如何使用Open Office XML在新行中插入单词饼图

Question

如何在Word文档饼图中插入一行。

private static Cell InsertCellInWorksheet(string columnName, uint rowIndex, Worksheet worksheet)
    {
        SheetData sheetData = worksheet.GetFirstChild<SheetData>();
        string cellReference = columnName + rowIndex;
        Row row;
        if (sheetData.Elements<Row>().Where(r => r.RowIndex == rowIndex).Count() != 0)
        {
            row = sheetData.Elements<Row>().Where(r => r.RowIndex == rowIndex).First();
        }
        else
        {
            row = new Row() { RowIndex = rowIndex };
            sheetData.Append(row);
        }

        if (row.Elements<Cell>().Where(c => c.CellReference.Value == columnName + rowIndex).Count() > 0)
        {
            return row.Elements<Cell>().Where(c => c.CellReference.Value == cellReference).First();
        }
        else
        {
            Cell refCell = null;
            foreach (Cell cell in row.Elements<Cell>())
            {
                if (string.Compare(cell.CellReference.Value, cellReference, true) > 0)
                {
                    refCell = cell;
                    break;
                }
            }

            Cell newCell = new Cell() { CellReference = cellReference };
            row.InsertBefore(newCell, refCell);
            worksheet.Save();
            return newCell;
        }
    }

注意：“工作表工作表”是excel文档的属性，因此我无法使用它。如果有可能获得Word文档Piechart Excel。