| GrapeCity.Xaml.SpreadSheet.Data Namespace > SheetSpanModel Class : Add Method | 
'Declaration Public Overrides NotOverridable Function Add( _ ByVal row As Integer, _ ByVal column As Integer, _ ByVal rowCount As Integer, _ ByVal columnCount As Integer _ ) As Boolean
true if the span is added successfully; otherwise, false.Target Platforms: Windows Server 2012, Windows RT