When overridden in a derived class, handles the pressing of the up button on the up-down control.

[Visual Basic]
Overridable Public Function OnNavigateUp() As Boolean 
[C#]
public virtual bool OnNavigateUp();
[C++]
public: virtual bool OnNavigateUp();

Return Value

A value indicating whether the up-down control has been changed.

Remarks

Raising an event invokes the event handler through a delegate. For more information, see Raising an Event.

The OnNavigateUp method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

Notes to Inheritors:  When overriding OnNavigateUp in a derived class, be sure to call the base class's OnNavigateUp method so that registered delegates receive the event.

Requirements

Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows .NET Server family

See Also

UpDownBase Class | UpDownBase Members | Wimark.Controls Namespace