Private Sub lbCSVTemplate_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbCSVTemplate.Click
If File.Exists(Server.MapPath("~/CSVUploaded/template.csv")) Then
Response.ContentType = "text/csv"
'Some browsers open the file directly in browser, so this will cause a file "Save as" dialogue to appear.
Response.AppendHeader("Content-Disposition", "attachment; filename=template.csv")
Response.TransmitFile(Server.MapPath("~/CSVUploaded/template.csv"))
Response.End()
Else
lblMsg.Text = MessagesDAL.Instance.Get_MessageByID(Messages.MessageCodes.CSVTemplateNotAvailable)
lblMsg.ForeColor = Drawing.Color.Red
End If
End Sub
Reference:
Downloading a File with a Save As Dialog in ASP.NET
