How to generate a link to an excel file

See more:

ASP.NET

MS-Excel

C#5.0

I have a mysql database, and I can generate an excel file from it, but I also want to generate a link to that excel file, so that I can connect to it from powerbi. That way I wont give access to the entire database, and just give access to the content in the excel file that will be generated.

What I have tried:

String connString = System.Configuration.ConfigurationManager.ConnectionStrings["web"].ToString();
            using (conn = new MySqlConnection(connString))
            {
                using (MySqlCommand cmd = new MySqlCommand("SELECT * FROM avance_presupuestario where proyecto ='" + proy2.Text + "'"))
                {
                    using (MySqlDataAdapter sda = new MySqlDataAdapter())
                    {
                        cmd.Connection = conn;
                        sda.SelectCommand = cmd;
                        using (DataTable dt = new DataTable())
                        {
                            sda.Fill(dt);
                            using (XLWorkbook wb = new XLWorkbook())
                            {
                                wb.Worksheets.Add(dt, proy2.Text);

                                Response.Clear();
                                Response.Buffer = true;
                                Response.Charset = "";
                                Response.ContentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
                                Response.AddHeader("content-disposition", "attachment;filename=Avance Presupuestario.xlsx");
                                using (MemoryStream MyMemoryStream = new MemoryStream())
                                {
                                    wb.SaveAs(MyMemoryStream);
                                    MyMemoryStream.WriteTo(Response.OutputStream);
                                    Response.Flush();
                                    Response.End();
                                }
                            }
                        }
                    }
                }

            }