Optional Method called by the framework to allow the property page to validate itself at the very just before saving.
[Visual Basic .NET] Public Function ValidateData ( _ ByVal pTrackCancel As ITrackCancel, _ ByVal vParameters As Object _ ) As IPropertyPage
[C#] public IPropertyPage ValidateData ( ITrackCancel pTrackCancel, object vParameters );
Product Availability
Available with ArcGIS Desktop.