Mobile/Pocket Excel are not part of this kit. The older Handheld PC version of Pocket Word and several other older applications are included as samples, however.

Windows Mobile is best described as a subset of platforms based on a Windows CE underpinning. Currently, Pocket PC (now called Windows Mobile Classic), SmartPhone (Windows Mobile Standard), and PocketPC Phone Edition (Windows Mobile Professional) are the three main platforms under the Windows Mobile umbrella. Each platform utilizes different components of Windows CE, as well as supplemental features and applications suited for their respective devices.

Pocket PC and Windows Mobile is a Microsoft-defined custom platform for general PDA use, and consists of a Microsoft-defined set of minimum profiles (Professional Edition, Premium Edition) of software and hardware that is supported. The rules for manufacturing a Pocket PC device are stricter than those for producing a custom Windows CE-based platform. The defining characteristics of the Pocket PC are the digitizer as the primary Human Interface Device and its extremely portable size.

The SmartPhone platform is a feature rich OS and interface for cellular phone handsets. SmartPhone offers productivity features to business users, such as email, as well as multimedia capabilities for consumers. The SmartPhone interface relies heavily on joystick navigation and PhonePad input. Devices running SmartPhone do not include a touchscreen interface. SmartPhone devices generally resemble other cellular handset form factors, whereas most Phone Edition devices use a PDA form factor with a larger display.

Windows Mobile 5 supports USB 2.0 and new devices running this OS will also conform to the USB Mass Storage Class, meaning the storage on PPC can be accessed from any USB-equipped PC, without requiring any extra software, except requiring a compliant host. In other words, you can use it as a flash drive.

Competing products

Competitors to consumer CE based PDA platforms like Pocket PC – the main application of Windows CE – are Java, Symbian OS, Palm OS, iPhone OS and Linux based packages like Qtopia Embedded Linux environment from Trolltech, Convergent Linux Platform from a La Mobile, and Access Linux Platform from Orange and Access.

The secondary usage of CE is in devices in need of graphical user interfaces, (point of sale terminals, media centers, web tablets, thin clients) as the main selling point CE is the look and feel being similar to desktop Windows. The competition is Windows XP, Linux and graphical packages for simpler embedded operating systems.

Being an RTOS, Windows CE is also theoretically a competitor to any realtime operating system in the embedded space, like VxWorks, ITRON or eCos. The dominating method, however, of mixing Windows look and feel with realtime on the same hardware, is to run double operating systems using some virtualization technology, like TRANGO Hypervisor from TRANGO Virtual Processors or Intime from TenAsys in the case of Windows, and OS Ware from VirtualLogix, Padded Cell from Green Hills Software, OKL4 from Open Kernel Labs, TRANGO Hypervisor from TRANGO Virtual Processors, RTS Hypervisor from Real-Time Systems or PikeOS from Sysgo, in case of the competition.

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Asymmetric Digital Subscriber Line (ADSL) is a form of DSL, a data communications technology that enables faster data transmission over copper telephone lines than a conventional voiceband modem can provide. It does this by utilizing frequencies that are not used by a voice telephone call. A splitter - or microfilter - allows a single telephone connection to be used for both ADSL service and voice calls at the same time. Because phone lines vary in quality and were not originally engineered with DSL in mind, it can generally only be used over short distances, typically less than 3mi (5.5 km) [William Stallings' book].

At the telephone exchange the line generally terminates at a DSLAM where another frequency splitter separates the voice band signal for the conventional phone network. Data carried by the ADSL is typically routed over the telephone company's data network and eventually reaches a conventional internet network. In the UK under British Telecom the data network in question is its ATM network which in turn sends it to its IP network IP Colossus.

The distinguishing characteristic of ADSL over other forms of DSL is that the volume of data flow is greater in one direction than the other, i.e. it is asymmetric. Providers usually market ADSL as a service for consumers to connect to the Internet in a relatively passive mode: able to use the higher speed direction for the "download" from the Internet but not needing to run servers that would require high speed in the other direction.

There are both technical and marketing reasons why ADSL is in many places the most common type offered to home users. On the technical side, there is likely to be more crosstalk from other circuits at the DSLAM end (where the wires from many local loops are close to each other) than at the customer premises. Thus the upload signal is weakest at the noisiest part of the local loop, while the download signal is strongest at the noisiest part of the local loop. It therefore makes technical sense to have the DSLAM transmit at a higher bit rate than does the modem on the customer end. Since the typical home user in fact does prefer a higher download speed, the telephone companies chose to make a virtue out of necessity, hence ADSL. On the marketing side, limiting upload speeds limits the attractiveness of this service to business customers, often causing them to purchase higher cost Digital Signal 1 services instead. In this fashion, it segments the digital communications market between business and home users

How ADSL works

On the wire

Currently, most ADSL communication is full duplex. Full duplex ADSL communication is usually achieved on a wire pair by either frequency division duplex (FDD), echo canceling duplex (ECD), or time division duplexing (TDD). FDM uses two separate frequency bands, referred to as the upstream and downstream bands. The upstream band is used for communication from the end user to the telephone central office. The downstream band is used for communicating from the central office to the end user. With standard ADSL (annex A), the band from 25.875 kHz to 138 kHz is used for upstream communication, while 138 kHz – 1104 kHz is used for downstream communication. Each of these is further divided into smaller frequency channels of 4.3125 kHz. During initial training, the ADSL modem tests which of the available channels have an acceptable signal-to-noise ratio. The distance from the telephone exchange, noise on the copper wire, or interference from AM radio stations may introduce errors on some frequencies. By keeping the channels small, a high error rate on one frequency thus need not render the line unusable: the channel will not be used, merely resulting in reduced throughput on an otherwise functional ADSL connection.

Vendors may support usage of higher frequencies as a proprietary extension to the standard. However, this requires matching vendor-supplied equipment on both ends of the line, and will likely result in crosstalk issues that affect other lines in the same bundle.

There is a direct relationship between the number of channels available and the throughput capacity of the ADSL connection. The exact data capacity per channel depends on the modulation method used.

[edit] Modulation

ADSL initially existed in two flavours (similar to VDSL), namely CAP and DMT. CAP was the de facto standard for ADSL deployments up until 1996, deployed in 90 percent of ADSL installs at the time. However, DMT was chosen for the first ITU-T ADSL standards, G.992.1 and G.992.2 (also called G.dmt and G.lite respectively). Therefore all modern installations of ADSL are based on the DMT modulation scheme.

Annexes J and M shift the upstream/downstream frequency split up to 276 kHz (from 138 kHz used in the commonly deployed annex A) in order to boost upstream rates. Additionally, the "all-digital-loop" variants of ADSL2 and ADSL2+ (annexes I and J) support an extra 256 kbit/s of upstream if the bandwidth normally used for POTS voice calls is allocated for ADSL usage.

While the ADSL access utilizes the 1.1 MHz band, ADSL2+ utilizes the 2.2 MHz band.

The downstream and upstream rates displayed are theoretical maxima. Note also that because Digital subscriber line access multiplexers and ADSL modems may have been implemented based on differing or incomplete standards some manufacturers may advertise different speeds. For example, Ericsson has several devices that support non-standard upstream speeds of up to 2 Mbit/s in ADSL2 and ADSL2+.

[edit] Installation issues

Due to the way it uses the frequency spectrum, ADSL deployment presents some issues. It is necessary to install appropriate frequency filters at the customer's premises, to avoid interferences with the voice service, while at the same time taking care to keep a clean signal level for the ADSL connection.

In the early days of DSL, installation required a technician to visit the premises. A splitter was installed near the demarcation point, from which a dedicated data line was installed. This way, the DSL signal is separated earlier and is not attenuated inside the customer premises. However, this procedure is costly, and also caused problems with customers complaining about having to wait for the technician to perform the installation. As a result, many DSL vendors started offering a self-install option, in which they ship equipment and instructions to the customer. Instead of separating the DSL signal at the demarcation point, the opposite is done: the DSL signal is "filtered off" at each phone outlet by use of a low pass filter, also known as microfilter. This method does not require any rewiring inside the customer premises.

A side effect of the move to the self-install model is that the DSL signal can be degraded, especially if more than 5 voiceband devices are connected to the line. The DSL signal is now present on all telephone wiring in the building, causing attenuation and echo. A way to circumvent this is to go back to the original model, and install one filter upstream from all telephone jacks in the building, except for the jack to which the DSL modem will be connected. Since this requires wiring changes by the customer and may not work on some household telephone wiring, it is rarely done. It is usually much easier to install filters at each telephone jack that is in use.

Q2: 关于大学计算机的专业英语文章 带翻译的 可以直接复制过来 别给网页链接 期末老师要我们写英语文章

有专门的计算机专业英语这本书的，在学校图书馆里看到过，

有原谅，有翻译。。。实在不行，直接到MSDN英文版本上复制几个，技术类的，然后google translate下，

再自己更正下，应该可以。

GDI方面的。。

GDI Overview

Ron Gery

Microsoft Developer Network Technology Group

Created: March 20, 1992

Abstract

This article provides a brief overview of the design and theory of the graphical component of the Microsoft® Windows™ graphical environment. No details are covered.

Overview

The graphical component of the Microsoft® Windows™ graphical environment is the graphics device interface (GDI). It communicates between the application and the device driver, which performs the hardware-specific functions that generate output. By acting as a buffer between applications and output devices, GDI presents a device-independent view of the world for the application while interacting in a device-dependent format with the device.

In the GDI environment are two working spaces—the logical and the physical. Logical space is inhabited by applications; it is the "ideal" world in which all colors are available, all fonts scale, and output resolution is phenomenal. Physical space, on the other hand, is the real world of devices, with limited color, strange output formats, and differing drawing capabilities. In Windows, an application does not need to understand the quirkiness of a new device. GDI code works on the new device if the device has a device driver.

GDI concepts mapped between the logical and the physical are objects (pens, brushes, fonts, palettes, and bitmaps), output primitives, and coordinates.

Objects are converted from logical objects to physical objects using the realization process. For example, an application creates a logical pen by calling CreatePen with the appropriate parameters. When the logical pen object is selected into a device context (DC) using SelectObject, GDI realizes the pen into a physical pen object that is used to communicate with the device. GDI passes the logical object to the device, and the device creates a device-specific object containing device-specific information. During realization, requested (logical) color is mapped to available colors, fonts are matched to the best available fonts, and patterns are prepared for output. Font selection is more complex than other realizations, and GDI, not the driver, performs most of the realization work. Similarly, palette realization (done at RealizePalette time as opposed to SelectPalette time) is done entirely within GDI. Bitmaps are an exception to the object realization process; although they have the device-independent bitmap (DIB) logical form, bitmap objects are always device specific and are never actually realized.

Output primitives are similarly passed as "logical" requests (to stretch the definition) to the device driver, which draws the primitive to the best of its ability and resolution. If the driver cannot handle a certain primitive—for example, it cannot draw an ellipse—GDI simulates the operation. For an Ellipse call, GDI calculates a polygon that represents a digitized ellipse. The resulting polygon can then be simulated as a polyline and a series of scanline fills if the device cannot draw polygons itself. The application, though, does not care what system component does the actual work; the primitive gets drawn.

An application can set up for itself any logical coordinate system, using SetMapMode, SetWindowExt, SetWindowOrg, SetViewportExt, and SetViewportOrg. In GDI that coordinate system is mapped to the device coordinate system, in which one unit equals one pixel and (0,0) defines the topmost, leftmost pixel on the output surface. The device driver sees only coordinates in its own space, whereas the application operates only in a coordinate space of its own, disregarding the physical pixel layout of the destination.

By maintaining the two separate but linked spaces, logical for the applications and physical for the devices, GDI creates a device-independent interface. Applications that make full use of the logical space and avoid device-specific assumptions can expect to operate successfully on any output device that comes down the turnpike.

VS方面的

Microsoft Visual Studio is an integrated development environment (IDE) from Microsoft. It can be used to develop console and graphical user interface applications along with Windows Forms applications, web sites, web applications, and web services in both native code together with managed code for all platforms supported by Microsoft Windows, Windows Mobile, Windows CE, .NET Framework, .NET Compact Framework and Microsoft Silverlight.

Visual Studio includes a code editor supporting IntelliSense as well as code refactoring. The integrated debugger works both as a source-level debugger and a machine-level debugger. Other built-in tools include a forms designer for building GUI applications, web designer, class designer, and database schema designer. It accepts plug-ins that enhance the functionality at almost every level—including adding support for source-control systems (like Subversion and Visual SourceSafe) and adding new toolsets like editors and visual designers for domain-specific languages or toolsets for other aspects of the software development lifecycle (like the Team Foundation Server client: Team Explorer).

Visual Studio supports different programming languages by means of language services, which allow the code editor and debugger to support (to varying degrees) nearly any programming language, provided a language-specific service exists. Built-in languages include C/C++ (via Visual C++), VB.NET (via Visual Basic .NET), C# (via Visual C#), and F# (as of Visual Studio 2010[2]). Support for other languages such as M, Python, and Ruby among others is available via language services installed separately. It also supports XML/XSLT, HTML/XHTML, JavaScript and CSS. Individual language-specific versions of Visual Studio also exist which provide more limited language services to the user: Microsoft Visual Basic, Visual J#, Visual C#, and Visual C++.

Microsoft provides "Express" editions of its Visual Studio 2010 components Visual Basic, Visual C#, Visual C++, and Visual Web Developer at no cost. Visual Studio 2010, 2008 and 2005 Professional Editions, along with language-specific versions (Visual Basic, C++, C#, J#) of Visual Studio 2005 are available for free to students as downloads via Microsoft's DreamSpark program. The 90-day trial version of Visual Studio can be downloaded by the general public at no cost.

Contents [hide]

1 Architecture

2 Features

2.1 Code editor

2.2 Debugger

2.3 Designer

2.4 Other tools

2.5 Extensibility

3 Supported products

3.1 Included products

3.2 Previous products

4 Editions

4.1 Visual Studio Express

4.2 Visual Studio LightSwitch

4.3 Visual Studio Professional

4.4 Visual Studio Premium

4.5 Visual Studio Tools for Office

4.6 Visual Studio Ultimate

4.6.1 Visual Studio Team System

4.7 Test Professional

4.8 Editions feature grid

5 Version history

5.1 Visual Studio 97

5.2 Visual Studio 6.0 (1998)

5.3 Visual Studio .NET (2002)

5.4 Visual Studio .NET 2003

5.5 Visual Studio 2005

5.6 Visual Studio 2008

5.7 Visual Studio 2010

5.7.1 Visual Studio Ultimate 2010

6 Visual Studio Application Lifecycle Management

7 Pre-installed virtual machines

8 References

9 External links

[edit]Architecture

Visual Studio does not support any programming language, solution or tool intrinsically. Instead, it allows plugging in various types of functionality. Specific functionality is coded as a VSPackage. When installed, the functionality is available as a Service. The IDE provides three services: SVsSolution, which provides the ability to enumerate projects and solutions; SVsUIShell, which provides windowing and UI functionality (including tabs, toolbars and tool windows); and SVsShell, which deals with registration of VSPackages. In addition, the IDE is also responsible for coordinating and enabling communication between services.[3] All editors, designers, project types and other tools are implemented as VSPackages. Visual Studio uses COM to access the VSPackages. The Visual Studio SDK also includes the Managed Package Framework (MPF), which is a set of managed wrappers around the COM-interfaces that allow the Packages to be written in any CLI compliant language.[4] However, MPF does not provide all the functionality exposed by the Visual Studio COM interfaces.[5] The services can then be consumed for creation of other packages, which add functionality to the Visual Studio IDE.

Support for programming languages is added by using a specific VSPackage called a Language Service. A language service defines various interfaces which the VSPackage implementation can implement to add support for various functionalities.[6] Functionalities that can be added this way include syntax coloring, statement completion, brace matching, parameter information tooltips, member lists and error markers for background compilation.[6] If the interface is implemented, the functionality will be available for the language. Language services are to be implemented on a per-language basis. The implementations can reuse code from the parser or the compiler for the language.[6] Language services can be implemented either in native code or managed code. For native code, either the native COM interfaces or the Babel Framework (part of Visual Studio SDK) can be used.[7] For managed code, the MPF includes wrappers for writing managed language services.[8]

Visual Studio does not include any source control support built in but it defines two alternative ways for source control systems can integrate with the IDE.[9] A Source Control VSPackage can provide its own customised user interface. In contrast, a source control plugin using the MSSCCI (Microsoft Source Code Control Interface) provides a set of functions that are used to implement various source control functionality, with a standard Visual Studio user interface.[10][11] MSSCCI was first used to integrate Visual SourceSafe with Visual Studio 6.0 but was later opened up via the Visual Studio SDK. Visual Studio .NET 2002 used MSSCCI 1.1, and Visual Studio .NET 2003 used MSSCCI 1.2. Visual Studio 2005, 2008 and 2010 use MSSCCI Version 1.3, which adds support for rename and delete propagation as well as asynchronous opening.[11]

Visual Studio supports running multiple instances of the environment (each with its own set of VSPackages). The instances use different registry hives (see MSDN's definition of the term "registry hive" in the sense used here) to store their configuration state and are differentiated by their AppId (Application ID). The instances are launched by an AppId-specific .exe that selects the AppId, sets the root hive and launches the IDE. VSPackages registered for one AppId are integrated with other VSPackages for that AppId. The various product editions of Visual Studio are created using the different AppIds. The Visual Studio Express edition products are installed with their own AppIds, but the Standard, Professional and Team Suite products share the same AppId. Consequently, one can install the Express editions side-by-side with other editions, unlike the other editions which update the same installation. The professional edition includes a superset of the VSPackages in the standard edition and the team suite includes a superset of the VSPackages in both other editions. The AppId system is leveraged by the Visual Studio Shell in Visual Studio 2008.[1

Q3: 求介绍VB的英文文献翻译

Visual Basic编程语言

1991年，美国微软公司推出了Visual Basic(可简称VB），目前的最新版本是VB 2008 Beta2(VB9)中文版。

Visual 意即可视的、可见的，指的是开发像windows操作系统的图形用户界面（Graphic User Interface,GUI）的方法，它不需要编写大量代码去描述界面元素的外观和位置，只要把预先建立好的对象拖放到屏幕上相应的位置即可。

Basic 实际上是一个短语的缩写，这个短语就是 Beginners all_purpose symbolic instruction code ，其中文意思为“初始者通用符号指令代码语言”。

Visual Basic有学习版、专业版和企业版三种版本，以满足不同的开发需要。学习版适用于普通学习者及大多数使用Visual Basic开发一般Windows应用程序的人员，但是；专业版适用于计算机专业开发人员，包括了学习版的全部内容功能以及Internet控件开发工具之类的高级特性；企业版除包含专业版全部的内容外，还有自动化构件管理器等工具，使得专业编程人员能够开发功能强大的组骨子里分布式应用程序。

VB是一种可视化的、面向对象和采用事件驱动方式的结构化高级程序设计语言，可用于开发Windows环境下的各类应用程序。它简单易学、效率高，且功能强大可以与Windowsr专业开发工具SDK相媲美。在Visual Basic环境下，利用事件驱动的编程机制、新颖易用的可视化设计工具，使用Windows内部的广泛应用程序接口（API）函数，以用动态链接库（DLL）、对象的链接与世隔嵌入（OLE）、开放式数据连接（ODBC）等技术，可以高效、快速地开发Windows环境下功能强大、图形界面丰富的应用软件系统。随着版本的提高，Visual Basic的功能也越来越强。5.0版以后，Visual Basic推出了中文版，与前个版本相比，其功能有了很大提升。

但是，功能再强大，Visual Basic仍然有一个缺点：在没有MSVBVM**.DLL的计算机上必须安装所需的DLL文件。用它可设计操作系统，不过，比较困难。

在二十一世纪初，microsoft公司推出Visual Studio 2003与Visual Basic之间有了重大变化，Visual Studio为各种编程工具做了一个平台，Visual Basic.NET可在这种平台上运行。相对于传统VB，有很大的不同。VB.Net，首次使用.Net构架进行可视化编程，并且能很好地与COM构架兼容。2005年Visual Studio 2005则运用了NET 2.0的技术，更加的方便了程序员的工作。可是新的程序对系统配置要求也较高，需要微软.Net Framework 2.0以上的.Net构架支持。

2007年12月,微软(Microsoft)推出了Visual Studio 2008 Beta 2 发生了重大的变化(见附图)在代码输入的时候,可以比VB2005快很多,在非特殊的情况下,VB2008都会自动开启 自动完成关键字 这个命令 而且开始支持最新的.NET Framework 3.5 Beta 2

Visual Basic programming language

1991, the United States launched the Microsoft Visual Basic (may be referred to VB), is the latest version of the current VB 2008 Beta2 (VB9) Chinese version.

Visual meaning the visual, visible, referring to the development of operating systems like windows graphical user interface (Graphic User Interface, GUI) method, it does not need to prepare a large number code to describe the appearance of the interface elements and location, as long as the pre - The establishment of good drag and drop objects on the screen corresponding to the location.

Basic is actually an abbreviation of the phrase, this phrase is Beginners all_purpose symbolic instruction code, the Chinese meaning "to the initial directive GM symbol code language."

Visual Basic learning, Professional Edition and Enterprise Edition versions to meet the different needs of the development. Study and apply to the ordinary version of the majority of learners and the use of Visual Basic development of the general staff of Windows applications, but; professional version for computer professional development of staff, including the study of functional version of the full content control and Internet development tools such as advanced features ; Enterprise contain not only all the professional version of the content, there are automated tools such as Component Manager, professional programmers to make the development of a powerful group essence of distributed applications.

VB is a visual, object-oriented event-driven approach and the use of the structure of high-level programming language, can be used for the development of the Windows environment of various applications. It easy to learn, efficient and powerful with Windowsr professional development tools comparable to SDK. In Visual Basic environment, the use of event-driven programming mechanism, the new easy-to-use visual design tools, within the wider use Windows application program interface (API) function, to use dynamic link library (DLL), the object Links embedded with the World at (OLE), open-end data connectivity (ODBC), and other technology, can be highly efficient and rapid development of the Windows environment powerful, rich graphical interface application software system. With the improved version, Visual Basic functions also growing. After version 5.0, Visual Basic launched a Chinese version, compared with the previous version, its functions have been greatly improve.

However, more powerful functions, Visual Basic still has one drawback: in the absence of MSVBVM **. DLL must be installed on the computer the required DLL file. It can be designed with the operating system, but more difficult.

In the early 21st century, microsoft has introduced Visual Studio 2003 and Visual Basic among the significant changes, Visual Studio for a variety of programming tools to a platform, Visual Basic.NET can run on this platform. Compared with traditional VB, are quite different. VB.Net, used for the first time. Net framework for visual programming, and can a good framework compatible with COM. 2005 Visual Studio 2005则use of the NET 2.0 technology, more convenience to the programmer's work. But the new procedures on the system configuration requirements are also higher, the need for Microsoft. Net Framework 2.0 above. Net framework support.

December 2007, Microsoft (Microsoft) launched the Visual Studio 2008 Beta 2 has undergone major changes (see attached map) enter in the code when the VB2005 can be much faster than in non-exceptional circumstances, VB2008 will automatically open automatically Keyword completion of this order and begun to support the latest. NET Framework 3.5 Beta 2

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