'Declaration
 
Protected Overrides Sub OnPropertyChanging( _
   Optional ByVal propertyName As String _
) 

'Usage
 
Dim instance As Button
Dim propertyName As String
 
instance.OnPropertyChanging(propertyName)

protected override void OnPropertyChanging( 
   string propertyName
)

Parameters

propertyName

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

Button Class
Button Members
Base Implementation in OnPropertyChanging