'Declaration
 
Protected Overridable Sub OnFirstVisibleDateChanged( _
   ByVal oldValue As Nullable(Of DateOnly), _
   ByVal newValue As Nullable(Of DateOnly) _
) 

'Usage
 
Dim instance As Calendar
Dim oldValue As Nullable(Of DateOnly)
Dim newValue As Nullable(Of DateOnly)
 
instance.OnFirstVisibleDateChanged(oldValue, newValue)

protected virtual void OnFirstVisibleDateChanged( 
   Nullable<DateOnly> oldValue,
   Nullable<DateOnly> newValue
)

Parameters

oldValue

newValue

Target Platforms: Windows 11, Windows 10, 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

Reference

Calendar Class
Calendar Members