Download di un file da pagina web con cambio di nome originale del fil...

 Public Sub DownloadFile(ByVal src As String)

        Dim FilePath As String = src
        Dim TargetFile As New System.IO.FileInfo(FilePath)

        ' clear the current output content from the buffer
        Response.Clear()
        ' add the header that specifies the default filename for the Download/
        ' SaveAs dialog
        Response.AddHeader("Content-Disposition", "attachment; filename=" + _
        TargetFile.Name)
        ' add the header that specifies the file size, so that the browser
        ' can show the download progress
        Response.AddHeader("Content-Length", TargetFile.Length.ToString())
        ' specify that the response is a stream that cannot be read by the
        ' client and must be downloaded
        Response.ContentType = "application/octet-stream"
        ' send the file stream to the client
        Response.WriteFile(TargetFile.FullName)
        ' stop the execution of this page
        Response.End()

    End Sub