OnWorkbookFormatException ( WorkbookFormatException workbookFormatException ) { Debug.Assert(workbookFormatException != null); Range oRangeToSelect = workbookFormatException.RangeToSelect; if (oRangeToSelect != null) { ExcelUtil.SelectRange(oRangeToSelect); } FormUtil.ShowWarning(workbookFormatException.Message); }