EPPlus與Excel完美的結合

筆者近期在公司項目中需要生產比較復雜的Excel報表, 問題點是單個Excel文件中必須能包含多個sheet, 按照以前項目的經驗, 此情況需要使用MS Office組件實現。但是客觀情況是office組件其版本兼容問題比較多(Excel版本不一致導致無法使用、excel進程無法回收、導致w3wp進程崩潰等), 無法把控摒棄之。

在codeplex上看到EPPlus組件, 好像可以解決上述問題。

EPPlus使用的是Open Office XML Format, 其讀寫支持Excel 2003/2007。

項目地址:http://epplus.codeplex.com/

在asp.net頁面上導出Excel代碼如下:

public static void DumpExcel(HttpContext context,string flieName,IDictionary<string,DataTable> dict)
        {
            using (ExcelPackage pck = new ExcelPackage())
            {
                foreach (var kp in dict)
                {
                    //Create the worksheet
                    ExcelWorksheet ws = pck.Workbook.Worksheets.Add(kp.Key);

                    //Load the datatable into the sheet, starting from cell A1. Print the column names on row 1
                    ws.Cells["A1"].LoadFromDataTable(kp.Value, true);

                    ////Format the header for column 1-3
                    //using (ExcelRange rng = ws.Cells["A1:C1"])
                    //{
                    //    rng.Style.Font.Bold = true;
                    //    rng.Style.Fill.PatternType = ExcelFillStyle.Solid;                      //Set Pattern for the background to Solid
                    //    rng.Style.Fill.BackgroundColor.SetColor(Color.FromArgb(79, 129, 189));  //Set color to dark blue
                    //    rng.Style.Font.Color.SetColor(Color.White);
                    //}

                    ////Example how to Format Column 1 as numeric 
                    //using (ExcelRange col = ws.Cells[2, 1, 2 + tbl.Rows.Count, 1])
                    //{
                    //    col.Style.Numberformat.Format = "#,##0.00";
                    //    col.Style.HorizontalAlignment = ExcelHorizontalAlignment.Right;
                    //}

                }
                //Write it back to the client
                var data = pck.GetAsByteArray();
                context.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                context.Response.AddHeader("content-disposition", "attachment;  filename=" + flieName + ".xlsx");
                context.Response.AddHeader("Content-Length", data.Length.ToString());
                context.Response.BinaryWrite(data);
            }
        }

參數dict傳遞的是sheetname和DataTable的鍵值對!