Help Sources: Local Help and Online Help
You can access product documentation from two different sources, as follows: local Help, which is installed on your computer and online Help, which is on the Internet. If you use local Help by itself, then only topics from the Help installed on your computer are found when you search or press F1. If you include online Help together with local Help, then your search and F1 results are expanded to include MSDN Online content and MSDN forums, and also content found on the Web sites of the Codezone Community, which is a group of Microsoft partners.
If you access the Internet through a proxy server, you may be prompted to enter the proxy server credentials the first time that you try to use an online Help feature.
The following table compares the two Help sources.
Local Help refers to Help files that you have you installed on your computer during setup or that you access from CDs or DVDs. This content is a static snapshot of the product documentation at the time the documentation was published. Local Help is not updated automatically with new content. Local Help is only updated if you install updated Help files to your computer or receive updated CDs or DVDs.
Online Help consists of three default sources: MSDN Online, forum messages (called Questions), and Codezone Community. These sources are available for F1 Help results and during search, but are not integrated into the Index or Contents windows of Document Explorer.
MSDN Online contains the latest versions of the content in the MSDN documentation set. This includes the latest quarterly releases. In addition, MSDN Online publishes new technical articles, samples, and white papers regularly.
Questions lets you automatically search the archives for forum messages that can be found on MSDN Online, for example, the Visual Studio Setup and Installation forum.
Codezone Community is a group of third-party Web sites that have partnered with Microsoft to provide additional content for Help. This content can include technical articles and samples, among other formats.
The first time that you access Help by pressing F1 or searching, the Online Help Settings Dialog Box appears. You can use the dialog box to specify whether you want to include online Help sources. You can decide to use only local Help, check online Help first, or check online Help only after checking local Help.
You can change your choice at any time by using the Online, Help, Options Dialog Box.
F1 and Online Help
If you decide to use online Help as your primary Help source and you have an active Internet connection, when you press F1 a topic is downloaded from MSDN Online. By using online Help for F1 results, you can access the latest Help information available.
If you decide to use local Help first and press F1 when part of the Visual Studio user interface (UI) is selected, Document Explorer searches the Help installed on your computer. If Document Explorer cannot find a local Help topic for the UI, it then searches MSDN Online for the appropriate topic. For more information, see How to: View Alternative F1 Help Results.
Search and Online Help
If you decide to include online Help and you have an active Internet connection, topics are listed from both local and online sources every time that you search. When you include online Help in your seaches, you can access the latest information on MSDN Online, in forum archives, and on Codezone Community Web sites.
In Search Results, topics are grouped by their source. For example, if you decide to include MSDN Online and Codezone Community together with local Help in your searches, three groups of search results will be returned, one for each source. You can view results from each source individually. For more information, see How to: Include Online Content in Search and F1 Help Results.