读取上传的Excel文件而不保存
在这段代码中，我从用户那里获取上传的文件，并将其保存在我的应用程序的一个文件夹中，然后将OleDbConmnection创build为这个Excel文件并读取数据。 我的问题是 – 可以有人build议一种方式，是阅读这个excel文件的首选，但没有保存一次又一次，因为它在我的情况下填充数据与数据
if (Request != null) { HttpPostedFileBase file = Request.Files[0]; if ((file != null) && (file.ContentLength > 0) && !string.IsNullOrEmpty(file.FileName)) { string fileName = file.FileName; string fileContentType = file.ContentType; string fileExtension = System.IO.Path.GetExtension(Request.Files[0].FileName); if (fileExtension == ".xls" || fileExtension == ".xlsx") { string fileLocation = Server.MapPath("~/Content/") + Request.Files[0].FileName; if (System.IO.File.Exists(fileLocation)) { System.IO.File.Delete(fileLocation); } Request.Files[0].SaveAs(fileLocation); string excelConnectionString = string.Empty; excelConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileLocation + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\""; //connection String for xls file format. if (fileExtension == ".xls") { excelConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + fileLocation + ";Extended Properties=\"Excel 8.0;HDR=Yes;IMEX=2\""; } //connection String for xlsx file format. else if (fileExtension == ".xlsx") { excelConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileLocation + ";Extended Properties=\"Excel 12.0;HDR=Yes;IMEX=2\""; } //Create Connection to Excel work book and add oledb namespace OleDbConnection excelConnection = new OleDbConnection(excelConnectionString); excelConnection.Open(); OleDbCommand cmd = new OleDbCommand("SELECT * FROM [Sheet1$]", excelConnection); OleDbDataAdapter objAdapter1 = new OleDbDataAdapter(cmd); DataTable dt = new DataTable(); DataSet ds = new DataSet(); objAdapter1.Fill(ds); DataTable Dt = ds.Tables[0]; 看到这个库。 Excel数据读取器
编辑例子：
if (Request != null) { HttpPostedFileBase file = Request.Files[0]; if ((file != null) && (file.ContentLength > 0) && !string.IsNullOrEmpty(file.FileName)) { string fileName = file.FileName; string fileContentType = file.ContentType; string fileExtension = System.IO.Path.GetExtension(Request.Files[0].FileName); if (fileExtension == ".xls" || fileExtension == ".xlsx") { IExcelDataReader excelReader; if (fileExtension == ".xls") excelReader = ExcelReaderFactory.CreateBinaryReader(stream); else excelReader = ExcelReaderFactory.CreateOpenXmlReader(stream); excelReader.IsFirstRowAsColumnNames = true; DataSet ds = excelReader.AsDataSet(); DataTable Dt = ds.Tables[0];