Error when import file excel .xlsx to spread

Error when import file excel .xlsx to spread

Posted by: duchoapnpd on 17 December 2020, 12:34 am EST

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  duchoapnpd

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  Posted 17 December 2020, 12:34 am EST

  Hi,
  
  I have a issue when I import file excel .xlsx to spread. The problem at function sheet.OpenExcel(ms, 0) it can’t Open MemoryStream, also the MemoryStream have data. Please help me. My code like.

  void Import_Click(object sender, EventArgs e){
  
  byte data = Convert.FromBase64String(fileData.Value);
  
  MemoryStream ms = new MemoryStream(data);

              FarPoint.Web.Spread.SheetView sheet = new FarPoint.Web.Spread.SheetView();
              sheet.SheetName = "sheet1";
              sheet.OpenExcel(ms, 0);
  

  …
  
  var a = sheet.Cells[0, 0].Value.ToString(), 0;
  
  // Error in this because sheet not have a value.
  
  }

  this is my function download excel using flag like
  
  void btnExcel_Click(object sender, EventArgs e){
  
  FarPoint.Web.Spread.FpSpread temp = new FarPoint.Web.Spread.FpSpread();
  
  FarPoint.Web.Spread.SheetView sht = new FarPoint.Web.Spread.SheetView();
  
  CopySheet(FpSpread1.ActiveSheetView, sht);
  
  …
  
  var flags = FarPoint.Excel.ExcelSaveFlags.UseOOXMLFormat | FarPoint.Excel.ExcelSaveFlags.SaveCustomColumnHeaders;
  
  var data = ExportExcelData(temp, flags);
  
  …
  
  }

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  duchoapnpd

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  Posted 17 December 2020, 2:24 am EST

  The function OpenExcel can read file Excel 2007 XML format (xlsx)?

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  manish.gupta

  

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  Posted 18 December 2020, 7:08 am EST

  Hi,
  
  The Excel file can be loaded into FarPoint Spread using the following code snippet:

   using (MemoryStream ms = new MemoryStream())
              using (FileStream file = new FileStream(Server.MapPath("~/Files/Reports.xlsx"), FileMode.Open, FileAccess.Read))
              {
                  byte[] bytes = new byte[file.Length];
                  file.Read(bytes, 0, (int)file.Length);
                  ms.Write(bytes, 0, (int)file.Length);
                  ms.Position = 0;
                  FpSpread1.OpenExcel(ms);
              }
  

  Regards,
  
  Manish Gupta