Downloading Excel file after creating using EPPlus

Question

I am using the EPPlus library to generate an excel file which I successfully save in a folder on the server.

How can download this file to my local machine?

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Answer 1

If you are generating this file on each request you don't need to save it on the server:

public void CreateExcelFirstTemplate()
{
       var fileName = "ExcellData.xlsx";
       using (var package = new OfficeOpenXml.ExcelPackage(fileName))
       {
          var worksheet = package.Workbook.Worksheets.FirstOrDefault(x => x.Name == "Attempts");
          worksheet = package.Workbook.Worksheets.Add("Assessment Attempts");
          worksheet.Row(1).Height = 20;

          worksheet.TabColor = Color.Gold;
          worksheet.DefaultRowHeight = 12;
          worksheet.Row(1).Height = 20;

          worksheet.Cells[1, 1].Value = "Employee Number";
          worksheet.Cells[1, 2].Value = "Course Code";

          var cells = worksheet.Cells["A1:J1"];
          var rowCounter = 2;
          foreach (var v in userAssessmentsData)
          {
            worksheet.Cells[rowCounter, 1].Value = v.CompanyNumber;
            worksheet.Cells[rowCounter, 2].Value = v.CourseCode;

            rowCounter++;
          }
          worksheet.Column(1).AutoFit();
          worksheet.Column(2).AutoFit();


          package.Workbook.Properties.Title = "Attempts";
          this.Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
          this.Response.AddHeader(
                    "content-disposition",
                    string.Format("attachment;  filename={0}", "ExcellData.xlsx"));
          this.Response.BinaryWrite(package.GetAsByteArray());
      }
}