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When you create a file that has a long file name, Windows XP Professional creates a conventional 8.3 name for the file and one or more secondary folder entries for the file, one for each set of 13 characters in the long file name. Each secondary folder entry stores a corresponding part of the long file name in Unicode. MS-DOS accesses the file by using the conventional 8.3 file name contained in the folder entry for the file. Windows XP Professional marks the secondary folder entries as part of a long file name by setting the volume ID, read-only, system, and hidden attribute bits. MS-DOS typically ignores folder entries with all these attribute bits set. Figure 13-19 shows all the folder entries for the file Thequi~1.fox, which has a long name of The quick brown.fox . The long name is in Unicode, so each character in the name uses 2 bytes in the folder entry. The attribute field for the long-name entries has the value 0x0F. The attribute field for the short name has the value 0x20.

0x42

0x0000

If you are logging on to different remote computers, you can double-click the appropriate .rdp file, and the connection will be launched automatically.

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Code snippets were invented for only one reason developer productivity. The code snippets in C# are related to language constructs but can be extended to include other code snippets. In Visual C# you can add code snippets in two ways: You can insert them, or by using an existing block of code, you can surround that block of code with a code snippet. The first option is simple. At any point in your source code you can right-click, select Insert Snippet , and then select the code snippet that best fits the context. The second option needs a bit more explanation. Let s say you have an existing block of code that reads a line of text in a file and then parses some data. In the process of developing your application, you realize you need the code to read the whole file, not only one line. This means you need to add a looping construct. With the Surround With option it s quite easy to add the block of code to do the looping. You just have to select the block of code you want to have in a loop, right-click, and select Surround With . Then you need to select the instruction you want to surround your block of code with. In this example, you would surround the code with a while statement. Then you just have to double-click the while statement, and your code will be automatically embedded in the while block.

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If you don t have access to the full version of Remote Desktop from the computer you have available (for example, you might be logging on from a public computer in an airport terminal or library), you can open a Remote Desktop session using Internet Explorer 4 or later if the Windows XP Professional remote computer is configured to allow you to do so. However, this process requires the use of IIS, and because Web servers are the most commonly attacked networking software, it s important to recognize the responsibility you ll have for configuring and securing IIS once it s running. For more information, see Securing IIS, page 577.

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Figure 13-19

Windows NT and Windows XP Professional do not use the same algorithm to create long and short file names as Windows 95, Windows 98, and Windows Me. However, on computers that use a multiple-boot configuration to start these operating systems, files that you create while running one operating system can be accessed while running another.

If you want to access Windows XP Professional Remote Desktop connections using Internet Explorer, you have to configure IIS to allow the connection. If you do not have IIS currently installed or you need to learn more about IIS, see 9, Using Internet Information Services. To configure IIS to allow Remote Desktop, you must run the Remote Desktop Web Connection software. Follow these steps:

For more information about how Windows XP Professional creates short file names, see File Names in Windows XP Professional later in this chapter.

Part II:

1 Open Add Or Remove Programs in Control Panel. 2 Select Add/Remove Windows Components. 3 When the Windows Components Wizard appears, select Internet Information

By default, Windows XP Professional supports long file names on FAT volumes. You can disable long file names on FAT volumes if you use MS-DOS based disk tools regularly on the computer. These tools might either eliminate the long file names created by Windows XP Professional or delete the files that have long file names. To prevent a FAT file system from creating long file names, set the value of the Win31FileSystem registry entry (in the subkey HKEY_LOCAL_MACHINE\SYSTEM\ CurrentControlSet\Control\FileSystem) to 1. This value prevents Windows XP Professional from creating new long file names on all FAT volumes. However, existing long file names remain intact but are not displayed in My Computer, in Windows Explorer, or at the command prompt. Caution