c#如何生成Excel(.xls和.xlsx)文件

在工做中常常遇到須要用c#生成Excel文件(.xls和.xlsx格式),徹底免費開源的ExcelLibrary是一個不錯的選擇。

ExcelLibrary項目的地址爲:

https://code.google.com/p/excellibrary/

ExcelLibrary源碼下載地址:  

https://code.google.com/p/excellibrary/downloads/list

  ExcelLibrary提供了一個基於本地.NET應用程序的解決方案，能夠用來新建，讀取和修改Excel文件而不須要使用COM或者OLEDB。如今已經支持.xls文件格式，.xlsx(Excel 2007)也即將被支持。

ExcelLibrary官方示例代碼:

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//create new xls file string      file =      "C:\\newdoc.xls"     ; Workbook workbook =      new      Workbook(); Worksheet worksheet =      new      Worksheet(     "First Sheet"     ); worksheet.Cells[0, 1] =      new      Cell((     short     )1); worksheet.Cells[2, 0] =      new      Cell(9999999); worksheet.Cells[3, 3] =      new      Cell((     decimal     )3.45); worksheet.Cells[2, 2] =      new      Cell(     "Text string"     ); worksheet.Cells[2, 4] =      new      Cell(     "Second string"     ); worksheet.Cells[4, 0] =      new      Cell(32764.5,      "#,##0.00"     ); worksheet.Cells[5, 1] =      new      Cell(DateTime.Now,      @"YYYY\-MM\-DD"     ); worksheet.Cells.ColumnWidth[0, 1] = 3000; workbook.Worksheets.Add(worksheet); workbook.Save(file); // open xls file Workbook book = Workbook.Load(file); Worksheet sheet = book.Worksheets[0];       // traverse cells       foreach      (Pair<Pair<     int     ,      int     >, Cell> cell      in      sheet.Cells)       {           dgvCells[cell.Left.Right, cell.Left.Left].Value = cell.Right.Value;       }       // traverse rows by Index       for      (     int      rowIndex = sheet.Cells.FirstRowIndex; rowIndex <= sheet.Cells.LastRowIndex; rowIndex++)       {           Row row = sheet.Cells.GetRow(rowIndex);           for      (     int      colIndex = row.FirstColIndex; colIndex <= row.LastColIndex; colIndex++)           {               Cell cell = row.GetCell(colIndex);           }       }

ExcelLibrary示例代碼二(從數據庫中獲取數據而後建立Excel文件):

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//Create the data set and table DataSet ds =      new      DataSet(     "New_DataSet"     ); DataTable dt =      new      DataTable(     "New_DataTable"     ); //Set the locale for each ds.Locale = System.Threading.Thread.CurrentThread.CurrentCulture; dt.Locale = System.Threading.Thread.CurrentThread.CurrentCulture; //Open a DB connection (in this example with OleDB) OleDbConnection con =      new      OleDbConnection(dbConnectionString); con.Open(); //Create a query and fill the data table with the data from the DB string      sql =      "SELECT Whatever FROM MyDBTable;"     ; OleDbCommand cmd =      new      OleDbCommand(sql, con); OleDbDataAdapter adptr =      new      OleDbDataAdapter(); adptr.SelectCommand = cmd; adptr.Fill(dt); con.Close(); //Add the table to the data set ds.Tables.Add(dt); //Here's the easy part. Create the Excel worksheet from the data set ExcelLibrary.DataSetHelper.CreateWorkbook(     "MyExcelFile.xls"     , ds);

另外，還能夠使用EPPlus, EPPlus支持生成Excel 2007/2010 格式的文件(.xlsx) 其主頁爲:

http://epplus.codeplex.com/

EPPlus項目基於LGPL開源協議。

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