c# calculate upc check digit Using Internet Explorer 7 in C#

Encoding UPC-A in C# Using Internet Explorer 7

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The Favorites Center replaces the old Explorer bars along the left side of the browser window. To open it, press Alt+C or click the gold star icon to the left of the row of browser tabs. The name of the Favorites Center is slightly misleading: in addition to Favorites, it displays the browser s history and allows you to navigate through RSS feeds to which you ve subscribed using Internet Explorer 7. By default, the Favorites Center opens as a drop-down pane (as in the example in Figure 6-4) and disappears after you make a selection. Click any of the icons at the top of the pane to change the view. To lock the pane into place, click the Pin Favorites Center button.

Figure 6-4 The blue arrow to the right of a folder opens all pages in that folder in new tabs. Click the blue arrow to the right of a favorite to open that link in a new tab.

Internet Explorer 7 allows you to customize a limited number of settings that affect the behavior of tabbed browsing. To see all available options, click Internet Options on the Tools menu (or in Control Panel) and click the Settings button under the Tabs section on the General tab. Figure 6-5 shows the options available in the Tabbed Browsing Settings dialog box.

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Figure 6-5 Use any of the options shown here to change the behavior of tabbed browsing or disable it completely.

Most of the options shown here are self-explanatory. The most radical option, of course, is the check mark at the top of the dialog box, which allows you to completely disable tabbed browsing and configure Internet Explorer so every page opens in its own window. Two other options deserve special mention:

Open Only The First Home Page When Internet Explorer Starts This option allows you to define multiple pages as your home page without slowing you down when you first open Internet Explorer. By selecting this option, you load only the top item in the Home Page list at startup but can open all the pages in that list later by clicking the Home Page icon on the Command bar. Open New Tabs Next To The Current Tab If you regularly keep a large number of tabs open, consider disabling this option, which is on by default. If you have 15 tabs open and you click to open a new tab in the background, you might have trouble finding the newly opened page in the list. With this option cleared, new tabs always appear at the right side of the tab row, and you can drag them into a different position if you prefer.

Internet Explorer 7 provides two ways to search for information on the internet without actually visiting a website. The easiest alternative is to enter search terms in the Instant Search box in the top right corner of the browser window and click the Search button. You can also enter search terms directly in the Address bar and click Go. Internet Explorer attempts to parse whatever you type in the Address bar into a URL (an internet address). If it cannot do so, it hands your entry off to the default search provider. (In either case, you can press Enter to execute the search as well.)

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Two search-speci c keyboard shortcuts in Internet Explorer are well worth learning. Press Ctrl+E to position the insertion point in the Instant Search box and begin entering search terms. Press Alt+Enter to display the search results in a separate tab instead of replacing the contents of the current tab.

If you installed Windows Vista as an upgrade on a system using Internet Explorer 6, you re prompted to choose a default search provider when you first open Internet Explorer 7. With a clean install, the default search provider is set to Windows Live search. In either case, you can change the default search provider and add other search providers to the list of available search engines. The drop-down arrow to the right of the Instant Search box allows you to send the current search terms to a site other than the default search provider.

To customize the list of available search providers, click Find More Providers. This leads to Microsoft s Add Search Provider s page, where you can choose from a long list of websites. Click a link to display the dialog box shown here and add the provider to the list. (A separate link leads to a Global Search Guides page with customized listings for other countries and languages.)