OldValue Property (VisibleChangingEvent)

The previous visibility status of Button.

Syntax

Visual Basic

'Declaration
 
Public ReadOnly Property OldValue As Boolean

C#

public bool OldValue {get;}

Property Value

Returns true if Button had been visible and is being hidden, otherwise it returns false when it was hidden and is now being shown.

Remarks

If any event handler subscribed to the VisibleChanging event decides to cancel the property value change, then the visibility of Button shall continue to have this value following the event.

Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2