null
。
'宣言
Function Copy( _ ByVal row As Integer, _ ByVal column As Integer, _ ByVal toRow As Integer, _ ByVal toColumn As Integer, _ ByVal rowCount As Integer, _ ByVal columnCount As Integer, _ ByVal options As ManipulationOptions, _ Optional ByVal targetWorksheet As IWorksheet _ ) As ActionResult(Of Object)
null
。true
、それ以外の場合はfalse
。