【正文】 it is a stackallocated type that can implement interfaces but does not support inheritance. In addition to these basic objectoriented principles, C facilitates the development of software ponents through several innovative language constructs, including: ? Encapsulated method signatures called delegates, which enable typesafe event notifications. ? Properties, which serve as accessors for private member variables. ? Attributes, which provide declarative metadata about types at run time. ? Inline XML documentation ments. If you need to interact with other Windows software such as COM objects or native Win32 DLLs, you can do this in C through a process called Interop. Interop 19 enables C programs to do just about anything that a native C++ application can do. C even supports pointers and the concept of unsafe code for those cases in which direct memory access is absolutely critical. The C build process is simple pared to C and C++ and more flexible than in Java. There are no separate header files, and no requirement that methods and types be declared in a particular order. A C source file may define any number of classes, structs, interfaces, and events. C programs run on the .NET Framework, an integral ponent of Windows that includes a virtual execution system called the mon language runtime (CLR) and a unified set of class libraries. The CLR is Microsoft39。 Web servers can be achieved. In the process of achieving website, technology selection is very important. Former major use HTML language, the stronger the interactive website, the proposed use of ASP, JSP, PHP and other programming to help achieve, the more plex Web site may also have its own database. The latter is based on all kinds of different operating systems used Web server software installation and debugging. This stage is the whole process of the most important and most timeconsuming part. When we pleted the work, the need for website released. At this stage of the production on the website drawing to a close, the main task is to do a good job in the website release to the work, the web site for final modifications, testing, homepage can guarantee normal operation of the work. Published in the website after website to deal with various aspects of the tests, including the possibility of any different web browsers, different visitors have shown normal, ASP, JSP, PHP normal procedure can work, and so on. This stage is the website of trial operation period, the website at this time should be to make up for various shortings, the website will be more perfected. After a period of operation, the site entered the normal operation period, the main task is to update outdated information website, the visitor39。 (3) Visual Design。s work and lifestyle, the Inter, openness and sharing of information model, breaking the traditional mode of information dissemination many barriers for people with new opportunities. With puters and the advent of the information age, the pace of the advance of human society in gradually accelerated. In recent years the development of web design, fast people occupied. With the development of web design, a colorful online website together one scenic beauty. To design aesthetic and practical web site should be thoroughly master the building techniques. In building site, we analyzed the websites of objectives, contents, functions, structure, the application of more web design technology. 2, the definition of website How definition of websites Web site identified the tasks and objectives, the building site is the most important issue. Why people will e to your website? You have a unique service? The first people to your website is to what? They will e back? All these issues must be taken into account when the site definition of the problem. Definition site to, first of all, the entire site must have a clear understanding of what the design should understand in the end, the main purpose of the mission, how to carry out the task of anization and planning. Second, to maintain the highquality Web site. Many websites in the face of strong petition from highquality product is the greatest longterm petitive advantage. An excellent Web site should have the following: (1) users visit Web site is faster. (2) attention to the feedback and updates. To update the content of the website and timely feedback the user39。典型的 C 應(yīng)用程序使用 .NET Framework 類(lèi)庫(kù)廣泛地處理常見(jiàn)的 “ 日常 ” 任務(wù)。 9 語(yǔ)言互操作性是 .NET Framework 的一個(gè)關(guān)鍵功能。然后，如果符合安全要求， CLR 執(zhí)行實(shí)時(shí) (JIT) 編譯以將 IL 代碼轉(zhuǎn)換為本機(jī)機(jī)器指令。 用 C 編寫(xiě)的源代碼被編譯為一種符合 CLI 規(guī)范的中間語(yǔ)言 (IL)。 C 源文件可以定義任意數(shù)量的類(lèi)、結(jié)構(gòu)、接口和事件。互操作使 C 程序能夠完 8 成本機(jī) C++ 應(yīng)用程序可以完成的幾乎任何任務(wù)。 ? 屬性 (Property)，充當(dāng)私有成員變量的訪問(wèn)器。類(lèi)可能直接從一個(gè)父類(lèi)繼承，但它可以實(shí)現(xiàn)任意數(shù)量的接口。 C 還支持泛型方法和類(lèi)型，從而提供了更出色的類(lèi)型安全和性能。 C 語(yǔ)法表現(xiàn)力強(qiáng)，只有不到 90 個(gè)關(guān)鍵字 ，而且簡(jiǎn)單易學(xué)。使用設(shè)計(jì)器可以為控件生成設(shè)計(jì)時(shí)用戶(hù)界面，這樣開(kāi)發(fā)人員可以在可視化設(shè)計(jì)工具中配置控件的屬性和內(nèi)容。 包括一個(gè)可擴(kuò)展的宿主環(huán)境，該環(huán)境控制應(yīng)用程序的生命周期，即從用戶(hù)首次訪問(wèn)此應(yīng)用程序中的資源（例如頁(yè)）到應(yīng)用程序關(guān)閉這一 期間。 支持 XML Web services。這些事件顯示診斷和監(jiān)視特征的組合，并在記錄哪些事件以及如何記錄事件等方面提供了高度的靈活性。由于這些 XML 文件是 6 ASCII 文本文件，因此對(duì) Web 應(yīng)用程序進(jìn)行配置更改比較簡(jiǎn)單。 提供了分布式狀態(tài)功能，使您能夠管理一臺(tái)計(jì)算機(jī)或數(shù)臺(tái)計(jì)算機(jī)上同一應(yīng)用程序的多個(gè)實(shí)例的狀態(tài)信息。 始終使用特定的 Windows 標(biāo)識(shí)運(yùn)行，因此，您可以通過(guò)使用 Windows 功能（例如 NTFS 訪問(wèn)控制列表 (ACL)、數(shù)據(jù)庫(kù)權(quán)限等等）來(lái)保護(hù)應(yīng)用程序的安全。 除了 .NET 的安全功能外， 還提 供了高級(jí)的安全基礎(chǔ)結(jié)構(gòu)，以便對(duì)用戶(hù)進(jìn)行身份驗(yàn)證和授權(quán)，并執(zhí)行其他與安全相關(guān)的功能。當(dāng)用戶(hù)請(qǐng)求內(nèi)容頁(yè) 5 時(shí)，這些內(nèi)容頁(yè)與母版頁(yè)合并，產(chǎn)生將母版頁(yè)的布局與內(nèi)容頁(yè)中的內(nèi)容組合在一起的輸出。可以先定義主題和外觀，然后在頁(yè)面級(jí)或控件級(jí)應(yīng)用這些主題和外觀。 使用 頁(yè)和控件框架還可以將常用的 UI 功能封裝成易于使用且可重用的控件。 網(wǎng)頁(yè)是完全面向?qū)ο蟮??？梢詮娜魏螢g覽器或客戶(hù)端設(shè)備請(qǐng)求 網(wǎng)頁(yè)， 會(huì)向請(qǐng)求瀏覽器呈現(xiàn)標(biāo)記（例如 HTML）。當(dāng)您編寫(xiě) 應(yīng)用程序的代碼時(shí)，可以訪問(wèn) .NET Framework 中的類(lèi)。 以上就是建站要大體遵循的七個(gè)步驟，這七個(gè)步驟是相輔相成的，但可根據(jù)網(wǎng)頁(yè)的難易程度和復(fù)雜度適當(dāng)增強(qiáng)或減弱某個(gè)環(huán)節(jié)。到了這個(gè)階段，網(wǎng)頁(yè)制作就接近尾聲，主要工作是把做好的網(wǎng)頁(yè)發(fā)布到網(wǎng)絡(luò)上，對(duì)網(wǎng)頁(yè)作最后的修改、測(cè)試，保證網(wǎng)頁(yè)能在網(wǎng)絡(luò)上正常地運(yùn)行。前者主要使用 HTML 語(yǔ)言，對(duì)于交互性較強(qiáng)的網(wǎng)站來(lái)說(shuō)，建議采用 ASP、JSP、 PHP 等編程來(lái)輔助實(shí)現(xiàn)，更為復(fù)雜的網(wǎng)站可能還會(huì)有自己的數(shù)據(jù)庫(kù)。這個(gè)過(guò)程是整個(gè)網(wǎng)站規(guī)劃中的關(guān)鍵。 在進(jìn)行完系統(tǒng)分析之后，我們就應(yīng)該進(jìn)行系統(tǒng)的設(shè)計(jì)。它是眾多腳本語(yǔ)言中較為優(yōu)秀的一種。 應(yīng)用 javascript 設(shè)計(jì)網(wǎng)頁(yè) javascript 的出現(xiàn)使得信息和用戶(hù)之間不僅只是一種顯示和瀏覽的關(guān)系 ,而是實(shí)現(xiàn)了一種