1、 河北科技师范学院 本科毕业设计外文翻译 ASP.NET Overview 院（系、部） 名 称 ： 数学与信息科技学院 专 业 名 称： 网络工程 学 生 姓 名： 张三 学 生 学 号： 0913080104 指 导 教 师： 张三 2011 年 11 月 21 日 河北科技师范学院教务处制 1 ASP.NET and the .NET Framework ASP.NET is part of Microsofts overall .NET framework, which contains a vast set of programming classes designed to sat
2、isfy any conceivable programming need. In the following two sections, you learn how ASP.NET fits within the .NET framework, and you learn about the languages you can use in your ASP.NET pages. The .NET Framework Class Library Imagine that you are Microsoft. Imagine that you have to support multiple
3、programming languages such as Visual Basic, JScript, and C+. A great deal of the functionality of these programming languages overlaps. For example, for each language, you would have to include methods for accessing the file system, working with databases, and manipulating strings. Furthermore, thes
4、e languages contain similar programming constructs. Every language, for example, can represent loops and conditionals. Even though the syntax of a conditional written in Visual Basic differs from the syntax of a conditional written in C+, the programming function is the same. Finally, most programmi
5、ng languages have similar variable data types. In most languages, you have some means of representing strings and integers, for example. The maximum and minimum size of an integer might depend on the language, but the basic data type is the same. Maintaining all this functionality for multiple langu
6、ages requires a lot of work. Why keep reinventing the wheel? Wouldnt it be easier to create all this functionality once and use it for every language? The .NET Framework Class Library does exactly that. It consists of a vast set of classes designed to satisfy any conceivable programming need. For ex
7、ample, 2 the .NET framework contains classes for handling database access, working with the file system, manipulating text, and generating graphics. In addition, it contains more specialized classes for performing tasks such as working with regular expressions and handling network protocols. The .NE
8、T framework, furthermore, contains classes that represent all the basic variable data types such as strings, integers, bytes, characters, and arrays. Most importantly, for purposes of this book, the .NET Framework Class Library contains classes for building ASP.NET pages. You need to understand, how
9、ever, that you can access any of the .NET framework classes when you are building your ASP.NET pages. Understanding Namespaces As you might guess, the .NET framework is huge. It contains thousands of classes (over 3,400). Fortunately, the classes are not simply jumbled together. The classes of the .
10、NET framework are organized into a hierarchy of namespaces. ASP Classic Note In previous versions of Active Server Pages, you had access to only five standard classes (the Response, Request, Session, Application, and Server objects). ASP.NET, in contrast, provides you with access to over 3,400 class
11、es! A namespace is a logical grouping of classes. For example, all the classes that relate to working with the file system are gathered together into the System.IO namespace. The namespaces are organized into a hierarchy (a logical tree). At the root of the tree is the System namespace. This namespace contains all the classes for
