HelpProvider.SetHelpKeyword Method (Control, String)
Specifies the keyword used to retrieve Help when the user invokes Help for the specified control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
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 method with a keyword value of null.
Available since 1.1