.net pdf library extract text

.net pdf library extract text

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The list of namespaces in table 1.1 includes only the more commonly used namespaces, most of which are used in examples in the chapters that follow. 1.4.2 Programming with the .NET Framework classes Namespaces provide a convenient way to logically group related classes together. They also prevent name clashes where two or more classes have the same name, but reside in different namespaces. The classes themselves physically reside in DLL files that are shipped with the .NET Framework. Depending on the version of .NET you are using, these DLLs can be found in the C:\WINNT\Microsoft.NET\Framework\<.NET Version> directory. The most common classes reside in the core library file, mscorlib.dll. When you use classes that reside in other DLLs, you must refer to the DLL when you compile your program. For example, the SecurityIdentity class from the System.EnterpriseServices namespace resides in the System.Enterpriseservices.dll. To compile a C# program that uses this class, you need to use the C# compiler s /reference option and provide the DLL name:

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Before you start creating Web pages in Word, you should review Word s Web page related options. Setting options might sound a little tedious compared to the prospect of creating Web pages, but controlling your working environment up front can save you headaches later. By paying attention to the Web options, you ll also give yourself a chance to think about your Web pages before you get started, and you ll be alerted to the types of details you might have to take into consideration. The options discussed in this part of the chapter can be found in the Web Options dialog box, which you can access by choosing Tools, Options, clicking the General tab, and then clicking Web Options. The first tab in the Web Options dialog box is the Browser tab, so we ll start there.

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In some cases, the standard authentication options provided by Windows are not appropriate for your applications, and you will need to design your own form of authentication. Fortunately, the .NET Framework provides options to help you design a custom authentication solution. The .NET Framework supports an implementation of IIdentity, called GenericIdentity. You can use GenericIdentity, or create your own custom identity class. Designing a custom authentication solution can be difficult, because you have to take your own steps to ensure that the method is secure. You may also have to maintain a separate store for your identities.

When you create Web pages, you have to consider how people will be viewing your pages. One detail to consider is the range of browsers your audience will be using. If you re publish ing Web pages on an intranet for your company, chances are that most users will be using the same browser and similar computer configurations in that case, design considerations are easy because you can design for the company standard. On the other hand, if you re planning to post your pages on the Internet for people around the world, you ll have to take a broader approach to design because you won t know how users will be viewing your pages. (Will they use Macs, PCs, Microsoft Internet Explorer, Netscape Navigator, or something else ) In those cases, you need to define which browsers and which versions of those browsers you re going to cater to as you design your Web pages. Word helps you design a particular browser standard, which means that working within browser and version limitations is easier than it sounds. In Word, you can turn on or off fea tures not supported by selected Web browsers. To configure this setting, follow these steps:

The Web Options dialog box appears, as shown in Figure 26-3.

Or, for short:

2 Click the Browsers tab, if necessary. 3 Ensure that the Disable Features Not Supported By These Browsers check box is

Figure 26-3. The Web Options dialog box provides options for specifying how Word handles some Web page creation tasks.

If you clear the Disable Features Not Supported By These Browsers check box, you will be able to use every Web page feature built into Word regardless of whether any browser version can support it. In this case, more isn t better because you could very easily design a page that few people can view.

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