Provides pop-up or online Help for controls.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Gets a value indicating whether the component can raise an event.(Inherited from Component.)
Gets or sets a value specifying the name of the Help file associated with thisobject.
Gets or sets the object that contains supplemental data about the.
Specifies whether this object can provide its extender properties to the specified object.
Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.(Inherited from MarshalByRefObject.)
Determines whether the specified object is equal to the current object.(Inherited from Object.)
Serves as the default hash function. (Inherited from Object.)
Returns the Help keyword for the specified control.
Returns the current HelpNavigator setting for the specified control.
Returns the contents of the pop-up Help window for the specified control.
Retrieves the current lifetime service object that controls the lifetime policy for this instance.(Inherited from MarshalByRefObject.)
Returns a value indicating whether the specified control's Help should be displayed.
Obtains a lifetime service object to control the lifetime policy for this instance.(Inherited from MarshalByRefObject.)
This API supports the product infrastructure and is not intended to be used directly from your code. Removes the Help associated with the specified control.
Specifies the keyword used to retrieve Help when the user invokes Help for the specified control.
Specifies the Help command to use when retrieving Help from the Help file for the specified control.
Specifies the Help string associated with the specified control.
Specifies whether Help is displayed for the specified control.
This API supports the product infrastructure and is not intended to be used directly from your code. Returns a string that represents the current Component.ToString().).(Overrides
Each instance of HelpNamespace property. You specify the type of Help provided by calling the SetHelpNavigator method and providing a HelpNavigator value for the specified control. You provide the keyword or topic for the Help by calling the SetHelpKeyword method. To open Help to a specific topic, the keyword should be passed in the form topicName.htm.maintains a collection of references to controls associated with it. To associate a Help file with the , set the
To associate a specific Help string with a control, use the SetHelpString method. The string that you associate with a control using this method is displayed in a pop-up window when the user presses the F1 key while the control has focus.
If the HelpNamespace property has not been set, you must use the SetHelpString method to provide the Help text. If you have set both HelpNamespace and the Help string, Help based on the HelpNamespace will take precedence.
Help class to provide Help functionality.calls methods on the
The following code example demonstrates using the SetHelpString method to set the Help ToolTip text. When you use the context-sensitive Help button and click the Help cursor on an address field, the Help ToolTip appears with the specified text. When you press the F1 key with the focus in an address field, the mspaint.chm Help file is displayed because the HelpNamespace property has been set to mspaint.chm. The SetShowHelp method is called for each address control to identify that it has Help content available.class to display context-sensitive Help on a form containing four address fields. The example uses the
Available since 1.1
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.