static void SetItemVisibilityFilter(IWorkbook workbook)
        {
            #region #Item Visibility
            Worksheet worksheet = workbook.Worksheets["Report4"];
            workbook.Worksheets.ActiveWorksheet = worksheet;
            PivotTable          pivotTable      = worksheet.PivotTables["PivotTable1"];
            PivotItemCollection pivotFieldItems = pivotTable.Fields[1].Items;
            pivotFieldItems[0].Visible = false;

            #endregion #Item Visibility
        }
        static void SetItemVisibilityFilter(IWorkbook workbook)
        {
            #region #ItemVisibility
            Worksheet worksheet = workbook.Worksheets["Report4"];
            workbook.Worksheets.ActiveWorksheet = worksheet;

            // Access the pivot table by its name in the collection.
            PivotTable pivotTable = worksheet.PivotTables["PivotTable1"];
            // Access items of the "Product" field.
            PivotItemCollection pivotFieldItems = pivotTable.Fields[1].Items;

            // Hide the first item in the "Product" field.
            pivotFieldItems[0].Visible = false;
            #endregion #ItemVisibility
        }