Comments by SALIM MANDREKAR (Top 3 by date)

GridView2.DataSource = dt;
GridView2.DataBind();
DirectoryInfo dir = new DirectoryInfo(@"C:\Reports");
dir.Create();
StringBuilder Excelfile = new StringBuilder("ExcelReport(");
//Excelfile.Append(DateTime.Now.ToString("MMM dd, yyyy "));
Excelfile.Append(DateTime.Now.ToString("MMM dd,HH.mm"));
Excelfile.Append(").xlsx");
FileInfo file = new FileInfo(@"C:\Reports\" + Excelfile);//C:\List Data\
StreamWriter streamWriter = file.CreateText();

StringWriter stringWriter = new StringWriter();
HtmlTextWriter htmlTextWriter = new HtmlTextWriter(stringWriter);
GridView2.RenderControl(htmlTextWriter);
streamWriter.Write(stringWriter.ToString());

htmlTextWriter.Close();
streamWriter.Close();
stringWriter.Close();
Session.Remove("TempCatering");
byte[] Content = File.ReadAllBytes(@"C:\New List Reports\" + file.Name);
Response.ContentType ="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
Response.SetCookie(new HttpCookie("token", Request.Form["token"]));
Response.AddHeader("content-disposition", "attachment; filename=" + file.Name);
Response.BufferOutput = true;
Response.OutputStream.Write(Content, 0, Content.Length);
Response.End();

its not working