Help.ShowHelp Method (Control, String, HelpNavigator)
Displays the contents of the Help file found at the specified URL for a specific topic.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
The following code example demonstrates how to use the ShowHelp method to open a Help file to its index page. To run this example, paste the following code into a form that contains a button named Button2.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.