Assembly: System.Windows.Forms (in system.windows.forms.dll)
A Control that specifies the control for which to set the Help topic.
The Help keyword to associate with the control.
The Help keyword provides the key information to retrieve the Help associated with this control from the Help file specified by the HelpNamespace property. To open Help to a specific topic, the keyword should be passed in the form topicName.htm. To clear the keyword, call the SetHelpKeyword method with a keyword value of a null reference (Nothing in Visual Basic).
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.