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1、NPOI.dll
2、NPOI.Excel.dll
3、NPOI.OOXML.dll
4、NPOI.OpenXml4Net.dll
5、NPOI.OpenXmlFormats.dll
注:1、文件可上传至本项目路径下的Excel文件夹中再进行读取
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml"> <head runat="server"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title></title> <script src="jquery-2.1.4.min.js"></script> <script type="text/javascript"> $(document).ready(function () { $("#AddPosButton").click(function () { var file = $("#FileUpload1").val(); if (file == "") { alert("请选择要上传的文件"); return false } else { var exec = (/[.]/.exec(file)) ? /[^.]+$/.exec(file.toLowerCase()) : ''; if (exec != "xlsx" || exec != "xls") { alert("文件格式不对,请上传Excel文件!"); return false; } } return true; }); }); </script> </head> <body> <form id="form1" runat="server"> <div> <asp:FileUpload ID="FileUpload1" runat="server" /><asp:Button ID="AddPosButton" runat="server" Text="导入" OnClick="AddPosButton_Click" CssClass="button" /> </div> </form> </body> </html>
/// <summary> /// /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void AddPosButton_Click(object sender, EventArgs e) { //服务器上传临时文件保存路径在主目录下的Upload/tmp文件夹下 string path = Server.MapPath("/Excel/"); DataTable dt = this.ExcelToDataTable(path + this.FileUpload1.FileName, true); if (dt == null && dt.Rows.Count == 0) { return; } return; } /// <summary> /// 将excel导入到datatable /// </summary> /// <param name="filePath">excel路径</param> /// <param name="isColumnName">第一行是否是列名</param> /// <returns>返回datatable</returns> public DataTable ExcelToDataTable(string filePath, bool isColumnName) { DataTable dataTable = null; FileStream fs = null; DataColumn column = null; DataRow dataRow = null; IWorkbook workbook = null; ISheet sheet = null; IRow row = null; ICell cell = null; int startRow = 0; try { using (fs = File.OpenRead(filePath)) { // 2007版本 if (filePath.IndexOf(".xlsx") > 0) workbook = new XSSFWorkbook(fs); // 2003版本 else if (filePath.IndexOf(".xls") > 0) workbook = new HSSFWorkbook(fs); if (workbook != null) { sheet = workbook.GetSheetAt(0);//读取第一个sheet,当然也可以循环读取每个sheet dataTable = new DataTable(); if (sheet != null) { int rowCount = sheet.LastRowNum;//总行数 if (rowCount > 0) { IRow firstRow = sheet.GetRow(0);//第一行 int cellCount = firstRow.LastCellNum;//列数 //构建datatable的列 if (isColumnName) { startRow = 1;//如果第一行是列名,则从第二行开始读取 for (int i = firstRow.FirstCellNum; i < cellCount; ++i) { cell = firstRow.GetCell(i); if (cell != null) { if (cell.StringCellValue != null) { column = new DataColumn(cell.StringCellValue); dataTable.Columns.Add(column); } } } } else { for (int i = firstRow.FirstCellNum; i < cellCount; ++i) { column = new DataColumn("column" + (i + 1)); dataTable.Columns.Add(column); } } //填充行 for (int i = startRow; i <= rowCount; ++i) { row = sheet.GetRow(i); if (row == null) continue; dataRow = dataTable.NewRow(); for (int j = row.FirstCellNum; j < cellCount; ++j) { cell = row.GetCell(j); if (cell == null) { dataRow[j] = ""; } else { //CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,) switch (cell.CellType) { case CellType.Blank: dataRow[j] = ""; break; case CellType.Numeric: short format = cell.CellStyle.DataFormat; //对时间格式(2015.12.5、2015/12/5、2015-12-5等)的处理 if (format == 14 || format == 31 || format == 57 || format == 58) dataRow[j] = cell.DateCellValue; else dataRow[j] = cell.NumericCellValue; break; case CellType.String: dataRow[j] = cell.StringCellValue; break; } } } dataTable.Rows.Add(dataRow); } } } } } return dataTable; } catch (Exception) { if (fs != null) { fs.Close(); } return null; } }
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