令人驚豔的Excel程式庫 - ClosedXML

以下內容為程式語法:
    //ClosedXML

            var wb=new XLWorkbook(src);

            var ws=wb.Worksheets.First();

            ws.Cells("A1").Value=已修改";

            ws.Protect("LetMeEdit");

            wb.SaveAs(@"d:\temp\closedXml.xlsx");

以下內容為程式語法:
   
        /// <summary>
        /// 將目錄下的目錄檔案結構匯出成Excel工作表
        /// </summary>
        /// <param>要匯出的目錄路徑</param>
        /// <param>匯出Excel路徑</param>
        /// <param>過濾函數，傳入Path進行判斷，傳回true時表排除</param>
        /// <returns></returns>
        public static void WebTreeToExcel(
            string dirPath, string excelPath,
            Func<string, bool> filter=null)
        {
            //將目錄結構整理成清單
            List<WebItem> list=new List<WebItem>();
            explore(list, dirPath, 0);
            //建立Excel
            XLWorkbook workbook=new XLWorkbook();
            var sheet=workbook.Worksheets.Add("Site Tree");
            int colIdx=1;
            foreach (string colName in "Path;File;Description".Split(';'))
            {
                sheet.Cell(1, colIdx++).Value=colName;
            }
           //修改標題列Style
            var header=sheet.Range("A1:C1");
            header.Style.Fill.BackgroundColor=XLColor.Green;
            header.Style.Font.FontColor=XLColor.Yellow;
            header.Style.Alignment.Horizontal=XLAlignmentHorizontalValues.Center;
            int rowIdx=2;
            foreach (var item in list)
            {
                //若bypass檢測傳回true，則略過該筆
                if (filter != null && filter(item.Path))
                    continue;
                //將Path放在第一欄(稍後隱藏)
                sheet.Cell(rowIdx, 1).Value=item.Path;
                //存入檔名或目錄名
                sheet.Cell(rowIdx, 2).Value =
                    new String(' ', item.Layer * 4) + item.Name;
                if (item.IsFolder)
                {
                    sheet.Cell(rowIdx, 2).Style.Font.FontColor=XLColor.Blue;
                }
                rowIdx++;
            }
            //第一欄隱藏
            sheet.Column(1).Hide();
            //自動伸縮欄寬
            sheet.Column(2).AdjustToContents();
            sheet.Column(2).Width += 2;
            sheet.Column(3).Width=50;
            //寫入檔案
            workbook.SaveAs(excelPath);
        }