MVC 5 Epplus Excel发现不可读的内容
我想写一些信息到Excel文件。 我可以使用EPPlus在其中写入数据。 并下载excel文件。 但是当我运行并下载这个文件并打开时,我看到这个错误。
“Excel在filename.xls中发现了不可读的内容。是否要恢复此工作簿的内容?如果您信任此工作簿的源,请单击”是“。
即使我没有写任何文件,我得到这个错误。 我在Excel类中的代码是:
using MaasRaporlari.Models; using OfficeOpenXml; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Web; namespace MaasRaporlari.Controllers { class AyrintiliHarcamaRapor { public List<AyrintiliHarcamaProgramiVM2> Ayrintili; private static int RaporaEklenebilecekIcerikSayısı = 33; public string ExcelTemplatePath { get; set; } // = HostingEnvironment.MapPath(Url.Content("~/Content/Xsl/")); //@"C:\test\OdemeEmriBelgesi.xlsx"; public string ExcelResultPath { get; set; } // = @"C:\test\OdemeEmriSonuc.xlsx"; public FileStream Save() { try { ExcelTemplatePath = HttpContext.Current.Server.MapPath("~/Images/AyrintiliHarcamaProgrami.xlsx"); ExcelResultPath = HttpContext.Current.Server.MapPath("~/Images/Harcama.xls"); var File = new FileInfo(ExcelTemplatePath); using (ExcelPackage package = new ExcelPackage(File)) { package.Load(new FileStream(ExcelTemplatePath, FileMode.Open)); int sheetCount = (int)Math.Ceiling((double)Ayrintili.Count / RaporaEklenebilecekIcerikSayısı); ExcelWorksheet workSheet = package.Workbook.Worksheets["Sheet1"]; List<ExcelWorksheet> workSheets = new List<ExcelWorksheet>(); workSheets.Add(workSheet); package.Stream.Position = 0; if (sheetCount >= 2) { for (int i = 0; i < sheetCount - 1; i++) { ExcelWorksheet tempSheet = package.Workbook.Worksheets.Add(string.Format("Sheet{0}", i + 2), workSheet); workSheets.Add(tempSheet); } } int icerikSayac = 0; foreach (ExcelWorksheet workSheetItem in workSheets) { package.Stream.Position = 0; decimal MiktarToplam1 = 0; decimal MiktarToplam2 = 0; decimal MiktarToplam3 = 0; decimal MiktarToplam4 = 0; decimal MiktarToplam5 = 0; decimal OranToplam1 = 0; decimal OranToplam2 = 0; decimal OranToplam3 = 0; decimal OranToplam4 = 0; decimal OranToplam5 = 0; MiktarToplam Toplam = new MiktarToplam(); int rowPointer = 10; for (int i = 0; i < RaporaEklenebilecekIcerikSayısı; i++) { if (icerikSayac < Ayrintili.Count) { var item = Ayrintili[icerikSayac]; package.Stream.Position = 0; MiktarToplam5 = item.Miktar1 + item.Miktar2 + item.Miktar3 + item.Miktar4; OranToplam5 = item.Oran1 + item.Oran2 + item.Oran3 + item.Oran4; MiktarToplam1 += item.Miktar1; MiktarToplam2 += item.Miktar2; MiktarToplam3 += item.Miktar3; MiktarToplam4 += item.Miktar4; OranToplam1 += item.Oran1; OranToplam2 += item.Oran2; OranToplam3 += item.Oran3; OranToplam4 += item.Oran4; workSheetItem.Cells["A" + rowPointer.ToString()].Value = item.One; workSheetItem.Cells["B" + rowPointer.ToString()].Value = item.Two; workSheetItem.Cells["C" + rowPointer.ToString()].Value = item.Aciklama; workSheetItem.Cells["D" + rowPointer.ToString()].Value = item.Miktar1; workSheetItem.Cells["F" + rowPointer.ToString()].Value = item.Miktar2; workSheetItem.Cells["H" + rowPointer.ToString()].Value = item.Miktar3; workSheetItem.Cells["J" + rowPointer.ToString()].Value = item.Miktar4; workSheetItem.Cells["E" + rowPointer.ToString()].Value = item.Oran1; workSheetItem.Cells["G" + rowPointer.ToString()].Value = item.Oran2; workSheetItem.Cells["I" + rowPointer.ToString()].Value = item.Oran3; workSheetItem.Cells["K" + rowPointer.ToString()].Value = item.Oran4; workSheetItem.Cells["AC" + rowPointer.ToString()].Value = MiktarToplam5; workSheetItem.Cells["AD" + rowPointer.ToString()].Value = OranToplam5; rowPointer++; icerikSayac++; } } workSheetItem.Cells["D33"].Value = MiktarToplam1; workSheetItem.Cells["E33"].Value = OranToplam1; workSheetItem.Cells["F33"].Value = MiktarToplam2; workSheetItem.Cells["G33"].Value = OranToplam2; workSheetItem.Cells["H33"].Value = MiktarToplam3; workSheetItem.Cells["I33"].Value = OranToplam3; workSheetItem.Cells["J33"].Value = MiktarToplam4; workSheetItem.Cells["K33"].Value = OranToplam4; } using (FileStream outStream = new FileStream(ExcelResultPath, FileMode.OpenOrCreate, FileAccess.ReadWrite)) { package.Stream.Position = 0; package.SaveAs(outStream); outStream.Position = 0; package.Stream.Dispose(); return (outStream); } } } catch (Exception) { throw; } } public class MiktarToplam { public decimal Toplam { get; set; } public MiktarToplam() { Toplam = 0; } } } }
只是几个简单的问题:
是否有必要将该文件放入ExcelPackage构造函数,然后加载它(package.Load)?
为什么你在第34行再次设置package.Stream.Postision = 0,再次在第69行?
我在我的解决scheme(wb是工作簿)中这样做:
var ms = new MemoryStream(); wb.SaveAs(ms); ms.Seek(0, SeekOrigin.Begin);
你试过保存文件,而不是(只是为了确保一切正常)。
Epplus是一个Excel的旧工具。 如果你看一点,你可以看到很多更好的工具。 你应该仔细研究。 另外,你应该看看这些工具的网站。 最后一次提交或更新是什么时候? NPOI和GemBox是最好的工具之一。 祝你好运。