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VB2008从入门到精通(PDF格式英文版)-第10章

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Frameworks are used。  3。0 gives you all of the essentials; and  3。5 gives you the extras。 



     For the examples in this book; you’ll be using Visual Basic 2008 Express Edition; because  

it’s freely available and has everything you need to get started with Visual Basic 2008。 The other  

Express Edition IDEs available from Microsoft are tailored to different languages (C# and C++)  

or; in the case of Visual Web Developer Express; specific functionality that is too restrictive for  

our purposes。  



                                                                                                                        1 


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2         CH AP T E R   1   ■    R E A DY ;   ST E A DY ;   G O ! 



                Microsoft also offers full versions of the Visual Studio IDE; such as the Standard; Professional;  

           and Team editions。 Each of these editions has different features and different price tags。 See the  

           Microsoft Visual Studio web site (http://msdn2。microsoft。/en…us/vstudio/default。aspx) for  

           more information。 If you already have Visual Studio 2008 Professional; you can use that for the  

           examples in this book。 That edition can do everything that Visual Basic 2008 Express can do;  

           and in fact; has many more options。 



           ■Note  I personally use Visual Studio Standard or Professional in bination with other tools such  

           as X…develop and JustCode! from Omnicore (http://omnicore。); TestDriven ( http:// 

           testdriven/); and NUnit ( http://nunit。org)。 The Visual Studio products are very good;  

           but others are available。 Being a good developer means knowing which tools work best for you。 



                Installing and downloading Visual Basic Express from the Microsoft web site involves the  

           transfer of large files。 If you do not have a broadband connection; I suggest that you install the  

           IDE from a CD instead。 



           Downloading Visual Basic Express 



           The following is the procedure for downloading Visual Basic Express from the Microsoft web  

           site。 By the time you are reading this book; the procedure may be a bit different; but it will be  

           similar enough that you’ll be able to find and download the IDE package。 



                1。  Go to http://microsoft。/express/。 



                2。  Select the Download Now! link。 



                3。  Scroll down to the Visual Basic 2008 Express Edition section; as shown in Figure 1…1。 



                4。  Click the Download link。 



                5。  A dialog box appears; asking where you want to store the downloaded file。 The file that  

                    you are downloading is a small bootstrap file; which you’ll use to begin the actual  

                    installation of the Visual Basic Express IDE。 Choose to save the file on the desktop。 



                These steps can be carried out very quickly—probably within a few minutes。 Do not mistake  

           this procedure for downloading the plete Visual Basic Express application; because that’s  

           not what happened。 The installation procedure will download the vast majority of the IDE。 


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Figure 1…1。 Selecting Visual Basic 2008 Express Edition 



Installing Visual Basic Express 



After you’ve downloaded the setup file; you can start the Visual Basic Express installation。  

During this process; all the pieces of the IDE—about 300MB—are downloaded and installed。  

Follow these steps: 



     1。  On your desktop; double…click the vbsetup。exe file。 Wait while the setup program loads  

         all the required ponents。 



     2。  Click Next on the initial setup screen。 



     3。  A series of dialog boxes will appear。 Select the defaults and click Next to continue  

         through the setup program。 In the final dialog box; click Install。  



     4。  After all the elements have been downloaded and installed; you may need to restart  

         your puter。 



     After Visual Basic Express is installed; you can start it by selecting it from the Start menu。 



Choosing the Application Type 



With Visual Basic Express running; you’re ready to write your first  application。 However;  

first you need to make a choice: what type of application will you write? Broadly speaking; in  

; you can develop three main types of programs:  


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               o  A console application is designed to run at the mand line with no graphical user  

                  interface (GUI)。 



               o  A  Windows application is designed to run on a user’s desktop and has a GUI。 



               o  A class library holds reusable functionality that can be used by console and Windows  

                  applications。 It cannot be run by itself。 



                So that you know what each type of program is about; in this chapter; you will code all  

           three。 They are all variations of the Hello; World example; which displays the text “hello; world”  

           on the screen。 Hello; World programs have been used for decades to demonstrate program

           ming languages。 



           Creating Projects and Solutions 



           Regardless of which program type you are going to code; when using the Visual Studio line of  

           products; you will create projects and solutions: 



               o  A project is a classification used to describe a type of  application。  



               o  A solution is a classification used to describe multiple  applications that most likely  

                  relate to each othe
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